1994.09.16 07:25 "Re: TIFF ReferenceBlackWhite Field Versus Leffler's TIFF Software", by John M Davison
the spec explicitly says that the ReferenceBlackWhite tag is to be used with RGB and YCbCr images only. So if you find this tag in a file, SamplesPerPixel ought to be 3.
Is it so, then, that there can be no extra samples if the ReferenceBlackWhite tag is used? I am skeptical.
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