2006.01.04 18:15 "[Tiff] Reading TIFF(CMYK)", by

2006.01.04 19:45 "Re: [Tiff] Reading TIFF(CMYK)", by Kai-Uwe Behrmann

Am 04.01.06, 19:50 +0100 schrieb a.malka@comptel.pl:

So maybe i ask another way...

i read tiff specification and can't find in which tag are saved CMYK channel...

Look in tiff.h, TIFFTAG_PHOTOMETRIC indicates the type of the image.

Tutorial: <http://www-128.ibm.com/developerworks/linux/library/l-libtiff/>

Kai-Uwe Behrmann

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

Any suggestion?


On Wed, 4 Jan 2006 a.malka@comptel.pl wrote:

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

Yes. Anything is possible for a programmer. I don't think that any existing libtiff utility will do that though. But ImageMagick and GraphicsMagick *can* do CMYK channel separations.