2002.10.21 14:02 "Re: converting C,M,Y,K seperated tiff to CMYK composite tiff (fwd)", by Dwight Kelly
If you are using the libtiff library, you will need to open the four input files, create an output file with PHOTOMETRIC_SEPARATED, SAMPLESPERPIXEL=8, and PLANARCONFIG either SEPARATED or CONTIG. If you choose CONTIG you will have to interleave the input pixelsl. For SEPARATED you will call TIFFWriteScanline 4 times for each scanline, incrementing the value of the color arg.
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