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TIFF and LibTiff Mail List Archive

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2006.01.04 18:15 "[Tiff] Reading TIFF(CMYK)", by
2006.01.04 18:39 "Re: [Tiff] Reading TIFF(CMYK)", by Bob Friesenhahn
2006.01.04 18:50 "Re: [Tiff] Reading TIFF(CMYK)", by
2006.01.04 19:34 "RE: [Tiff] Reading TIFF(CMYK)", by
2006.01.04 19:41 "Re: [Tiff] Reading TIFF(CMYK)", by Bob Friesenhahn
2006.01.04 19:45 "Re: [Tiff] Reading TIFF(CMYK)", by Kai-Uwe Behrmann
2006.01.06 14:48 "[Tiff] LZW", by Rocky Pulley
2006.01.06 14:55 "Re: [Tiff] LZW", by Chris Losinger
2006.01.06 15:14 "RE: [Tiff] LZW", by Steve Eddins
2006.01.06 19:22 "[Tiff] configuring LZW in libtiff 3.7.2", by monee singh
2006.01.07 01:11 "Re: [Tiff] LZW in libtiff 3.7.2", by Bob Friesenhahn
2006.01.04 18:51 "Re: [Tiff] Reading TIFF(CMYK)", by Kai-Uwe Behrmann

2006.01.04 18:51 "Re: [Tiff] Reading TIFF(CMYK)", by Kai-Uwe Behrmann

Am 04.01.06, 19:15 +0100 schrieb a.malka@comptel.pl:

it's possible to read only one color chanel from tiff(CMYK) let say cyan and save it as greyscale?

Yes of course. Read the image in one buffer and write each 4th sample to a second buffer, After saving the second buffer to whatever format (tiff?) you are done.

If you ask for a ready made function in libtiff: there is none as far as I can tell. You must customise some code yourself.

regards
Kai-Uwe Behrmann

                                + development for color management 
                                + imaging / panoramas
                                + email: ku.b@gmx.de
                                + http://www.behrmann.name