Scalable motion vector coding for MC-EZBC

Yongjun Wu; John W. Woods

doi:10.1117/12.584679

14 March 2005 Scalable motion vector coding for MC-EZBC

Yongjun Wu, John W. Woods

Author Affiliations +

Proceedings Volume 5685, Image and Video Communications and Processing 2005; (2005) https://doi.org/10.1117/12.584679
Event: Electronic Imaging 2005, 2005, San Jose, California, United States

Abstract

In the scalable video coder MC-EZBC, the scalability for motion vectors was not provided, and this greatly impacts its performance when scaling down to very low bit rates and resolutions. Here we enhance MC-EZBC with scalable motion vector coding using the Context based Adaptive Binary Arithmetic Coder (CABAC). Both a layered structure for motion vector coding and an alphabet general partition (AGP) of the motion vector symbols are employed for SNR and resolution scalability of the motion vector bitstream. With these two new features and the careful arrangement of the motion vector bitstream output from the existing MC-EZBC, we obtain temporal, SNR, and resolution scalability for motion vectors. This significantly improves both visual and objective performance at low bit rates and resolutions with only a slight PSNR loss (about 0.05 dB), but no detectable visual loss, at high bit rates.

Citation Download Citation

Yongjun Wu and John W. Woods "Scalable motion vector coding for MC-EZBC", Proc. SPIE 5685, Image and Video Communications and Processing 2005, (14 March 2005); https://doi.org/10.1117/12.584679

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