Video Coding Based on Shape-Adaptive All Phase Biorthogonal Transform and MPEG-4

摘要

This paper proposes an efficient video coding algorithm based on shape-adaptive all phase biorthogonal transform (SA-APBT) and MPEG-4. Firstly, the input video sequence is segmented into many arbitrarily shaped video objects. Then the motion, shape and texture of all video objects are encoded in accordance with priority. Shape coding uses context-based arithmetic encoding (CAE). SA-APBT and uniform quantization method are adopted in texture coding. Experimental results show that reconstructed video sequence using video coding algorithm based on SA-APBT and MPEG-4 obtains better effects including objective quality and subjective quality compared with the one based on SA-DCT. And the proposed algorithm uses uniform quantization instead of complex quantization table in MPEG-4, which makes hardware implementation easier.