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POPython PIL incorrectly decoding TIFF colors (using incorrect colorspace)?
 

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  1. POPython PIL incorrectly decoding TIFF colors (using incorrect colorspace)?
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    <p>When I use <code>PIL==1.1.7</code> to load TIFF images, it seems to get the colorspace wrong:</p> <p><img src="https://i.stack.imgur.com/GDaMq.png" alt="bad colorspace conversion"></p> <p>What's going on?</p> <ul> <li>The <code>.tiff</code> was created using <code>convert test.jpg test.tiff</code> (but seems to happen with other tiff files too)</li> <li>It can be found at: <a href="http://hul.wolever.net/dump/test.tiff" rel="nofollow noreferrer">http://hul.wolever.net/dump/test.tiff</a></li> <li>The output when <code>PIL.Image.DEBUG = True</code>:</li> </ul> <pre> >>> from PIL import Image >>> Image.DEBUG = True >>> Image.open("/tmp/test.tiff").show() tag: ImageWidth (256) - type: short (3) - value: (560,) tag: ImageLength (257) - type: short (3) - value: (401,) tag: BitsPerSample (258) - type: short (3) - value: (8, 8, 8) tag: Compression (259) - type: short (3) - value: (7,) tag: PhotometricInterpretation (262) - type: short (3) - value: (2,) tag: FillOrder (266) - type: short (3) - value: (1,) tag: DocumentName (269) - type: ascii (2) - value: /tmp/lemur.tiff tag: StripOffsets (273) - type: long (4) - value: (8, 9282, 18712, 28312, 38000, 48730, 59052, 70406, 83010, 95978, 108967, 121029, 133136, 145555, 157411, 168289, 179433, 191157, 202954, 214664, 226914, 238919, 250547, 261871, 273282, 284453) tag: Orientation (274) - type: short (3) - value: (1,) tag: SamplesPerPixel (277) - type: short (3) - value: (3,) tag: RowsPerStrip (278) - type: short (3) - value: (16,) tag: StripByteCounts (279) - type: long (4) - value: (9274, 9430, 9600, 9688, 10730, 10322, 11354, 12604, 12968, 12989, 12062, 12107, 12419, 11856, 10878, 11144, 11724, 11797, 11710, 12250, 12005, 11628, 11324, 11411, 11171, 2541) tag: XResolution (282) - type: rational (5) - value: ((1207959552, 16777216),) tag: YResolution (283) - type: rational (5) - value: ((1207959552, 16777216),) tag: PlanarConfiguration (284) - type: short (3) - value: (1,) tag: ResolutionUnit (296) - type: short (3) - value: (1,) tag: PageNumber (297) - type: short (3) - value: (0, 1) tag: JPEGTables (347) - type: undefined (7) - value: ????C?? ???}!1AQa"q2??#B??R??$3br? %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz??????????????????????????????????????????????????????????????????????????? tag: YCbCrSubSampling (530) - type: short (3) - value: (2, 2) *** Summary *** - compression: jpeg - photometric_interpretation: 2 - planar_configuration: 1 - fill_order: 1 - size: (560, 401) format key: ('II', 2, 1, 1, (8, 8, 8), ()) - raw mode: RGB - pil mode: RGB </pre>
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    1. PTQuestion
    1. USDavid Wolever
    1. USDavid Wolever
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    1. COYou get a +1 just for introducing me to `Image.DEBUG`.
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      1. POPython PIL incorrectly decoding TIFF colors (using incorrect colorspace)?
      1. USMark Ransom
    2. COIt seems to me to be an issue with the original source. I tried with your image and get the same results. However, trying with another tiff, or running convert on a jpg yields the expected results.
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      1. POPython PIL incorrectly decoding TIFF colors (using incorrect colorspace)?
      1. USsberry
    3. CO@sberry. tiff is not a monolithic format. It's really more like a flexible container that can utilize multiple compression and image types. I think it's probably not a problem with the file itself because my desktop's image viewing program can display the file as expected.
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      1. POPython PIL incorrectly decoding TIFF colors (using incorrect colorspace)?
      1. USSteven Rumbalski
 

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