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2002.04.02 21:13 "Re: Monochrome Flag question", by Vernon L Woodward
2002.04.02 21:30 "Re: Monochrome Flag question", by Dwight Kelly

2002.04.02 21:30 "Re: Monochrome Flag question", by Dwight Kelly

On Tue, 2 Apr 2002, Woodward, Vernon L wrote:

> Is there a tag I can set to distinguish between 3 band (24 bit) monochrome,
> where all three bands have equivalent pixels, and 3 band color (RGB)?

True RGB would use PHOTOMETRIC_RGB. Are you saying you have a file with
PHOTOMETRIC_RGB but it really contains 3 monochrome channels? Or is the
file PHOTOMETRIC_MINISWHITE/PHOTOMETRIC_MINISBLACK with SAMPLESPERPIXEL =
3?

For PHOTOMETRIC_RGB, SAMPLESPERPIXEL=3: I would guess that R, G, B samples
would all be the same value (R=G=B).

-- 
Dwight Kelly
Apago, Inc.  
4080 McGinnis Ferry Rd  Suite 601
Alpharetta, GA 30005
voice:(770) 619-1884  fax:(770) 619-1885
email: dkelly@apago.com web: http://www.apago.com