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August 2007
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2007.08.07 10:49 "Problem loading a RGB floating point TIFF", by Mircea Ciocan
Hello, I'm trying to load some high-dynamic images, both gray scale and RGB, they are expressed as 32bits floats, the gray scale image ( 1 sample/pix ) loads OK but I have an RGB image that could not be loaded, here are the main tags of those two images: This image does NOT work: ImageWidth (1 Short): 637 ImageLength (1 Short): 502 BitsPerSample (3 Short): 32, 32, 32 Compression (1 Short): Uncompressed Photometric (1 Short): RGB StripOffsets (1 Long): 8 SamplesPerPixel (1 Short): 3 RowsPerStrip (1 Short): 502 StripByteCounts (1 Long): 3837288 PlanarConfig (1 Short): Contig SampleFormat (3 Short): 3, 3, 3 This image works: ImageWidth (1 Short): 1024 ImageLength (1 Short): 6144 BitsPerSample (1 Short): 32 Compression (1 Short): Uncompressed Photometric (1 Short): MinIsBlack StripOffsets (6 Long): 8, 4194312, 8388616, 12582920, 16777224,... SamplesPerPixel (1 Short): 1 RowsPerStrip (1 Short): 1024 StripByteCounts (6 Long): 4194304, 4194304, 4194304, 4194304, 4194304,... PlanarConfig (1 Short): Contig SampleFormat (1 Short): 3 The library version is TIFFLIB_VERSION 20060323 and the error code is unsupported format. It seem that this version does not support 3 sample/pix floating point encoding and my question is that if there is a later version that does support that format or if not if support for this format is planned in the near future ? Thank you for your help and the nice work and best regards, Mircea Ciocan