Legacy ImageMagick Discussions Archive

Well, the problem with this is that the alpha channel is not a "transparency" channel. If you open that TIFF in Photoshop, you will not see any transparency--only the normal image with an additional channel: https://dl.dropboxusercontent.com/spa/4moihw0kt47f2sy/j02xou4p.png The problem is that I ...

Once again, I'm at an impasse. Consider the following TIF: https://www.dropbox.com/s/usn9jv0protgijv/bad.tif?dl=0 When I run the following command, trying to convert it to a JPEG, it chokes: convert bad.tif -profile ./sRGB.icc -background white -compose over -flatten ugly.jpg The problem is that ...

You wouldn't happen to know the C API calls to replicate your convert command above, do you?

Thanks for your help! I tried your command, and it didn't work.. however, I was using an older version of Image Magick (6.8.9), and I tested it against 6.9.1-10, and it works on that version for both files! Time to rev..

Thanks again!

Hello! I'm trying to do this with the C API (not C++), but I'm able to replicate this problem with "convert". I am trying to consistently flatten TIFFs against a white background. When I encounter a TIFF that has transparency disabled, but contains an auxiliary alpha channel, Image Magick considers ...