Public bug reported: I would like to report a regression in ImageMagick 8:6.8.9.9-7ubuntu5.13. This report is related to https://bugs.launchpad.net/bugs/1796563, but involves image quality instead of permissions.
What happens: In the new version (= security patch) of ImageMagick, the quality of converted images is in some cases lower compared to the old version. It is not visible on all converted images, some seem to suffer more than others. In our case, converting postal barcodes from PDF to PNG results in unscannable codes. The release information for the new version does not mention any impact on quality. Versions involved: - OS: Ubuntu 16.04.4 LTS - Imagemagick: 8:6.8.9.9-7ubuntu5.13 (suffering this issue) - Imagemagick: 8:6.8.9.9-7ubuntu5.12 (working properly) # convert --version Version: ImageMagick 6.8.9-9 Q16 x86_64 2018-09-28 http://www.imagemagick.org # convert demo.pdf demo_new.png # convert --version Version: ImageMagick 6.8.9-9 Q16 x86_64 2018-07-10 http://www.imagemagick.org # convert demo.pdf demo_old.png Attached a few sample images; - On the demo_[old|new].png, note the text in the yellow area - The eventbrite images are screenshots of a part of the converted PNG, due to privacy protection. ** Affects: imagemagick (Ubuntu) Importance: Undecided Status: New ** Tags: convert image imagemagick quality regression ** Attachment added: "Sample images" https://bugs.launchpad.net/bugs/1797875/+attachment/5201212/+files/images.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1797875 Title: ImageMagick 8:6.8.9.9-7ubuntu5.13 quality regression To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/imagemagick/+bug/1797875/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
