NEW-GENERATION OF REAL-TIME SOFTWARE-BASED VIDEO CODER - POPULAR-VIDEO-CODER-II (PVC-II)

A new generation of real-time software-based video coder, the Popular Video Coder II (PVC-II), is presented in the paper. The transform and the motion estimation parts are removed and the quantizer and the entr opy coder are modified in the PVC-II as compared wth the traditional v ideo coder. Moreover, the PVC-II improves the coding performance of it s previous version, the Popular Video Coder[1], by introducing several newly developed efficient coding techniques, such as the adaptive qua ntizer, the adaptive resolution reduction and the fixed-model intrafra me DPCM, into the codec. The coding speed, compression ratio and pictu re quality of the PVC-II are good enough for applying it to various re al-time multimedia applications. Since no compression hardware is need ed for the PVC-II to encode and decode video data, the cost and comple xity of developing multimedia applications, such as video phone and mu ltimedia e-mail systems, can be largely reduced.