{ "schemaVersion": 1, "checkedAt": "2026-10-17 Asia/Shanghai", "publicReportCopy": { "description": "Public copy of actual local file checks and completed browser observations. Local invocation paths are omitted; original JPEG and ZIP bytes are unchanged.", "noLocalAbsolutePaths": true, "priorOutputSummaryNote": "output-summary.json was generated before browser verification and is not used as proof of pending browser work. Completed browser-native-jpeg-comparison.json is authoritative here." }, "nativeBytesUnmodified": true, "syntheticMetadataOnly": true, "fixtures": { "status": "prepared_inputs_only", "sourceAsset": "willow-direction.png", "sourceAssetSha256": "0e6bc181e3e2996b590e61f1e787fd022eca8a304c9a63758d8aa47a2a951e25", "sourceSize": [ 640, 400 ], "sourceContainedNoMetadata": true, "nativeProductOutputsPresent": false, "fixtures": [ { "file": "metadata-orientation1.jpg", "bytes": 50586, "sha256": "21550a048686793b6379ee881319be96362f607392ffa02d20754e920252fbbe", "format": "JPEG", "encodedPixelSize": [ 640, 400 ], "decodedRgbSha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df", "orientationAppliedSize": [ 640, 400 ], "orientationAppliedRgbSha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df", "ifd0": { "Make": "Doc2X Synthetic QA", "Model": "Not a real camera", "Artist": "Synthetic test fixture", "Orientation": 1 }, "exifIfd": { "DateTimeOriginal": "2001:02:03 04:05:06" }, "gpsIfd": null, "gpsOmittedReason": "No GPS tags are needed to distinguish preserve/remove EXIF behavior. Omitting them keeps the public fixture unambiguously synthetic and avoids introducing location claims.", "sourceIsSyntheticDrawing": true, "allContainerMetadataAuthoredInThisScript": true, "sourcePixelBytesUnchangedBeforeJpegEncoding": true }, { "file": "orientation6.jpg", "bytes": 50586, "sha256": "ece44e8130bc69d45e4e42e4ee7579d43c91c14fb53d8e6c542be96df592b04f", "format": "JPEG", "encodedPixelSize": [ 640, 400 ], "decodedRgbSha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df", "orientationAppliedSize": [ 400, 640 ], "orientationAppliedRgbSha256": "d36e717b24dcadf79c7726c9c7a76bfa6692f19f74414010e415875ce0868a5c", "ifd0": { "Make": "Doc2X Synthetic QA", "Model": "Not a real camera", "Artist": "Synthetic test fixture", "Orientation": 6 }, "exifIfd": { "DateTimeOriginal": "2001:02:03 04:05:06" }, "gpsIfd": null, "gpsOmittedReason": "No GPS tags are needed to distinguish preserve/remove EXIF behavior. Omitting them keeps the public fixture unambiguously synthetic and avoids introducing location claims.", "sourceIsSyntheticDrawing": true, "allContainerMetadataAuthoredInThisScript": true, "sourcePixelBytesUnchangedBeforeJpegEncoding": true } ], "jpegQuality": 95, "jpegSubsampling": 0, "note": "Both fixtures have identical JPEG-encoded image content and differ only in authored EXIF Orientation. The direction6 image is stored640×400 and should display400×640 after a single correct orientation6 transform. These are synthetic test fixtures, not real camera photos." }, "metadataMain": { "schemaVersion": 1, "status": "observed_existing_native_downloads", "checkedAtUtc": "2026-10-17T04:09:56.296874+00:00", "verifier": { "file": "check-outputs.py", "sha256": "21770febcccb110e828cdc1268ee23586a5b00553386ee31d5f3e59ca42ac108" }, "fixtureChoice": "metadata", "fixtureManifest": { "file": "fixture-manifest.json", "sha256": "4a2c30689da502fb63c1cccf0ebce4cd9c37dcaff62325ca42040c44ef6feaf7" }, "sourceProvenance": { "sourceAsset": "willow-direction.png", "sourceAssetSha256": "0e6bc181e3e2996b590e61f1e787fd022eca8a304c9a63758d8aa47a2a951e25", "syntheticDrawing": true, "manifestFixtureSha256": "21550a048686793b6379ee881319be96362f607392ffa02d20754e920252fbbe", "actualFixtureMatchesManifestSha256": true, "knownRawColorQuadrants": { "A": "TL", "B": "TR", "C": "BR", "D": "BL" }, "knownOrientationAppliedColorQuadrants": { "A": "TL", "B": "TR", "C": "BR", "D": "BL" } }, "source": { "file": "metadata-orientation1.jpg", "bytes": 50586, "sha256": "21550a048686793b6379ee881319be96362f607392ffa02d20754e920252fbbe", "format": "JPEG", "sourceMode": "RGB", "encodedPixelSize": [ 640, 400 ], "metadata": { "ifd0": [ { "id": 271, "name": "Make", "value": "Doc2X Synthetic QA" }, { "id": 272, "name": "Model", "value": "Not a real camera" }, { "id": 274, "name": "Orientation", "value": 1 }, { "id": 315, "name": "Artist", "value": "Synthetic test fixture" }, { "id": 34665, "name": "ExifOffset", "value": 136 } ], "exifIFD": [ { "id": 36867, "name": "DateTimeOriginal", "value": "2001:02:03 04:05:06" } ], "gpsIFD": [], "orientation": 1, "decodeWarnings": [], "enumerationScope": "All tags returned by Pillow for IFD0, EXIF IFD, and GPS IFD; not a forensic inventory of every possible private field." }, "jpegHeaderObservation": { "isJpegSignature": true, "headerSegments": [ { "type": "APP0", "payloadBytes": 14 }, { "type": "APP1", "payloadBytes": 180 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "SOF0", "payloadBytes": 15 }, { "type": "DHT", "payloadBytes": 29 }, { "type": "DHT", "payloadBytes": 179 }, { "type": "DHT", "payloadBytes": 29 }, { "type": "DHT", "payloadBytes": 179 }, { "type": "SOS", "payloadBytes": 10 } ], "appSegments": [ { "type": "APP0", "signature": "JFIF", "payloadBytes": 14 }, { "type": "APP1", "signature": "EXIF", "payloadBytes": 180 } ], "xmpPresent": false, "iptcOrPhotoshopApp13Present": false, "parseWarnings": [], "inspectionScope": "JPEG header through the first SOS; signature classification only, not complete XMP/IPTC decoding." }, "pillowInfoObservation": { "xmpKeyPresent": false, "iptcKeyPresent": false, "infoKeys": [ "dpi", "exif", "jfif", "jfif_density", "jfif_unit", "jfif_version" ] }, "rawRgb": { "size": [ 640, 400 ], "sha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df", "colorBlocks": { "imageSize": [ 640, 400 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3735, "matchedAreaRatio": 0.01458984, "significantComponentCount": 1, "components": [ { "pixelCount": 3343, "areaRatio": 0.01305859, "bboxXYXYExclusive": [ 18, 18, 79, 79 ], "centerXY": [ 48.1044, 48.1983 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 392, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3323, "matchedAreaRatio": 0.01298047, "significantComponentCount": 1, "components": [ { "pixelCount": 3163, "areaRatio": 0.01235547, "bboxXYXYExclusive": [ 562, 18, 623, 79 ], "centerXY": [ 592.1951, 48.496 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 160, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3913, "matchedAreaRatio": 0.01528516, "significantComponentCount": 1, "components": [ { "pixelCount": 3427, "areaRatio": 0.01338672, "bboxXYXYExclusive": [ 562, 322, 623, 383 ], "centerXY": [ 592.1806, 352.2521 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 486, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3368, "matchedAreaRatio": 0.01315625, "significantComponentCount": 1, "components": [ { "pixelCount": 3163, "areaRatio": 0.01235547, "bboxXYXYExclusive": [ 18, 322, 79, 383 ], "centerXY": [ 48.1831, 352.5283 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 205, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "orientationAppliedRgb": { "size": [ 640, 400 ], "sha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df", "colorBlocks": { "imageSize": [ 640, 400 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3735, "matchedAreaRatio": 0.01458984, "significantComponentCount": 1, "components": [ { "pixelCount": 3343, "areaRatio": 0.01305859, "bboxXYXYExclusive": [ 18, 18, 79, 79 ], "centerXY": [ 48.1044, 48.1983 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 392, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3323, "matchedAreaRatio": 0.01298047, "significantComponentCount": 1, "components": [ { "pixelCount": 3163, "areaRatio": 0.01235547, "bboxXYXYExclusive": [ 562, 18, 623, 79 ], "centerXY": [ 592.1951, 48.496 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 160, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3913, "matchedAreaRatio": 0.01528516, "significantComponentCount": 1, "components": [ { "pixelCount": 3427, "areaRatio": 0.01338672, "bboxXYXYExclusive": [ 562, 322, 623, 383 ], "centerXY": [ 592.1806, 352.2521 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 486, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3368, "matchedAreaRatio": 0.01315625, "significantComponentCount": 1, "components": [ { "pixelCount": 3163, "areaRatio": 0.01235547, "bboxXYXYExclusive": [ 18, 322, 79, 383 ], "centerXY": [ 48.1831, 352.5283 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 205, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } } }, "outputs": [ { "file": "keep-on-metadata-orientation1.jpg", "bytes": 26335, "sha256": "d392c5fefed02ee5c80d1d9ab731abcf3c3a45c978069ddc4262b1b27baaf4b4", "format": "JPEG", "sourceMode": "RGB", "encodedPixelSize": [ 640, 400 ], "metadata": { "ifd0": [ { "id": 271, "name": "Make", "value": "Doc2X Synthetic QA" }, { "id": 272, "name": "Model", "value": "Not a real camera" }, { "id": 274, "name": "Orientation", "value": 1 }, { "id": 315, "name": "Artist", "value": "Synthetic test fixture" }, { "id": 34665, "name": "ExifOffset", "value": 136 } ], "exifIFD": [ { "id": 36867, "name": "DateTimeOriginal", "value": "2001:02:03 04:05:06" } ], "gpsIFD": [], "orientation": 1, "decodeWarnings": [], "enumerationScope": "All tags returned by Pillow for IFD0, EXIF IFD, and GPS IFD; not a forensic inventory of every possible private field." }, "jpegHeaderObservation": { "isJpegSignature": true, "headerSegments": [ { "type": "APP0", "payloadBytes": 14 }, { "type": "APP1", "payloadBytes": 180 }, { "type": "APP2", "payloadBytes": 470 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "SOF0", "payloadBytes": 15 }, { "type": "DHT", "payloadBytes": 28 }, { "type": "DHT", "payloadBytes": 86 }, { "type": "DHT", "payloadBytes": 26 }, { "type": "DHT", "payloadBytes": 62 }, { "type": "SOS", "payloadBytes": 10 } ], "appSegments": [ { "type": "APP0", "signature": "JFIF", "payloadBytes": 14 }, { "type": "APP1", "signature": "EXIF", "payloadBytes": 180 }, { "type": "APP2", "signature": "ICC_PROFILE", "payloadBytes": 470 } ], "xmpPresent": false, "iptcOrPhotoshopApp13Present": false, "parseWarnings": [], "inspectionScope": "JPEG header through the first SOS; signature classification only, not complete XMP/IPTC decoding." }, "pillowInfoObservation": { "xmpKeyPresent": false, "iptcKeyPresent": false, "infoKeys": [ "dpi", "exif", "icc_profile", "jfif", "jfif_density", "jfif_unit", "jfif_version" ] }, "rawRgb": { "size": [ 640, 400 ], "sha256": "30fd7535247c4d4366d16ef6ddb3d920a988d7c4424db8a3da5d17deb7682616", "colorBlocks": { "imageSize": [ 640, 400 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3657, "matchedAreaRatio": 0.01428516, "significantComponentCount": 1, "components": [ { "pixelCount": 3333, "areaRatio": 0.01301953, "bboxXYXYExclusive": [ 18, 18, 79, 79 ], "centerXY": [ 48.0969, 48.1896 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 324, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3298, "matchedAreaRatio": 0.01288281, "significantComponentCount": 1, "components": [ { "pixelCount": 3153, "areaRatio": 0.01231641, "bboxXYXYExclusive": [ 562, 18, 623, 79 ], "centerXY": [ 592.2211, 48.5084 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 145, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3818, "matchedAreaRatio": 0.01491406, "significantComponentCount": 1, "components": [ { "pixelCount": 3424, "areaRatio": 0.013375, "bboxXYXYExclusive": [ 562, 322, 623, 383 ], "centerXY": [ 592.1758, 352.2442 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 394, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3327, "matchedAreaRatio": 0.01299609, "significantComponentCount": 1, "components": [ { "pixelCount": 3130, "areaRatio": 0.01222656, "bboxXYXYExclusive": [ 18, 322, 79, 383 ], "centerXY": [ 48.2447, 352.5623 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 197, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "orientationAppliedRgb": { "size": [ 640, 400 ], "sha256": "30fd7535247c4d4366d16ef6ddb3d920a988d7c4424db8a3da5d17deb7682616", "colorBlocks": { "imageSize": [ 640, 400 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3657, "matchedAreaRatio": 0.01428516, "significantComponentCount": 1, "components": [ { "pixelCount": 3333, "areaRatio": 0.01301953, "bboxXYXYExclusive": [ 18, 18, 79, 79 ], "centerXY": [ 48.0969, 48.1896 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 324, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3298, "matchedAreaRatio": 0.01288281, "significantComponentCount": 1, "components": [ { "pixelCount": 3153, "areaRatio": 0.01231641, "bboxXYXYExclusive": [ 562, 18, 623, 79 ], "centerXY": [ 592.2211, 48.5084 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 145, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3818, "matchedAreaRatio": 0.01491406, "significantComponentCount": 1, "components": [ { "pixelCount": 3424, "areaRatio": 0.013375, "bboxXYXYExclusive": [ 562, 322, 623, 383 ], "centerXY": [ 592.1758, 352.2442 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 394, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3327, "matchedAreaRatio": 0.01299609, "significantComponentCount": 1, "components": [ { "pixelCount": 3130, "areaRatio": 0.01222656, "bboxXYXYExclusive": [ 18, 322, 79, 383 ], "centerXY": [ 48.2447, 352.5623 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 197, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "label": "keep-on", "metadataComparisonToFixture": { "ifd0": { "sourceTagComparisons": [ { "id": 271, "name": "Make", "sourceValue": "Doc2X Synthetic QA", "outputValue": "Doc2X Synthetic QA", "observation": "preserved", "isIfdPointer": false }, { "id": 272, "name": "Model", "sourceValue": "Not a real camera", "outputValue": "Not a real camera", "observation": "preserved", "isIfdPointer": false }, { "id": 274, "name": "Orientation", "sourceValue": 1, "outputValue": 1, "observation": "preserved", "isIfdPointer": false }, { "id": 315, "name": "Artist", "sourceValue": "Synthetic test fixture", "outputValue": "Synthetic test fixture", "observation": "preserved", "isIfdPointer": false }, { "id": 34665, "name": "ExifOffset", "sourceValue": 136, "outputValue": 136, "observation": "preserved", "isIfdPointer": true } ], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." }, "exifIFD": { "sourceTagComparisons": [ { "id": 36867, "name": "DateTimeOriginal", "sourceValue": "2001:02:03 04:05:06", "outputValue": "2001:02:03 04:05:06", "observation": "preserved", "isIfdPointer": false } ], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." }, "gpsIFD": { "sourceTagComparisons": [], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." } }, "pixelComparisonsToFixture": { "rawToSourceRaw": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.17610938, 0.55442187, 1.5049375 ], "meanAbsoluteErrorAllChannels": 1.07848958, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." }, "rawToSourceDisplay": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.17610938, 0.55442187, 1.5049375 ], "meanAbsoluteErrorAllChannels": 1.07848958, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." }, "displayToSourceRaw": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.17610938, 0.55442187, 1.5049375 ], "meanAbsoluteErrorAllChannels": 1.07848958, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." }, "displayToSourceDisplay": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.17610938, 0.55442187, 1.5049375 ], "meanAbsoluteErrorAllChannels": 1.07848958, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." } } }, { "file": "keep-off-metadata-orientation1.jpg", "bytes": 25868, "sha256": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "format": "JPEG", "sourceMode": "RGB", "encodedPixelSize": [ 640, 400 ], "metadata": { "ifd0": [], "exifIFD": [], "gpsIFD": [], "orientation": null, "decodeWarnings": [], "enumerationScope": "All tags returned by Pillow for IFD0, EXIF IFD, and GPS IFD; not a forensic inventory of every possible private field." }, "jpegHeaderObservation": { "isJpegSignature": true, "headerSegments": [ { "type": "APP0", "payloadBytes": 14 }, { "type": "APP2", "payloadBytes": 470 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "SOF0", "payloadBytes": 15 }, { "type": "DHT", "payloadBytes": 28 }, { "type": "DHT", "payloadBytes": 89 }, { "type": "DHT", "payloadBytes": 26 }, { "type": "DHT", "payloadBytes": 55 }, { "type": "SOS", "payloadBytes": 10 } ], "appSegments": [ { "type": "APP0", "signature": "JFIF", "payloadBytes": 14 }, { "type": "APP2", "signature": "ICC_PROFILE", "payloadBytes": 470 } ], "xmpPresent": false, "iptcOrPhotoshopApp13Present": false, "parseWarnings": [], "inspectionScope": "JPEG header through the first SOS; signature classification only, not complete XMP/IPTC decoding." }, "pillowInfoObservation": { "xmpKeyPresent": false, "iptcKeyPresent": false, "infoKeys": [ "icc_profile", "jfif", "jfif_density", "jfif_unit", "jfif_version" ] }, "rawRgb": { "size": [ 640, 400 ], "sha256": "3cbcc16c8dcb9d91dad4acefc8dbdce3825301b24548a36a4a6a571965cb4a61", "colorBlocks": { "imageSize": [ 640, 400 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3517, "matchedAreaRatio": 0.01373828, "significantComponentCount": 1, "components": [ { "pixelCount": 3324, "areaRatio": 0.01298437, "bboxXYXYExclusive": [ 18, 18, 79, 79 ], "centerXY": [ 48.1101, 48.198 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 193, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3263, "matchedAreaRatio": 0.01274609, "significantComponentCount": 1, "components": [ { "pixelCount": 3136, "areaRatio": 0.01225, "bboxXYXYExclusive": [ 562, 18, 623, 79 ], "centerXY": [ 592.2675, 48.5121 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 127, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3721, "matchedAreaRatio": 0.01453516, "significantComponentCount": 1, "components": [ { "pixelCount": 3410, "areaRatio": 0.01332031, "bboxXYXYExclusive": [ 562, 322, 623, 383 ], "centerXY": [ 592.1792, 352.2642 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 311, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3312, "matchedAreaRatio": 0.0129375, "significantComponentCount": 1, "components": [ { "pixelCount": 3124, "areaRatio": 0.01220313, "bboxXYXYExclusive": [ 18, 322, 79, 383 ], "centerXY": [ 48.2839, 352.6175 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 188, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "orientationAppliedRgb": { "size": [ 640, 400 ], "sha256": "3cbcc16c8dcb9d91dad4acefc8dbdce3825301b24548a36a4a6a571965cb4a61", "colorBlocks": { "imageSize": [ 640, 400 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3517, "matchedAreaRatio": 0.01373828, "significantComponentCount": 1, "components": [ { "pixelCount": 3324, "areaRatio": 0.01298437, "bboxXYXYExclusive": [ 18, 18, 79, 79 ], "centerXY": [ 48.1101, 48.198 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 193, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3263, "matchedAreaRatio": 0.01274609, "significantComponentCount": 1, "components": [ { "pixelCount": 3136, "areaRatio": 0.01225, "bboxXYXYExclusive": [ 562, 18, 623, 79 ], "centerXY": [ 592.2675, 48.5121 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 127, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3721, "matchedAreaRatio": 0.01453516, "significantComponentCount": 1, "components": [ { "pixelCount": 3410, "areaRatio": 0.01332031, "bboxXYXYExclusive": [ 562, 322, 623, 383 ], "centerXY": [ 592.1792, 352.2642 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 311, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3312, "matchedAreaRatio": 0.0129375, "significantComponentCount": 1, "components": [ { "pixelCount": 3124, "areaRatio": 0.01220313, "bboxXYXYExclusive": [ 18, 322, 79, 383 ], "centerXY": [ 48.2839, 352.6175 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 188, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "label": "keep-off", "metadataComparisonToFixture": { "ifd0": { "sourceTagComparisons": [ { "id": 271, "name": "Make", "sourceValue": "Doc2X Synthetic QA", "outputValue": null, "observation": "absent", "isIfdPointer": false }, { "id": 272, "name": "Model", "sourceValue": "Not a real camera", "outputValue": null, "observation": "absent", "isIfdPointer": false }, { "id": 274, "name": "Orientation", "sourceValue": 1, "outputValue": null, "observation": "absent", "isIfdPointer": false }, { "id": 315, "name": "Artist", "sourceValue": "Synthetic test fixture", "outputValue": null, "observation": "absent", "isIfdPointer": false }, { "id": 34665, "name": "ExifOffset", "sourceValue": 136, "outputValue": null, "observation": "absent", "isIfdPointer": true } ], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." }, "exifIFD": { "sourceTagComparisons": [ { "id": 36867, "name": "DateTimeOriginal", "sourceValue": "2001:02:03 04:05:06", "outputValue": null, "observation": "absent", "isIfdPointer": false } ], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." }, "gpsIFD": { "sourceTagComparisons": [], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." } }, "pixelComparisonsToFixture": { "rawToSourceRaw": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.38230859, 0.65333594, 1.79697266 ], "meanAbsoluteErrorAllChannels": 1.27753906, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." }, "rawToSourceDisplay": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.38230859, 0.65333594, 1.79697266 ], "meanAbsoluteErrorAllChannels": 1.27753906, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." }, "displayToSourceRaw": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.38230859, 0.65333594, 1.79697266 ], "meanAbsoluteErrorAllChannels": 1.27753906, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." }, "displayToSourceDisplay": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.38230859, 0.65333594, 1.79697266 ], "meanAbsoluteErrorAllChannels": 1.27753906, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." } } } ], "boundaries": [ "Only the supplied synthetic fixture and explicitly named existing downloads are read; native image bytes are not rewritten.", "Paths are reported as basenames. No OCR or text-direction inference is performed.", "JPEG recompression may change pixels, RGB hashes and file size; these differences do not produce a failure verdict.", "EXIF comparisons describe preserved, absent or changed decoded tags only; no claim is made that all private information has been removed.", "XMP/IPTC/APP observations have the limited scope documented in each record. Missing or multiple color components remain explicitly uncertain.", "This fixture contains no GPS tags, so these results cannot establish GPS-removal behavior." ] }, "orientation6": { "schemaVersion": 1, "status": "observed_existing_native_downloads", "checkedAtUtc": "2026-10-17T04:09:56.547015+00:00", "verifier": { "file": "check-outputs.py", "sha256": "21770febcccb110e828cdc1268ee23586a5b00553386ee31d5f3e59ca42ac108" }, "fixtureChoice": "orientation6", "fixtureManifest": { "file": "fixture-manifest.json", "sha256": "4a2c30689da502fb63c1cccf0ebce4cd9c37dcaff62325ca42040c44ef6feaf7" }, "sourceProvenance": { "sourceAsset": "willow-direction.png", "sourceAssetSha256": "0e6bc181e3e2996b590e61f1e787fd022eca8a304c9a63758d8aa47a2a951e25", "syntheticDrawing": true, "manifestFixtureSha256": "ece44e8130bc69d45e4e42e4ee7579d43c91c14fb53d8e6c542be96df592b04f", "actualFixtureMatchesManifestSha256": true, "knownRawColorQuadrants": { "A": "TL", "B": "TR", "C": "BR", "D": "BL" }, "knownOrientationAppliedColorQuadrants": { "A": "TR", "B": "BR", "C": "BL", "D": "TL" } }, "source": { "file": "orientation6.jpg", "bytes": 50586, "sha256": "ece44e8130bc69d45e4e42e4ee7579d43c91c14fb53d8e6c542be96df592b04f", "format": "JPEG", "sourceMode": "RGB", "encodedPixelSize": [ 640, 400 ], "metadata": { "ifd0": [ { "id": 271, "name": "Make", "value": "Doc2X Synthetic QA" }, { "id": 272, "name": "Model", "value": "Not a real camera" }, { "id": 274, "name": "Orientation", "value": 6 }, { "id": 315, "name": "Artist", "value": "Synthetic test fixture" }, { "id": 34665, "name": "ExifOffset", "value": 136 } ], "exifIFD": [ { "id": 36867, "name": "DateTimeOriginal", "value": "2001:02:03 04:05:06" } ], "gpsIFD": [], "orientation": 6, "decodeWarnings": [], "enumerationScope": "All tags returned by Pillow for IFD0, EXIF IFD, and GPS IFD; not a forensic inventory of every possible private field." }, "jpegHeaderObservation": { "isJpegSignature": true, "headerSegments": [ { "type": "APP0", "payloadBytes": 14 }, { "type": "APP1", "payloadBytes": 180 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "SOF0", "payloadBytes": 15 }, { "type": "DHT", "payloadBytes": 29 }, { "type": "DHT", "payloadBytes": 179 }, { "type": "DHT", "payloadBytes": 29 }, { "type": "DHT", "payloadBytes": 179 }, { "type": "SOS", "payloadBytes": 10 } ], "appSegments": [ { "type": "APP0", "signature": "JFIF", "payloadBytes": 14 }, { "type": "APP1", "signature": "EXIF", "payloadBytes": 180 } ], "xmpPresent": false, "iptcOrPhotoshopApp13Present": false, "parseWarnings": [], "inspectionScope": "JPEG header through the first SOS; signature classification only, not complete XMP/IPTC decoding." }, "pillowInfoObservation": { "xmpKeyPresent": false, "iptcKeyPresent": false, "infoKeys": [ "dpi", "exif", "jfif", "jfif_density", "jfif_unit", "jfif_version" ] }, "rawRgb": { "size": [ 640, 400 ], "sha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df", "colorBlocks": { "imageSize": [ 640, 400 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3735, "matchedAreaRatio": 0.01458984, "significantComponentCount": 1, "components": [ { "pixelCount": 3343, "areaRatio": 0.01305859, "bboxXYXYExclusive": [ 18, 18, 79, 79 ], "centerXY": [ 48.1044, 48.1983 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 392, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3323, "matchedAreaRatio": 0.01298047, "significantComponentCount": 1, "components": [ { "pixelCount": 3163, "areaRatio": 0.01235547, "bboxXYXYExclusive": [ 562, 18, 623, 79 ], "centerXY": [ 592.1951, 48.496 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 160, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3913, "matchedAreaRatio": 0.01528516, "significantComponentCount": 1, "components": [ { "pixelCount": 3427, "areaRatio": 0.01338672, "bboxXYXYExclusive": [ 562, 322, 623, 383 ], "centerXY": [ 592.1806, 352.2521 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 486, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3368, "matchedAreaRatio": 0.01315625, "significantComponentCount": 1, "components": [ { "pixelCount": 3163, "areaRatio": 0.01235547, "bboxXYXYExclusive": [ 18, 322, 79, 383 ], "centerXY": [ 48.1831, 352.5283 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 205, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "orientationAppliedRgb": { "size": [ 400, 640 ], "sha256": "d36e717b24dcadf79c7726c9c7a76bfa6692f19f74414010e415875ce0868a5c", "colorBlocks": { "imageSize": [ 400, 640 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3735, "matchedAreaRatio": 0.01458984, "significantComponentCount": 1, "components": [ { "pixelCount": 3343, "areaRatio": 0.01305859, "bboxXYXYExclusive": [ 321, 18, 382, 79 ], "centerXY": [ 350.8017, 48.1044 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 392, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3323, "matchedAreaRatio": 0.01298047, "significantComponentCount": 1, "components": [ { "pixelCount": 3163, "areaRatio": 0.01235547, "bboxXYXYExclusive": [ 321, 562, 382, 623 ], "centerXY": [ 350.504, 592.1951 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 160, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3913, "matchedAreaRatio": 0.01528516, "significantComponentCount": 1, "components": [ { "pixelCount": 3427, "areaRatio": 0.01338672, "bboxXYXYExclusive": [ 17, 562, 78, 623 ], "centerXY": [ 46.7479, 592.1806 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 486, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3368, "matchedAreaRatio": 0.01315625, "significantComponentCount": 1, "components": [ { "pixelCount": 3163, "areaRatio": 0.01235547, "bboxXYXYExclusive": [ 17, 18, 78, 79 ], "centerXY": [ 46.4717, 48.1831 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 205, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } } }, "outputs": [ { "file": "keep-on-orientation6.jpg", "bytes": 26415, "sha256": "d87a32c0f46692b9051a7f49ac9eb84406d9df31afea58e3cbbdf834d2ddf97b", "format": "JPEG", "sourceMode": "RGB", "encodedPixelSize": [ 400, 640 ], "metadata": { "ifd0": [ { "id": 271, "name": "Make", "value": "Doc2X Synthetic QA" }, { "id": 272, "name": "Model", "value": "Not a real camera" }, { "id": 274, "name": "Orientation", "value": 6 }, { "id": 315, "name": "Artist", "value": "Synthetic test fixture" }, { "id": 34665, "name": "ExifOffset", "value": 136 } ], "exifIFD": [ { "id": 36867, "name": "DateTimeOriginal", "value": "2001:02:03 04:05:06" } ], "gpsIFD": [], "orientation": 6, "decodeWarnings": [], "enumerationScope": "All tags returned by Pillow for IFD0, EXIF IFD, and GPS IFD; not a forensic inventory of every possible private field." }, "jpegHeaderObservation": { "isJpegSignature": true, "headerSegments": [ { "type": "APP0", "payloadBytes": 14 }, { "type": "APP1", "payloadBytes": 180 }, { "type": "APP2", "payloadBytes": 470 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "SOF0", "payloadBytes": 15 }, { "type": "DHT", "payloadBytes": 28 }, { "type": "DHT", "payloadBytes": 84 }, { "type": "DHT", "payloadBytes": 26 }, { "type": "DHT", "payloadBytes": 64 }, { "type": "SOS", "payloadBytes": 10 } ], "appSegments": [ { "type": "APP0", "signature": "JFIF", "payloadBytes": 14 }, { "type": "APP1", "signature": "EXIF", "payloadBytes": 180 }, { "type": "APP2", "signature": "ICC_PROFILE", "payloadBytes": 470 } ], "xmpPresent": false, "iptcOrPhotoshopApp13Present": false, "parseWarnings": [], "inspectionScope": "JPEG header through the first SOS; signature classification only, not complete XMP/IPTC decoding." }, "pillowInfoObservation": { "xmpKeyPresent": false, "iptcKeyPresent": false, "infoKeys": [ "dpi", "exif", "icc_profile", "jfif", "jfif_density", "jfif_unit", "jfif_version" ] }, "rawRgb": { "size": [ 400, 640 ], "sha256": "8c2728add6fca6995e91ab71c14e16e282559c7661ec954240878706e0d91817", "colorBlocks": { "imageSize": [ 400, 640 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3658, "matchedAreaRatio": 0.01428906, "significantComponentCount": 1, "components": [ { "pixelCount": 3334, "areaRatio": 0.01302344, "bboxXYXYExclusive": [ 321, 18, 382, 79 ], "centerXY": [ 350.808, 48.1005 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 324, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3290, "matchedAreaRatio": 0.01285156, "significantComponentCount": 1, "components": [ { "pixelCount": 3145, "areaRatio": 0.01228516, "bboxXYXYExclusive": [ 321, 562, 382, 623 ], "centerXY": [ 350.4871, 592.2458 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 145, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3816, "matchedAreaRatio": 0.01490625, "significantComponentCount": 1, "components": [ { "pixelCount": 3423, "areaRatio": 0.01337109, "bboxXYXYExclusive": [ 17, 562, 78, 623 ], "centerXY": [ 46.7575, 592.1756 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 393, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3326, "matchedAreaRatio": 0.01299219, "significantComponentCount": 1, "components": [ { "pixelCount": 3130, "areaRatio": 0.01222656, "bboxXYXYExclusive": [ 17, 18, 78, 79 ], "centerXY": [ 46.4438, 48.2518 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 196, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "orientationAppliedRgb": { "size": [ 640, 400 ], "sha256": "2e21ce6b5d38dbf2409463589b9a74252ff1a0c212a4f45b7db6dbc4ea3f7c55", "colorBlocks": { "imageSize": [ 640, 400 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3658, "matchedAreaRatio": 0.01428906, "significantComponentCount": 1, "components": [ { "pixelCount": 3334, "areaRatio": 0.01302344, "bboxXYXYExclusive": [ 561, 321, 622, 382 ], "centerXY": [ 590.8995, 350.808 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 324, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3290, "matchedAreaRatio": 0.01285156, "significantComponentCount": 1, "components": [ { "pixelCount": 3145, "areaRatio": 0.01228516, "bboxXYXYExclusive": [ 17, 321, 78, 382 ], "centerXY": [ 46.7542, 350.4871 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 145, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3816, "matchedAreaRatio": 0.01490625, "significantComponentCount": 1, "components": [ { "pixelCount": 3423, "areaRatio": 0.01337109, "bboxXYXYExclusive": [ 17, 17, 78, 78 ], "centerXY": [ 46.8244, 46.7575 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 393, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3326, "matchedAreaRatio": 0.01299219, "significantComponentCount": 1, "components": [ { "pixelCount": 3130, "areaRatio": 0.01222656, "bboxXYXYExclusive": [ 561, 17, 622, 78 ], "centerXY": [ 590.7482, 46.4438 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 196, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "label": "keep-on", "metadataComparisonToFixture": { "ifd0": { "sourceTagComparisons": [ { "id": 271, "name": "Make", "sourceValue": "Doc2X Synthetic QA", "outputValue": "Doc2X Synthetic QA", "observation": "preserved", "isIfdPointer": false }, { "id": 272, "name": "Model", "sourceValue": "Not a real camera", "outputValue": "Not a real camera", "observation": "preserved", "isIfdPointer": false }, { "id": 274, "name": "Orientation", "sourceValue": 6, "outputValue": 6, "observation": "preserved", "isIfdPointer": false }, { "id": 315, "name": "Artist", "sourceValue": "Synthetic test fixture", "outputValue": "Synthetic test fixture", "observation": "preserved", "isIfdPointer": false }, { "id": 34665, "name": "ExifOffset", "sourceValue": 136, "outputValue": 136, "observation": "preserved", "isIfdPointer": true } ], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." }, "exifIFD": { "sourceTagComparisons": [ { "id": 36867, "name": "DateTimeOriginal", "sourceValue": "2001:02:03 04:05:06", "outputValue": "2001:02:03 04:05:06", "observation": "preserved", "isIfdPointer": false } ], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." }, "gpsIFD": { "sourceTagComparisons": [], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." } }, "pixelComparisonsToFixture": { "rawToSourceRaw": { "comparable": false, "reason": "pixel dimensions differ", "outputSize": [ 400, 640 ], "sourceSize": [ 640, 400 ] }, "rawToSourceDisplay": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.19877734, 0.54996484, 1.52467578 ], "meanAbsoluteErrorAllChannels": 1.09113932, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." }, "displayToSourceRaw": { "comparable": true, "meanAbsoluteErrorRGB": [ 19.16473828, 15.24986328, 18.15847266 ], "meanAbsoluteErrorAllChannels": 17.52435807, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." }, "displayToSourceDisplay": { "comparable": false, "reason": "pixel dimensions differ", "outputSize": [ 640, 400 ], "sourceSize": [ 400, 640 ] } } }, { "file": "keep-off-orientation6.jpg", "bytes": 25993, "sha256": "22e7db8bebbf3f82fc1af4ec60053d71921026b576572aeab4a405c0c8c8b548", "format": "JPEG", "sourceMode": "RGB", "encodedPixelSize": [ 400, 640 ], "metadata": { "ifd0": [], "exifIFD": [], "gpsIFD": [], "orientation": null, "decodeWarnings": [], "enumerationScope": "All tags returned by Pillow for IFD0, EXIF IFD, and GPS IFD; not a forensic inventory of every possible private field." }, "jpegHeaderObservation": { "isJpegSignature": true, "headerSegments": [ { "type": "APP0", "payloadBytes": 14 }, { "type": "APP2", "payloadBytes": 470 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "DQT", "payloadBytes": 65 }, { "type": "SOF0", "payloadBytes": 15 }, { "type": "DHT", "payloadBytes": 28 }, { "type": "DHT", "payloadBytes": 87 }, { "type": "DHT", "payloadBytes": 26 }, { "type": "DHT", "payloadBytes": 62 }, { "type": "SOS", "payloadBytes": 10 } ], "appSegments": [ { "type": "APP0", "signature": "JFIF", "payloadBytes": 14 }, { "type": "APP2", "signature": "ICC_PROFILE", "payloadBytes": 470 } ], "xmpPresent": false, "iptcOrPhotoshopApp13Present": false, "parseWarnings": [], "inspectionScope": "JPEG header through the first SOS; signature classification only, not complete XMP/IPTC decoding." }, "pillowInfoObservation": { "xmpKeyPresent": false, "iptcKeyPresent": false, "infoKeys": [ "icc_profile", "jfif", "jfif_density", "jfif_unit", "jfif_version" ] }, "rawRgb": { "size": [ 400, 640 ], "sha256": "c1d04fab3dcf447957010dedb9228269f02103f9cf1beddbffa210b657382713", "colorBlocks": { "imageSize": [ 400, 640 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3514, "matchedAreaRatio": 0.01372656, "significantComponentCount": 1, "components": [ { "pixelCount": 3323, "areaRatio": 0.01298047, "bboxXYXYExclusive": [ 321, 18, 382, 79 ], "centerXY": [ 350.8023, 48.111 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 191, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3262, "matchedAreaRatio": 0.01274219, "significantComponentCount": 1, "components": [ { "pixelCount": 3134, "areaRatio": 0.01224219, "bboxXYXYExclusive": [ 321, 562, 382, 623 ], "centerXY": [ 350.4866, 592.269 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 128, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3727, "matchedAreaRatio": 0.01455859, "significantComponentCount": 1, "components": [ { "pixelCount": 3407, "areaRatio": 0.01330859, "bboxXYXYExclusive": [ 17, 562, 78, 623 ], "centerXY": [ 46.7429, 592.1538 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 320, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3308, "matchedAreaRatio": 0.01292187, "significantComponentCount": 1, "components": [ { "pixelCount": 3120, "areaRatio": 0.0121875, "bboxXYXYExclusive": [ 17, 18, 78, 79 ], "centerXY": [ 46.3881, 48.2913 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 188, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "orientationAppliedRgb": { "size": [ 400, 640 ], "sha256": "c1d04fab3dcf447957010dedb9228269f02103f9cf1beddbffa210b657382713", "colorBlocks": { "imageSize": [ 400, 640 ], "method": "RGB thresholds plus 4-connected components; role names refer to fixture color blocks, not OCR.", "minimumSignificantComponentPixels": 256, "bboxConvention": "left/top inclusive; right/bottom exclusive", "roles": { "A": { "color": "red", "matchedPixelCount": 3514, "matchedAreaRatio": 0.01372656, "significantComponentCount": 1, "components": [ { "pixelCount": 3323, "areaRatio": 0.01298047, "bboxXYXYExclusive": [ 321, 18, 382, 79 ], "centerXY": [ 350.8023, 48.111 ], "quadrant": "TR" } ], "ignoredSmallComponentPixels": 191, "observation": "single colored component located" }, "B": { "color": "green", "matchedPixelCount": 3262, "matchedAreaRatio": 0.01274219, "significantComponentCount": 1, "components": [ { "pixelCount": 3134, "areaRatio": 0.01224219, "bboxXYXYExclusive": [ 321, 562, 382, 623 ], "centerXY": [ 350.4866, 592.269 ], "quadrant": "BR" } ], "ignoredSmallComponentPixels": 128, "observation": "single colored component located" }, "C": { "color": "blue", "matchedPixelCount": 3727, "matchedAreaRatio": 0.01455859, "significantComponentCount": 1, "components": [ { "pixelCount": 3407, "areaRatio": 0.01330859, "bboxXYXYExclusive": [ 17, 562, 78, 623 ], "centerXY": [ 46.7429, 592.1538 ], "quadrant": "BL" } ], "ignoredSmallComponentPixels": 320, "observation": "single colored component located" }, "D": { "color": "purple", "matchedPixelCount": 3308, "matchedAreaRatio": 0.01292187, "significantComponentCount": 1, "components": [ { "pixelCount": 3120, "areaRatio": 0.0121875, "bboxXYXYExclusive": [ 17, 18, 78, 79 ], "centerXY": [ 46.3881, 48.2913 ], "quadrant": "TL" } ], "ignoredSmallComponentPixels": 188, "observation": "single colored component located" } }, "allFourSingleComponentsObserved": true, "uncertainty": "Any missing or multiple component makes role localization uncertain; cropping, resizing and recompression may affect thresholds and area ratios." } }, "label": "keep-off", "metadataComparisonToFixture": { "ifd0": { "sourceTagComparisons": [ { "id": 271, "name": "Make", "sourceValue": "Doc2X Synthetic QA", "outputValue": null, "observation": "absent", "isIfdPointer": false }, { "id": 272, "name": "Model", "sourceValue": "Not a real camera", "outputValue": null, "observation": "absent", "isIfdPointer": false }, { "id": 274, "name": "Orientation", "sourceValue": 6, "outputValue": null, "observation": "absent", "isIfdPointer": false }, { "id": 315, "name": "Artist", "sourceValue": "Synthetic test fixture", "outputValue": null, "observation": "absent", "isIfdPointer": false }, { "id": 34665, "name": "ExifOffset", "sourceValue": 136, "outputValue": null, "observation": "absent", "isIfdPointer": true } ], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." }, "exifIFD": { "sourceTagComparisons": [ { "id": 36867, "name": "DateTimeOriginal", "sourceValue": "2001:02:03 04:05:06", "outputValue": null, "observation": "absent", "isIfdPointer": false } ], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." }, "gpsIFD": { "sourceTagComparisons": [], "additionalOutputTags": [], "note": "IFD pointer values are offsets, not authored personal data. Absence is limited to these decoded tags." } }, "pixelComparisonsToFixture": { "rawToSourceRaw": { "comparable": false, "reason": "pixel dimensions differ", "outputSize": [ 400, 640 ], "sourceSize": [ 640, 400 ] }, "rawToSourceDisplay": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.41964453, 0.65686328, 1.80281641 ], "meanAbsoluteErrorAllChannels": 1.29310807, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." }, "displayToSourceRaw": { "comparable": false, "reason": "pixel dimensions differ", "outputSize": [ 400, 640 ], "sourceSize": [ 640, 400 ] }, "displayToSourceDisplay": { "comparable": true, "meanAbsoluteErrorRGB": [ 1.41964453, 0.65686328, 1.80281641 ], "meanAbsoluteErrorAllChannels": 1.29310807, "sameRgbBytes": false, "interpretation": "A nonzero difference may follow JPEG recompression and is not a failure verdict." } } } ], "boundaries": [ "Only the supplied synthetic fixture and explicitly named existing downloads are read; native image bytes are not rewritten.", "Paths are reported as basenames. No OCR or text-direction inference is performed.", "JPEG recompression may change pixels, RGB hashes and file size; these differences do not produce a failure verdict.", "EXIF comparisons describe preserved, absent or changed decoded tags only; no claim is made that all private information has been removed.", "XMP/IPTC/APP observations have the limited scope documented in each record. Missing or multiple color components remain explicitly uncertain.", "This fixture contains no GPS tags, so these results cannot establish GPS-removal behavior." ] }, "independent73": { "checkCount": 73, "passed": 73, "failed": 0 }, "independent": { "checker": "independent-jpeg-check.py", "status": "pass", "independence": "Does not import or execute check-outputs.py. Standard-library JPEG marker and TIFF/EXIF parser; Pillow pixel decoding, 8x8 patch medians and ImageOps.exif_transpose.", "cornerOrder": [ "topLeft", "topRight", "bottomLeft", "bottomRight" ], "syntheticMetadata": "Device, author, time and Orientation values were explicitly authored for these fixtures; no real camera or personal location data is represented.", "metadataScope": "Keep-off outputs omit EXIF APP1 but retain ICC APP2 and JFIF APP0. This is not an all-metadata removal claim. Inputs contain no GPS, XMP or IPTC, so their removal is untested.", "orientationFinding": "The keep-on orientation6 output is encoded 400x640 with D/A/C/B corners and retains Orientation=6; applying the retained tag again yields 640x400 with C/D/B/A corners. The keep-off counterpart has no EXIF orientation and displays D/A/C/B.", "checkCount": 73, "passed": 73, "failed": 0, "files": [ { "file": "metadata-orientation1.jpg", "bytes": 50586, "sha256": "21550a048686793b6379ee881319be96362f607392ffa02d20754e920252fbbe", "appSegments": [ { "marker": "APP0", "offset": 2, "payloadBytes": 14, "signature": "JFIF\\0" }, { "marker": "APP1", "offset": 20, "payloadBytes": 180, "signature": "Exif\\0\\0" } ], "exif": { "ifd0": { "Make": "Doc2X Synthetic QA", "Model": "Not a real camera", "Orientation": 1, "Artist": "Synthetic test fixture", "ExifIFDPointer": 136 }, "exifIfd": { "DateTimeOriginal": "2001:02:03 04:05:06" }, "gpsIfd": {} }, "iccApp2Chunks": 0, "encodedPixels": { "size": [ 640, 400 ], "cornersTL_TR_BL_BR": [ "A", "B", "D", "C" ], "patchMedianRgbTL_TR_BL_BR": [ [ 214, 63, 68 ], [ 20, 142, 105 ], [ 139, 69, 183 ], [ 32, 117, 198 ] ], "decodedRgbSha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df" }, "exifAppliedPixels": { "size": [ 640, 400 ], "cornersTL_TR_BL_BR": [ "A", "B", "D", "C" ], "patchMedianRgbTL_TR_BL_BR": [ [ 214, 63, 68 ], [ 20, 142, 105 ], [ 139, 69, 183 ], [ 32, 117, 198 ] ], "decodedRgbSha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df" } }, { "file": "orientation6.jpg", "bytes": 50586, "sha256": "ece44e8130bc69d45e4e42e4ee7579d43c91c14fb53d8e6c542be96df592b04f", "appSegments": [ { "marker": "APP0", "offset": 2, "payloadBytes": 14, "signature": "JFIF\\0" }, { "marker": "APP1", "offset": 20, "payloadBytes": 180, "signature": "Exif\\0\\0" } ], "exif": { "ifd0": { "Make": "Doc2X Synthetic QA", "Model": "Not a real camera", "Orientation": 6, "Artist": "Synthetic test fixture", "ExifIFDPointer": 136 }, "exifIfd": { "DateTimeOriginal": "2001:02:03 04:05:06" }, "gpsIfd": {} }, "iccApp2Chunks": 0, "encodedPixels": { "size": [ 640, 400 ], "cornersTL_TR_BL_BR": [ "A", "B", "D", "C" ], "patchMedianRgbTL_TR_BL_BR": [ [ 214, 63, 68 ], [ 20, 142, 105 ], [ 139, 69, 183 ], [ 32, 117, 198 ] ], "decodedRgbSha256": "088c17e77410e1c2652b1859a66a264e18a05ad6c1f34a521acc652226c7e9df" }, "exifAppliedPixels": { "size": [ 400, 640 ], "cornersTL_TR_BL_BR": [ "D", "A", "C", "B" ], "patchMedianRgbTL_TR_BL_BR": [ [ 139, 69, 183 ], [ 214, 63, 68 ], [ 32, 117, 198 ], [ 20, 142, 105 ] ], "decodedRgbSha256": "d36e717b24dcadf79c7726c9c7a76bfa6692f19f74414010e415875ce0868a5c" } }, { "file": "keep-on-metadata-orientation1.jpg", "bytes": 26335, "sha256": "d392c5fefed02ee5c80d1d9ab731abcf3c3a45c978069ddc4262b1b27baaf4b4", "appSegments": [ { "marker": "APP0", "offset": 2, "payloadBytes": 14, "signature": "JFIF\\0" }, { "marker": "APP1", "offset": 20, "payloadBytes": 180, "signature": "Exif\\0\\0" }, { "marker": "APP2", "offset": 204, "payloadBytes": 470, "signature": "ICC_PROFILE\\0" } ], "exif": { "ifd0": { "Make": "Doc2X Synthetic QA", "Model": "Not a real camera", "Orientation": 1, "Artist": "Synthetic test fixture", "ExifIFDPointer": 136 }, "exifIfd": { "DateTimeOriginal": "2001:02:03 04:05:06" }, "gpsIfd": {} }, "iccApp2Chunks": 1, "encodedPixels": { "size": [ 640, 400 ], "cornersTL_TR_BL_BR": [ "A", "B", "D", "C" ], "patchMedianRgbTL_TR_BL_BR": [ [ 214, 63, 68 ], [ 20, 142, 104 ], [ 139, 68, 185 ], [ 32, 117, 199 ] ], "decodedRgbSha256": "30fd7535247c4d4366d16ef6ddb3d920a988d7c4424db8a3da5d17deb7682616" }, "exifAppliedPixels": { "size": [ 640, 400 ], "cornersTL_TR_BL_BR": [ "A", "B", "D", "C" ], "patchMedianRgbTL_TR_BL_BR": [ [ 214, 63, 68 ], [ 20, 142, 104 ], [ 139, 68, 185 ], [ 32, 117, 199 ] ], "decodedRgbSha256": "30fd7535247c4d4366d16ef6ddb3d920a988d7c4424db8a3da5d17deb7682616" } }, { "file": "keep-off-metadata-orientation1.jpg", "bytes": 25868, "sha256": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "appSegments": [ { "marker": "APP0", "offset": 2, "payloadBytes": 14, "signature": "JFIF\\0" }, { "marker": "APP2", "offset": 20, "payloadBytes": 470, "signature": "ICC_PROFILE\\0" } ], "exif": { "ifd0": {}, "exifIfd": {}, "gpsIfd": {} }, "iccApp2Chunks": 1, "encodedPixels": { "size": [ 640, 400 ], "cornersTL_TR_BL_BR": [ "A", "B", "D", "C" ], "patchMedianRgbTL_TR_BL_BR": [ [ 214, 63, 70 ], [ 20, 142, 104 ], [ 139, 69, 185 ], [ 32, 117, 200 ] ], "decodedRgbSha256": "3cbcc16c8dcb9d91dad4acefc8dbdce3825301b24548a36a4a6a571965cb4a61" }, "exifAppliedPixels": { "size": [ 640, 400 ], "cornersTL_TR_BL_BR": [ "A", "B", "D", "C" ], "patchMedianRgbTL_TR_BL_BR": [ [ 214, 63, 70 ], [ 20, 142, 104 ], [ 139, 69, 185 ], [ 32, 117, 200 ] ], "decodedRgbSha256": "3cbcc16c8dcb9d91dad4acefc8dbdce3825301b24548a36a4a6a571965cb4a61" } }, { "file": "keep-on-orientation6.jpg", "bytes": 26415, "sha256": "d87a32c0f46692b9051a7f49ac9eb84406d9df31afea58e3cbbdf834d2ddf97b", "appSegments": [ { "marker": "APP0", "offset": 2, "payloadBytes": 14, "signature": "JFIF\\0" }, { "marker": "APP1", "offset": 20, "payloadBytes": 180, "signature": "Exif\\0\\0" }, { "marker": "APP2", "offset": 204, "payloadBytes": 470, "signature": "ICC_PROFILE\\0" } ], "exif": { "ifd0": { "Make": "Doc2X Synthetic QA", "Model": "Not a real camera", "Orientation": 6, "Artist": "Synthetic test fixture", "ExifIFDPointer": 136 }, "exifIfd": { "DateTimeOriginal": "2001:02:03 04:05:06" }, "gpsIfd": {} }, "iccApp2Chunks": 1, "encodedPixels": { "size": [ 400, 640 ], "cornersTL_TR_BL_BR": [ "D", "A", "C", "B" ], "patchMedianRgbTL_TR_BL_BR": [ [ 139, 68, 185 ], [ 215, 63, 68 ], [ 32, 117, 199 ], [ 18, 142, 105 ] ], "decodedRgbSha256": "8c2728add6fca6995e91ab71c14e16e282559c7661ec954240878706e0d91817" }, "exifAppliedPixels": { "size": [ 640, 400 ], "cornersTL_TR_BL_BR": [ "C", "D", "B", "A" ], "patchMedianRgbTL_TR_BL_BR": [ [ 32, 117, 199 ], [ 139, 68, 185 ], [ 18, 142, 105 ], [ 215, 63, 68 ] ], "decodedRgbSha256": "2e21ce6b5d38dbf2409463589b9a74252ff1a0c212a4f45b7db6dbc4ea3f7c55" } }, { "file": "keep-off-orientation6.jpg", "bytes": 25993, "sha256": "22e7db8bebbf3f82fc1af4ec60053d71921026b576572aeab4a405c0c8c8b548", "appSegments": [ { "marker": "APP0", "offset": 2, "payloadBytes": 14, "signature": "JFIF\\0" }, { "marker": "APP2", "offset": 20, "payloadBytes": 470, "signature": "ICC_PROFILE\\0" } ], "exif": { "ifd0": {}, "exifIfd": {}, "gpsIfd": {} }, "iccApp2Chunks": 1, "encodedPixels": { "size": [ 400, 640 ], "cornersTL_TR_BL_BR": [ "D", "A", "C", "B" ], "patchMedianRgbTL_TR_BL_BR": [ [ 139, 69, 185 ], [ 214, 63, 69 ], [ 31, 117, 200 ], [ 18, 142, 105 ] ], "decodedRgbSha256": "c1d04fab3dcf447957010dedb9228269f02103f9cf1beddbffa210b657382713" }, "exifAppliedPixels": { "size": [ 400, 640 ], "cornersTL_TR_BL_BR": [ "D", "A", "C", "B" ], "patchMedianRgbTL_TR_BL_BR": [ [ 139, 69, 185 ], [ 214, 63, 69 ], [ 31, 117, 200 ], [ 18, 142, 105 ] ], "decodedRgbSha256": "c1d04fab3dcf447957010dedb9228269f02103f9cf1beddbffa210b657382713" } } ], "archives": [ { "file": "keep-on-native.zip", "sha256": "d77ea36b3a718cea9c11b71ebe0beead9fefa0d0b0a07090f44144aa68e39525", "members": [ { "member": "metadata-orientation1.jpg", "independentJpeg": "keep-on-metadata-orientation1.jpg", "bytes": 26335, "sha256": "d392c5fefed02ee5c80d1d9ab731abcf3c3a45c978069ddc4262b1b27baaf4b4", "exactBytesMatch": true }, { "member": "orientation6.jpg", "independentJpeg": "keep-on-orientation6.jpg", "bytes": 26415, "sha256": "d87a32c0f46692b9051a7f49ac9eb84406d9df31afea58e3cbbdf834d2ddf97b", "exactBytesMatch": true } ] }, { "file": "keep-off-native.zip", "sha256": "9c9cfb48e6ad5dce6526904ac6f2dcc4f4cdaa5a53fa6f589d724797ad608f62", "members": [ { "member": "metadata-orientation1.jpg", "independentJpeg": "keep-off-metadata-orientation1.jpg", "bytes": 25868, "sha256": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "exactBytesMatch": true }, { "member": "orientation6.jpg", "independentJpeg": "keep-off-orientation6.jpg", "bytes": 25993, "sha256": "22e7db8bebbf3f82fc1af4ec60053d71921026b576572aeab4a405c0c8c8b548", "exactBytesMatch": true } ] } ], "jpegReencodingObservations": [ { "output": "keep-on-metadata-orientation1.jpg", "reference": "metadata-orientation1.jpg", "referenceTransform": "none", "decodedRgbHashEqual": false, "meanAbsoluteDifferenceRgb": [ 1.176109375, 0.554421875, 1.5049375 ], "maxAbsoluteDifferenceRgb": [ 83, 37, 94 ], "interpretation": "Observed JPEG re-encoding difference; hash inequality and nonzero pixel error do not fail this check." }, { "output": "keep-off-metadata-orientation1.jpg", "reference": "metadata-orientation1.jpg", "referenceTransform": "none", "decodedRgbHashEqual": false, "meanAbsoluteDifferenceRgb": [ 1.38230859375, 0.6533359375, 1.79697265625 ], "maxAbsoluteDifferenceRgb": [ 91, 42, 98 ], "interpretation": "Observed JPEG re-encoding difference; hash inequality and nonzero pixel error do not fail this check." }, { "output": "keep-on-orientation6.jpg", "reference": "orientation6.jpg", "referenceTransform": "clockwise90", "decodedRgbHashEqual": false, "meanAbsoluteDifferenceRgb": [ 1.19877734375, 0.54996484375, 1.52467578125 ], "maxAbsoluteDifferenceRgb": [ 82, 36, 90 ], "interpretation": "Observed JPEG re-encoding difference; hash inequality and nonzero pixel error do not fail this check." }, { "output": "keep-off-orientation6.jpg", "reference": "orientation6.jpg", "referenceTransform": "clockwise90", "decodedRgbHashEqual": false, "meanAbsoluteDifferenceRgb": [ 1.41964453125, 0.65686328125, 1.80281640625 ], "maxAbsoluteDifferenceRgb": [ 92, 41, 94 ], "interpretation": "Observed JPEG re-encoding difference; hash inequality and nonzero pixel error do not fail this check." } ], "checks": [ { "check": "metadata-orientation1.jpg:EXIF_APP1_count", "actual": 1, "expected": 1, "pass": true }, { "check": "metadata-orientation1.jpg:ICC_APP2_present", "actual": false, "expected": false, "pass": true }, { "check": "metadata-orientation1.jpg:Orientation", "actual": 1, "expected": 1, "pass": true }, { "check": "metadata-orientation1.jpg:GPS_absent", "actual": {}, "expected": {}, "pass": true }, { "check": "metadata-orientation1.jpg:synthetic_Make", "actual": "Doc2X Synthetic QA", "expected": "Doc2X Synthetic QA", "pass": true }, { "check": "metadata-orientation1.jpg:synthetic_Model", "actual": "Not a real camera", "expected": "Not a real camera", "pass": true }, { "check": "metadata-orientation1.jpg:synthetic_Artist", "actual": "Synthetic test fixture", "expected": "Synthetic test fixture", "pass": true }, { "check": "metadata-orientation1.jpg:synthetic_DateTimeOriginal", "actual": "2001:02:03 04:05:06", "expected": "2001:02:03 04:05:06", "pass": true }, { "check": "metadata-orientation1.jpg:encoded_size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "pass": true }, { "check": "metadata-orientation1.jpg:EXIF_applied_size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "pass": true }, { "check": "metadata-orientation1.jpg:encoded_corners", "actual": [ "A", "B", "D", "C" ], "expected": [ "A", "B", "D", "C" ], "pass": true }, { "check": "metadata-orientation1.jpg:EXIF_applied_corners", "actual": [ "A", "B", "D", "C" ], "expected": [ "A", "B", "D", "C" ], "pass": true }, { "check": "orientation6.jpg:EXIF_APP1_count", "actual": 1, "expected": 1, "pass": true }, { "check": "orientation6.jpg:ICC_APP2_present", "actual": false, "expected": false, "pass": true }, { "check": "orientation6.jpg:Orientation", "actual": 6, "expected": 6, "pass": true }, { "check": "orientation6.jpg:GPS_absent", "actual": {}, "expected": {}, "pass": true }, { "check": "orientation6.jpg:synthetic_Make", "actual": "Doc2X Synthetic QA", "expected": "Doc2X Synthetic QA", "pass": true }, { "check": "orientation6.jpg:synthetic_Model", "actual": "Not a real camera", "expected": "Not a real camera", "pass": true }, { "check": "orientation6.jpg:synthetic_Artist", "actual": "Synthetic test fixture", "expected": "Synthetic test fixture", "pass": true }, { "check": "orientation6.jpg:synthetic_DateTimeOriginal", "actual": "2001:02:03 04:05:06", "expected": "2001:02:03 04:05:06", "pass": true }, { "check": "orientation6.jpg:encoded_size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "pass": true }, { "check": "orientation6.jpg:EXIF_applied_size", "actual": [ 400, 640 ], "expected": [ 400, 640 ], "pass": true }, { "check": "orientation6.jpg:encoded_corners", "actual": [ "A", "B", "D", "C" ], "expected": [ "A", "B", "D", "C" ], "pass": true }, { "check": "orientation6.jpg:EXIF_applied_corners", "actual": [ "D", "A", "C", "B" ], "expected": [ "D", "A", "C", "B" ], "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:EXIF_APP1_count", "actual": 1, "expected": 1, "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:ICC_APP2_present", "actual": true, "expected": true, "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:Orientation", "actual": 1, "expected": 1, "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:GPS_absent", "actual": {}, "expected": {}, "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:synthetic_Make", "actual": "Doc2X Synthetic QA", "expected": "Doc2X Synthetic QA", "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:synthetic_Model", "actual": "Not a real camera", "expected": "Not a real camera", "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:synthetic_Artist", "actual": "Synthetic test fixture", "expected": "Synthetic test fixture", "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:synthetic_DateTimeOriginal", "actual": "2001:02:03 04:05:06", "expected": "2001:02:03 04:05:06", "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:encoded_size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:EXIF_applied_size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:encoded_corners", "actual": [ "A", "B", "D", "C" ], "expected": [ "A", "B", "D", "C" ], "pass": true }, { "check": "keep-on-metadata-orientation1.jpg:EXIF_applied_corners", "actual": [ "A", "B", "D", "C" ], "expected": [ "A", "B", "D", "C" ], "pass": true }, { "check": "keep-off-metadata-orientation1.jpg:EXIF_APP1_count", "actual": 0, "expected": 0, "pass": true }, { "check": "keep-off-metadata-orientation1.jpg:ICC_APP2_present", "actual": true, "expected": true, "pass": true }, { "check": "keep-off-metadata-orientation1.jpg:Orientation", "actual": null, "expected": null, "pass": true }, { "check": "keep-off-metadata-orientation1.jpg:GPS_absent", "actual": {}, "expected": {}, "pass": true }, { "check": "keep-off-metadata-orientation1.jpg:encoded_size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "pass": true }, { "check": "keep-off-metadata-orientation1.jpg:EXIF_applied_size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "pass": true }, { "check": "keep-off-metadata-orientation1.jpg:encoded_corners", "actual": [ "A", "B", "D", "C" ], "expected": [ "A", "B", "D", "C" ], "pass": true }, { "check": "keep-off-metadata-orientation1.jpg:EXIF_applied_corners", "actual": [ "A", "B", "D", "C" ], "expected": [ "A", "B", "D", "C" ], "pass": true }, { "check": "keep-on-orientation6.jpg:EXIF_APP1_count", "actual": 1, "expected": 1, "pass": true }, { "check": "keep-on-orientation6.jpg:ICC_APP2_present", "actual": true, "expected": true, "pass": true }, { "check": "keep-on-orientation6.jpg:Orientation", "actual": 6, "expected": 6, "pass": true }, { "check": "keep-on-orientation6.jpg:GPS_absent", "actual": {}, "expected": {}, "pass": true }, { "check": "keep-on-orientation6.jpg:synthetic_Make", "actual": "Doc2X Synthetic QA", "expected": "Doc2X Synthetic QA", "pass": true }, { "check": "keep-on-orientation6.jpg:synthetic_Model", "actual": "Not a real camera", "expected": "Not a real camera", "pass": true }, { "check": "keep-on-orientation6.jpg:synthetic_Artist", "actual": "Synthetic test fixture", "expected": "Synthetic test fixture", "pass": true }, { "check": "keep-on-orientation6.jpg:synthetic_DateTimeOriginal", "actual": "2001:02:03 04:05:06", "expected": "2001:02:03 04:05:06", "pass": true }, { "check": "keep-on-orientation6.jpg:encoded_size", "actual": [ 400, 640 ], "expected": [ 400, 640 ], "pass": true }, { "check": "keep-on-orientation6.jpg:EXIF_applied_size", "actual": [ 640, 400 ], "expected": [ 640, 400 ], "pass": true }, { "check": "keep-on-orientation6.jpg:encoded_corners", "actual": [ "D", "A", "C", "B" ], "expected": [ "D", "A", "C", "B" ], "pass": true }, { "check": "keep-on-orientation6.jpg:EXIF_applied_corners", "actual": [ "C", "D", "B", "A" ], "expected": [ "C", "D", "B", "A" ], "pass": true }, { "check": "keep-off-orientation6.jpg:EXIF_APP1_count", "actual": 0, "expected": 0, "pass": true }, { "check": "keep-off-orientation6.jpg:ICC_APP2_present", "actual": true, "expected": true, "pass": true }, { "check": "keep-off-orientation6.jpg:Orientation", "actual": null, "expected": null, "pass": true }, { "check": "keep-off-orientation6.jpg:GPS_absent", "actual": {}, "expected": {}, "pass": true }, { "check": "keep-off-orientation6.jpg:encoded_size", "actual": [ 400, 640 ], "expected": [ 400, 640 ], "pass": true }, { "check": "keep-off-orientation6.jpg:EXIF_applied_size", "actual": [ 400, 640 ], "expected": [ 400, 640 ], "pass": true }, { "check": "keep-off-orientation6.jpg:encoded_corners", "actual": [ "D", "A", "C", "B" ], "expected": [ "D", "A", "C", "B" ], "pass": true }, { "check": "keep-off-orientation6.jpg:EXIF_applied_corners", "actual": [ "D", "A", "C", "B" ], "expected": [ "D", "A", "C", "B" ], "pass": true }, { "check": "keep-on-native.zip:members", "actual": [ "metadata-orientation1.jpg", "orientation6.jpg" ], "expected": [ "metadata-orientation1.jpg", "orientation6.jpg" ], "pass": true }, { "check": "keep-on-native.zip:CRC", "actual": null, "expected": null, "pass": true }, { "check": "keep-on-native.zip:exact_bytes:metadata-orientation1.jpg", "actual": true, "expected": true, "pass": true }, { "check": "keep-on-native.zip:exact_bytes:orientation6.jpg", "actual": true, "expected": true, "pass": true }, { "check": "keep-off-native.zip:members", "actual": [ "metadata-orientation1.jpg", "orientation6.jpg" ], "expected": [ "metadata-orientation1.jpg", "orientation6.jpg" ], "pass": true }, { "check": "keep-off-native.zip:CRC", "actual": null, "expected": null, "pass": true }, { "check": "keep-off-native.zip:exact_bytes:metadata-orientation1.jpg", "actual": true, "expected": true, "pass": true }, { "check": "keep-off-native.zip:exact_bytes:orientation6.jpg", "actual": true, "expected": true, "pass": true }, { "check": "all_original_JPEG_and_ZIP_bytes_unchanged", "actual": { "metadata-orientation1.jpg": "21550a048686793b6379ee881319be96362f607392ffa02d20754e920252fbbe", "orientation6.jpg": "ece44e8130bc69d45e4e42e4ee7579d43c91c14fb53d8e6c542be96df592b04f", "keep-on-metadata-orientation1.jpg": "d392c5fefed02ee5c80d1d9ab731abcf3c3a45c978069ddc4262b1b27baaf4b4", "keep-off-metadata-orientation1.jpg": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "keep-on-orientation6.jpg": "d87a32c0f46692b9051a7f49ac9eb84406d9df31afea58e3cbbdf834d2ddf97b", "keep-off-orientation6.jpg": "22e7db8bebbf3f82fc1af4ec60053d71921026b576572aeab4a405c0c8c8b548", "keep-on-native.zip": "d77ea36b3a718cea9c11b71ebe0beead9fefa0d0b0a07090f44144aa68e39525", "keep-off-native.zip": "9c9cfb48e6ad5dce6526904ac6f2dcc4f4cdaa5a53fa6f589d724797ad608f62" }, "expected": { "metadata-orientation1.jpg": "21550a048686793b6379ee881319be96362f607392ffa02d20754e920252fbbe", "orientation6.jpg": "ece44e8130bc69d45e4e42e4ee7579d43c91c14fb53d8e6c542be96df592b04f", "keep-on-metadata-orientation1.jpg": "d392c5fefed02ee5c80d1d9ab731abcf3c3a45c978069ddc4262b1b27baaf4b4", "keep-off-metadata-orientation1.jpg": "ab053188bf5b87b9c452310e9695def46692b0a0cda12d169b405201066749b9", "keep-on-orientation6.jpg": "d87a32c0f46692b9051a7f49ac9eb84406d9df31afea58e3cbbdf834d2ddf97b", "keep-off-orientation6.jpg": "22e7db8bebbf3f82fc1af4ec60053d71921026b576572aeab4a405c0c8c8b548", "keep-on-native.zip": "d77ea36b3a718cea9c11b71ebe0beead9fefa0d0b0a07090f44144aa68e39525", "keep-off-native.zip": "9c9cfb48e6ad5dce6526904ac6f2dcc4f4cdaa5a53fa6f589d724797ad608f62" }, "pass": true } ] }, "browserVerified": true, "browser": { "images": [ { "file": "metadata-orientation1.jpg", "loaded": true, "naturalHeight": 400, "naturalWidth": 640 }, { "file": "keep-on-metadata-orientation1.jpg", "loaded": true, "naturalHeight": 400, "naturalWidth": 640 }, { "file": "keep-off-metadata-orientation1.jpg", "loaded": true, "naturalHeight": 400, "naturalWidth": 640 }, { "file": "orientation6.jpg", "loaded": true, "naturalHeight": 640, "naturalWidth": 400 }, { "file": "keep-on-orientation6.jpg", "loaded": true, "naturalHeight": 400, "naturalWidth": 640 }, { "file": "keep-off-orientation6.jpg", "loaded": true, "naturalHeight": 640, "naturalWidth": 400 } ], "noCanvas": true, "scrollWidth": 2048, "title": "自编 EXIF JPEG：原生文件浏览器对照", "width": 2048 }, "browserEvidence": { "jsonSha256": "616a0d8cf4ab0e8987ff18ed64c42001378f77b6d4508274771ab21e2d6229f4", "screenshotSha256": "8a81fb16e3b9c2b33c3ff9b8081c44f7bf68b392643a77c3f2768074571a3057", "sameSixNativeJpegsDirectlyLoaded": true, "noCanvas": true, "noCssPixelTransform": true, "tabClosed": true, "localServerStopped": true }, "actualOperations": { "fixtureUploads": 2, "conversionRuns": 2, "eachRunInputFiles": 2, "outputFormat": "JPEG", "settings": [ { "keepExif": true, "run": 1 }, { "keepExif": false, "run": 2 } ], "nativeZipDownloads": 2, "nativeJPEGOutputs": 4, "downloadEventObserved": false, "downloadButtonsClickedOncePerNativeZip": true, "uniqueNewDownloadFilesMatchedBeforeCopy": true, "noRepeatedDownloadOrRegeneration": true, "originalKeepExifTrueRestoredWithoutRun": true, "ownProductAndResearchTabsClosed": true, "noOcrTranslationOrApiTask": true, "files": { "keep-off-native.zip": { "bytes": 52117, "sha256": "9c9cfb48e6ad5dce6526904ac6f2dcc4f4cdaa5a53fa6f589d724797ad608f62" }, "keep-on-native.zip": { "bytes": 53006, "sha256": "d77ea36b3a718cea9c11b71ebe0beead9fefa0d0b0a07090f44144aa68e39525" } } }, "publicMemberFileMap": { "source1.jpg": "metadata-orientation1.jpg", "source6.jpg": "orientation6.jpg", "keep1.jpg": "keep-on-metadata-orientation1.jpg", "remove1.jpg": "keep-off-metadata-orientation1.jpg", "keep6.jpg": "keep-on-orientation6.jpg", "remove6.jpg": "keep-off-orientation6.jpg" }, "sourceReportHashes": [ { "file": "fixture-manifest.json", "sha256": "4a2c30689da502fb63c1cccf0ebce4cd9c37dcaff62325ca42040c44ef6feaf7" }, { "file": "metadata-output-checks.json", "sha256": "10b1837d198b3127e616784ddc0808f076619a70e648e303c0da024046dec161" }, { "file": "orientation6-output-checks.json", "sha256": "68e84e28c5b6edbb7e22386f5091f5ded8afb843e666abfff0acef670f7220a6" }, { "file": "independent-jpeg-check.json", "sha256": "89ca9b793a43645246fc47d585ba7b40b435d1e92b1bb2c9bec657aa8c15d0e4" }, { "file": "browser-native-jpeg-comparison.json", "sha256": "616a0d8cf4ab0e8987ff18ed64c42001378f77b6d4508274771ab21e2d6229f4" }, { "file": "browser-native-jpeg-comparison.jpg", "sha256": "8a81fb16e3b9c2b33c3ff9b8081c44f7bf68b392643a77c3f2768074571a3057" }, { "file": "product-run-receipt.json", "sha256": "01539744820d8b80bd5792b63321dd713c23b28c439ad70efe22aeab22720763" } ], "limits": [ "Only five explicitly authored synthetic EXIF fields were tested; GPS/XMP/IPTC/embedded-thumbnail removal was not tested.", "Keep-off outputs still contain470-byte ICC APP2 and JFIF APP0; this is not all-metadata or complete privacy removal.", "Both Orientation1 outputs have different decoded pixels from input after JPEG reencoding; no lossless claim.", "Orientation6 keep-on output has already transformed pixels but retains the old tag6; applying it again changes display. This is observed behavior, not a claimed fix or a guarantee for every viewer.", "Public fixed checker verifies this bundle hashes, native ZIP member bytes and basic EXIF/ICC markers. It does not decode JPEG pixels or repeat the local73-check/browser observations." ] }