> I can get a pfm file successfully by ImageMagic from another image > format. But somthing different paramether in pfm file. '1'. I don't > know what does this 1 means. But output image all black. How can I > correct this problem?
The binary data section of a PFM can be either little-endian (denoted by a negative scale factor), or big-endian (denoted by a positive scale factor). When last I checked, darktable's pfm parsing code doesn't support big-endian pfms -- it unconditionally parses them as little-endian. I've planning to write a patch for that for several months (I have a renderer that only outputs big-endian pfms), but never quite got around to it. Taahir Ahmed
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