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A Hardware-Efficient Multi-Resolution Block Matching Algorithm and its VLSI Architecture for High Definition MPEG-Like Video Encoders

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6 Author(s)
Haibing Yin ; China Jiliang University, Hangzhou, China ; Huizhu Jia ; Honggang Qi ; Xianghu Ji
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High throughput, heavy bandwidth requirement, huge on-chip memory consumption, and complex data flow control are major challenges in high definition integer motion estimation hardware implementation. This paper proposes an efficient very large scale integration architecture for integer multi-resolution motion estimation based on optimized algorithm. There are three major contributions in this paper. First, this paper proposes a hardware friendly multi-resolution motion estimation algorithm well-suited for high definition video encoder. Second, parallel processing element (PE) array structure is proposed to implement three-level hierarchical motion estimation, only 256PEs are enough for one reference frame real-time high definition motion estimation by efficient PE reuse. Third, efficient on-chip reference pixel buffer sharing mechanism between integer and fractional motion estimation is proposed with almost 50% SRAM saving and memory bandwidth reduction. The proposed multi-resolution motion estimation algorithm reached a good balance between complexity and performance with rate distortion optimized variable block size motion estimation support. Also, we have achieved moderate logic circuit and on-chip SRAM consumption. The proposed architecture is well-suited for all MPEG-like video coding standards such as H.264, audio video coding standard, and VC-1.

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IEEE Transactions on Circuits and Systems for Video Technology  (Volume:20 ,  Issue: 9 )