c++ decode CCITT encoded images in pdfs

问题

I'm trying to extract all images out of PDF files in C++. I'm stuck in decoding CCITT encoded images.

Does anyone know an opensourced code for this?

I use the ImageMagick Magick++ Library, is it possible to do the decoding with this library, too?

Thanks for your help!

回答1:

CCITT is one of the encodings TIFF supports, though in a PDF file the CCITT images are probably raw data.

You can convert a raw CCITT image into a Tiff image using Fax2Tiff. It should be easy enough to work with the image once it is encoded as a Tiff.

Fax2Tiff is part of LibTiff. See LibTiff Source

回答2:

Or you can append a header on it and treat it as a tiff file.

来源：https://stackoverflow.com/questions/4595646/c-decode-ccitt-encoded-images-in-pdfs