Color space RGB to CMYK DLL for Win32?

[Carl Gundel]

Is anyone here familiar with an open source Win32 library that can convert RGB bitmap or JPEG files to CMYK (cyan magenta yellow).

I'd like to play with this using LB, and Windows does not provide such a function, surprisingly.  I could write it in LB but it would be much too slow for my purposes.

-Carl

[tsh73]

Hello Carl
stack overflow
stackoverflow.com/questions/2426432/convert-rgb-color-to-cmyk
mentioned
www.littlecms.com/color-engine/
It has tutorial with first example (page 9) converting BMP with color profile
While it does convert from BMP to BMP (it seems), there are some TYPE_CMY_... constants

It is under MIT licence, mentioned VC so should exists under Windows (I see lot's of linux precompiled on the page, but not windows - may be you will have to compile it)

[Carl Gundel]

Mar 10, 2024 6:21:15 GMT -5 tsh73 said:

Hello Carl
stack overflow
stackoverflow.com/questions/2426432/convert-rgb-color-to-cmyk
mentioned
www.littlecms.com/color-engine/
It has tutorial with first example (page 9) converting BMP with color profile
While it does convert from BMP to BMP (it seems), there are some TYPE_CMY_... constants

It is under MIT licence, mentioned VC so should exists under Windows (I see lot's of linux precompiled on the page, but not windows - may be you will have to compile it)

Thanks a bunch!