I can reproduce this for certain files in xenial. Most of these files are pdf files that were converted from ps format.
** Attachment added: "77-321.pdf" https://bugs.launchpad.net/ubuntu/+source/poppler/+bug/1506612/+attachment/4722623/+files/77-321.pdf -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1506612 Title: pdfimages extracts black rectangles instead of the images To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/poppler/+bug/1506612/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
