Enhanced JBIG-based compression for satisfying objectives of engineering document management system
Eugene I. Ageenko · Optical Engineering · 1998
: Main objectives of an engineering document management (EDM) system are outlined. Existing image compression algorithms (eg. G4 and JBIG) offer efficient solutions to the storage problem but do not sufficiently support other objectives such as spatial access and fast decoding. Here we propose a novel method based on JBIG so that the other objectives are also met. The compression performance of the proposed method is only 10 % worse than that of JBIG. At the same time, spatial access to the compressed file is achieved. The method is also 2.5 times faster in decompression than JBIG. This speed-up is comparable to the Group 4 standard (G4), but with a better compression performance. The proposed method is applicable, not only to engineering drawings, but to binary images in any document imaging system. Subject terms: Image compression; document imaging; binary images; lossless compression. # short version of the paper [1] was presented in Picture Coding Symposium 1997. * ...