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April 2005
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2005.04.29 19:44 "Adobe Photoshop Corrupt TIFF", by Bill Bither
We have a few TIFF images from a customer that no software other than Adobe Photoshop CS will read. It is a straightforward RGB image with LZW compression. When I resave this image using Photoshop CS the only differences are the strip offsets. The strip offsets are obviously incorrect. Could there have been a bug in a version of Photoshop CS that generates these invalid TIFF's? Given that there could be thousands of these images around I would like to know how much efforts we should put in to support this since it will load in Photoshop, or if there is any advice on obtaining the correct strip offsets for this apparent corrupt image. Original "corrupt" image: SubFileType (1 Long): Zero ImageWidth (1 Short): 1632 ImageLength (1 Short): 2464 BitsPerSample (3 Short): 8, 8, 8 Compression (1 Short): LZW Photometric (1 Short): RGB ImageDescription (158 ASCII): Duck Island Puffin 1/ 320s, at f/5.6 || E.Com... Make (18 ASCII): NIKON CORPORATION Model (10 ASCII): NIKON D2H StripOffsets (47 Long): 22056659, 22151198, 22245330, 22341639,... SamplesPerPixel (1 Short): 3 RowsPerStrip (1 Short): 53 StripByteCounts (47 Long): 94539, 94132, 96309, 98862, 100948, 100795,... XResolution (1 Rational): 246.4 YResolution (1 Rational): 246.4 PlanarConfig (1 Short): Contig ResolutionUnit (1 Short): Inch Software (27 ASCII): Adobe Photoshop CS Windows DateTime (20 ASCII): 2004:09:03 16:30:07 Predictor (1 Short): 2 700 (9855 Byte): 60, 63, 120, 112, 97, 99, 107, 101, 116, 32,... Copyright (42 ASCII): Copyright Cardinal Photo / David Cardinal RichTiffIPTC (63 Long): 540, 469893122, 2634053634, 1801680196,... Photoshop (8242 Byte): 56, 66, 73, 77, 4, 4, 0, 0, 0, 0, 0, 249,... 34665 (1 Long): 19360 ICCProfile (560 Undefined): 37724 (22036072 Undefined): Image re-saved with Photoshop SubFileType (1 Long): Zero ImageWidth (1 Short): 1632 ImageLength (1 Short): 2464 BitsPerSample (3 Short): 8, 8, 8 Compression (1 Short): LZW Photometric (1 Short): RGB ImageDescription (158 ASCII): Duck Island Puffin 1/ 320s, at f/5.6 || E.Com... Make (18 ASCII): NIKON CORPORATION Model (10 ASCII): NIKON D2H StripOffsets (47 Long): 19922, 114462, 208594, 304904, 403766,... SamplesPerPixel (1 Short): 3 RowsPerStrip (1 Short): 53 StripByteCounts (47 Long): 94539, 94132, 96309, 98862, 100948, 100795,... XResolution (1 Rational): 246.4 YResolution (1 Rational): 246.4 PlanarConfig (1 Short): Contig ResolutionUnit (1 Short): Inch Software (27 ASCII): Adobe Photoshop CS Windows DateTime (20 ASCII): 2005:04:29 15:06:39 Predictor (1 Short): 2 700 (9855 Byte): 60, 63, 120, 112, 97, 99, 107, 101, 116, 32,... Copyright (42 ASCII): Copyright Cardinal Photo / David Cardinal RichTiffIPTC (63 Long): 540, 469893122, 2634053634, 1801680196,... Photoshop (8242 Byte): 56, 66, 73, 77, 4, 4, 0, 0, 0, 0, 0, 249,... 34665 (1 Long): 7108936 ICCProfile (560 Undefined): 37724 (22036072 Undefined): Regards Bill Bither Atalasoft