On 03/03/2011 02:00 AM, "Jörn P. Meier" wrote: > Hi, > > I would like to implement the following layer mode in the GIMP: > > 1) Transform destination and source pixels to HSL space. > 2) Note original destination pixel saturation. > 3) Set luminance component of destination pixel to luminance component > of source pixel. > 4) Transform destination to HSV color space. > 5) Set saturation of destination pixel to original saturation of > destination pixel. > > I'm assuming destination is also the result of the operation. Not sure > how GIMP handles this, though. > > The purpose of the mode is to colorize a greyscale image while keeping > both the saturation and hue data of the color layer and the luminance > data of the greyscale image. Existing modes (as far as I see) > unfortunately either mess up the color information or the luminance > information. > > So, the question is, what changes would I need to make to add this > layer mode? > > I would be very grateful for any hints. :)
There is already a patch for that (using the CIELCH space instead), see the most recent patch in https://bugzilla.gnome.org/show_bug.cgi?id=325564 / Martin -- My GIMP Blog: http://www.chromecode.com/ "Why GIMP 2.8 is not released yet" _______________________________________________ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
