Recursive Block Coding--A New Approach to Transform Coding

摘要: The concept of fast KL transform coding introduced earlier [7], [8] for first-order Markov processes and certain random fields has been extended to higher order autoregressive (AR) sequences practical images yielding what we call recursive block (RBC) algorithms. In general, the rate-distortion performance these algorithms is significantly superior that conventional algorithm. Moreover, permit use small size transforms, thereby removing need transforms making hardware implementation such coders more appealing. This improved verified image data results in suppression block-boundary effect commonly observed traditional techniques. illustrated by comparing RBC with cosine using both one- twodimensional Examples encoded at various rates are given.