Legacy ImageMagick Discussions Archive

With reference to viewtopic.php?f=1&t=31861#p145680.

Input:


Using IM 6.9.8.4 Q16 I can change everything but pure black to white using:


But using IM 7.0.5.5 Q16, it does not work on all channels. Only the red channel seems changed.

Perhaps this is an issue of starting with a 3 channel image and resulting in an image that has only black and white and thus would be a single channel result.

This issue does not seem to have been fixed in the latest betas as of today.

Thanks for the problem report. We can reproduce it and will have a patch to fix it in GIT master branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ http://www.imagemagick.org/download/beta/ by sometime tomorrow.

Thanks. This seems to be fixed in the latest beta today.