Legacy ImageMagick Discussions Archive

As far as I understand viewtopic.php?t=22934, IM7 should still include the convert utility. However, there is no convert utility built in https://travis-ci.org/ImageMagick/Image ... s/82754939. Is this intended?

On a second thought, using a limit for the maximum tree depth is also an performance issue. I generated two files with 16-bit depth, where the upper/lower 8 bit of all colors are equal: Performance Test 1 , Performance Test 2 . time convert -depth 16 -size 512x512 imagemagick_histogram_performance ...

I think I understand what is going on. The histogram uses some tree-like structure and computes the child index from 1 bit of each channel (starting with the most significant bit). However, there is a limit for the tree depth (currently 8) and at the leaf nodes, the code uses a compare function to ...

The problem may be that both your pixels are entirely transparent, so the histogram software treats them as equal. Sounds like a reasonable explanation. However, I would also consider that behavior as a bug, because the histogram should reflect the image data. I created a second image to validate ...

I have the following file hexdump -C imagemagick_histogram_bug.rgba 00000000 b4 83 d1 00 b4 82 d0 00 |........| 00000008 and create a histogram for it: convert -depth 8 -size 2x1 imagemagick_histogram_bug.rgba -format %c histogram:info:- 2: (180,131,209, 0) #B483D100 srgba(180,131,209,0) According ...