Search found 2 matches

by cornell
2018-10-24T15:56:12-07:00
Forum: Users
Topic: AffineProjection causes subtle color shifts
Replies: 2
Views: 2417

Re: AffineProjection causes subtle color shifts

Thanks. The same command with "-filter point" does indeed produce a zero difference. The example I posted is part of a broader effort to understand similar color shifts when doing PerspectiveProjection. Clearly, I need to research and better understand the role of filters in image transformation. Ed...
by cornell
2018-10-24T14:56:50-07:00
Forum: Users
Topic: AffineProjection causes subtle color shifts
Replies: 2
Views: 2417

AffineProjection causes subtle color shifts

When I perform a convert -distort AffineProjection that only translates, the resulting image is subtly different in color from an equivalent -crop operation. Following are the commands issued and the results of a compare. + convert -version Version: ImageMagick 7.0.8-9 Q16 x86_64 2018-08-04 https://...