New and efficient interframe extensions of EZBC and JPEG 2000
Nowadays, the development of video coders is resulting in significantly increased performance. Among all coder categories, fine grain scalable video coders have the chance to show great advantage by freely extracting code-streams with different bitrates, resolutions, and frame rates from one source-coded bit file to satisfy the various requirements of subscribers in a multicast network. Based on the widely known ENH-MC-EZBC coder with motion-compensated temporal filtering (MCTF) and multi-mode motion-compensation, we enhance and revise its motion model to incorporate advanced mechanisms such as motion-vector prediction competition, block merging, and affine motion-compensation. Experimental results reveal that up to 17% of bit savings can be achieved. Moreover, we consider JPEG 2000 as a backend coder option for the MCTF-generated temporal subbands to directly enable multi-stage code-stream extraction for hierarchical network distribution. Experimental results on common test clips are presented and compared against the current Internet standard AVC/H.264 (JM16.1 test model).