14 March 2005 Low-complexity video encoding using B-frame direct modes
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Low complexity video encoding shifts the computational complexity from the encoder to the decoder, which is developed for applications characterized by scarce resources at the encoder. Wyner-Ziv and Slepian-Wolf theorems have provided the theoretic bases for low complexity video encoding. In this paper, we propose a low complexity video encoding using B-frame direct modes. We extend the direct-mode idea that was originally developed for encoding B frames, and design new B-frame direct modes. Motion vectors are obtained for B-frames at the decoder and transmitted back to the encoder using a feedback channel, hence no motion estimation is needed at the encoder to encoding any B frame. Experimental results implemented by modifying ITU-T H.26L software show that our approach can obtain a competitive rate distortion performance compared to that of conventional high complexity video encoding.
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Yuxin Liu, Yuxin Liu, Josep Prades-Nebot, Josep Prades-Nebot, Paul Salama, Paul Salama, Edward J. Delp, Edward J. Delp, } "Low-complexity video encoding using B-frame direct modes", Proc. SPIE 5685, Image and Video Communications and Processing 2005, (14 March 2005); doi: 10.1117/12.591388; https://doi.org/10.1117/12.591388

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