Search found 3 matches

by adamj
2011-09-16T17:47:26-07:00
Forum: Users
Topic: offset column in 5x5 color-matrix is ignored?
Replies: 6
Views: 13336

Re: offset column in 5x5 color-matrix is ignored?

The docs must be read carefully... "one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA ( or RGBA with offsets )" NOTE the highlight in blue for RGBA with offsets. Oh man! I tried to read carefully, and I stared at that probably a dozen times recently, but somehow it didn't register. Thanks ...
by adamj
2011-09-16T13:24:08-07:00
Forum: Users
Topic: offset column in 5x5 color-matrix is ignored?
Replies: 6
Views: 13336

Re: offset column in 5x5 color-matrix is ignored?

So I guess it's not that big of a deal to calculate my color matrix in CMYK colorspace and use the 6x6 filter. I will do that for now... it seems to be working correctly.

But it still looks to me like there's a bug in the 5x5 color-matrix.
by adamj
2011-09-16T12:18:21-07:00
Forum: Users
Topic: offset column in 5x5 color-matrix is ignored?
Replies: 6
Views: 13336

offset column in 5x5 color-matrix is ignored?

I've been struggling for a few hours with imagemagick's color-matrix feature, and it seems to me the offset column of the matrix is being completely ignored. As a simple test, try this: * Grab the wizard image from http://imagemagick.com/image/wizard.jpg * Setup an identity transformation using the ...