Legacy ImageMagick Discussions Archive

I am using ImageMagick 6.7.2-8 2011-09-23 Q16 on Windows XP.

When rotating images I get torn images (black stripes) for a certain range of angles. I also had a couple of crashes but they seem not to be reproducible.

Code: Select all

convert rose: -rotate 45 rotate45.jpg   -> good
convert rose: -rotate 46 rotate46.jpg   -> bad
convert rose: -rotate 90 rotate90.jpg   -> bad
convert rose: -rotate 135 rotate135.jpg -> bad
convert rose: -rotate 136 rotate136.jpg -> good

Best,
Andreas

All your (bad) rotations above 45 degrees work fine for me on IM 6.7.2.8 Q16 Mac OSX Tiger. So it must be a windows specific issue or something odd with your IM install or environment.

We can reproduce the problem you reported. It appears to be threading race condition in the shearing algorithm. We'll provide a fix in the next point release of ImageMagick. Thanks.

Hi magick,

As usual: thanks for the fast fix - ImageMagick 6.7.2-9 2011-09-23 on Windows XP works as expected.

Best, Andreas

Legacy ImageMagick Discussions Archive

rotating images more than 45 deg gives torn results

rotating images more than 45 deg gives torn results

Re: rotating images more than 45 deg gives torn results

Re: rotating images more than 45 deg gives torn results

Re: rotating images more than 45 deg gives torn results