CCITT - Image Compression Version number:
CCITT stands for Comité Consultatif International Téléphonique et Télégraphique which is an organization that sets international communication standards. The groups below are groups determined by CCITT of which image compression we support.
CCITT Group 3 1D - a scan line is encoded as a set of runs, each representing a number of white or black pixels, with white and black runs alrenating. Every run is encoded using a different number of bits, which can be uniquely identified when decoded. Reoccurring lengths of runs will be encoded efficiently, while infrequent runs cause the size to grow.