An apparatus encodes a binary shape signal by using a modified context-based arithmetic encoding technique. The apparatus computes a context number of each binary pixel in the binary shape signal based on its corresponding context. Then, a probability corresponding to the context number is detected and...http://www.google.fr/patents/US5933105?utm_source=gb-gplus-shareBrevet US5933105 - Context-based arithmetic encoding/decoding method and apparatus
Context-based arithmetic encoding/decoding method and apparatus