Related: "In general, Acrobat and Reader will show a negative image when the image data indicates that it needs to be inverted. When you have images that are compressed with the CCITTG4 algorithm, there is a flag in the image data that indicates if a logical "1" indicates black or white. The software that created this document must have used the wrong value for this flag. I've seen similar effects also with certain CMYK JPEG images (but it's been years since I encountered the last one of those) where the PDF generator created corrupt data."
Source: https://answers.acrobatusers.com/Why-does-the-PDF-show-as-a -reversed-image-q132625.aspx -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to poppler in Ubuntu. https://bugs.launchpad.net/bugs/134313 Title: pdfimages produces inverted image for black & white image Status in gimp package in Ubuntu: Fix Released Status in poppler package in Ubuntu: Fix Released Status in xpdf package in Ubuntu: Invalid Bug description: Binary package hint: xpdf For any PDF with black & white images, pdfimages extracts them with the colours reversed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gimp/+bug/134313/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
