Hello, I am looking at a PDF where colors are rendered completely incorrectly in PDFBox compared to other readers (Acrobat, Chrome, Apple Preview). I have attached the file + screenshots here <https://github.com/Etienne-Gautier/pdfbox/issues/1>
This issue doesn't seem linked to the color profile (deviceCMYK), as I have ran this with 3 different profiles and always got the bug: - I*SOcoated_v2_300_bas.icc* which was used in 2.0 release - *CGATS001Compat-v2-micro.icc* which I contributed and was added from 3.0 release - *USWebCoatedSWOP.icc* which is used by acrobat as the default DeviceCMYK but cannot be used by PDFBox because of a restrictive license. I had a go at debugging *SampledImageReader.fromAny()* and *DCTFilter.* I didn't find anything obvious but I am lacking context. Maybe someone here can help point me in the right direction or create a fix. Note: the images in this file are a special case in the spec: as the *decode* array (which contains pairs of dMin, dMax) has dMin > dMax because decode = [1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0]. According to the spec (version 1.7, page 344 / version 2.0 page 262): > While this formula applies to values outside the domain xmin to xmax and > does not require that xmin < xmax, note that interpolation used for color > conversion, such as the Decode array, does require that xmin < xmax and > clips x values to this domain so that y = ymin for all x ≤ xmin, and y = > ymax for all x ≥ xmax. > -- ** ** <https://www.canva.com/> Empowering the world to design We're hiring, apply here <https://www.canva.com/careers/>! Check out the latest news and learnings from our team on the Canva Newsroom <https://www.canva.com/newsroom/news/>. <https://twitter.com/canva> <https://facebook.com/canva> <https://au.linkedin.com/company/canva> <https://twitter.com/canva> <https://facebook.com/canva> <https://www.linkedin.com/company/canva> <https://instagram.com/canva>
