Long Support Wavelet Based Scalable Video Coding and its Parallel Implementation
Discrete wavelet transform is very suitable for scalable video coding due to its time-spatial frequency locality and multi-resolution analysis. Fully scalable embedded bit stream can be generated from source video frames, which are encoded only one time by using scalable video coding scheme. Decoding a part of the bit stream can get video frames with different quality and time-spatial resolution. In this paper, Enhanced MC-EZBC (EMC-EZBC) is implemented based on MC-EZBC, in which long support wavelet based on the lifting scheme is adopted in sub-pixel accurate motion compensation time filter (MCTF) and spatial analysis. The experimental results show that EMC-EZBC is comparable to H.264/AVC at medium and high bit rates. Parallel EMC-EZBC is implemented on Nankai Stars cluster system and high speedup is obtained.