Hello all, > zamazan4ik has written on 18 November 2017 at 00:18: > > Hello, > > Has PoDoFo library support for MRC compression? Are there segmentator in > the library? Or maybe are there some stuff for writing different layers > with different compression algorithms? >
the PoDoFo library does not support any segmentation of images (at least yet), so no, it does not have MRC support. What is available is that you can have PoDoFo change compression filters on a per-PdfObject basis (however you need to have enough RAM for storing the uncompressed stream). Please note that CCITTFax (de)compression is not implemented yet. I don't know if it's appropriate to write here (sorry), but I've found an (reportedly) open-source solution for MRC compression: pdfbeads, a Ruby gem. See this forum thread: https://forum.diybookscanner.org/viewtopic.php?t=987 (title: MRC compression + text under images - DIY Book Scanner) For further info, look in the Wikipedia article on "Mixed Raster Content". Also I found this https://engineering.purdue.edu/~bouman/software/Text-Seg/tip30.pdf (title: Text Segmentation for MRC Document Compression) > Thank you. > Best regards, mabri ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Podofo-users mailing list Podofo-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/podofo-users
