Error Concealment Algorithm of H.264/AVC Using Encoding Residual Information
碩士 === 中原大學 === 電子工程研究所 === 101 === Motion-vector-based error concealment algorithms recover the lost blocks by motion compensation with the estimated motion vectors. Traditionally, the estimated motion vectors for the lost block are derived by the direct usage of the neighboring available motion ve...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/50882486495217086786 |
| Summary: | 碩士 === 中原大學 === 電子工程研究所 === 101 === Motion-vector-based error concealment algorithms recover the lost blocks by motion compensation with the estimated motion vectors. Traditionally, the estimated motion vectors for the lost block are derived by the direct usage of the neighboring available motion vectors. In the proposed paper, the residual signal in a block encoded in the video bitstream is used to measure the reliability of the corresponding motion vector. The residual information is applied to weight the neighboring available motion vectors differently, to further improve a newly proposed mathematical formulation between encoded motion vectors and the extrapolated motion vectors. The proposed error concealment method using the residual information outperforms a state-of-the-art error concealment algorithm by up to 2.12 dB in sequence PSNR.
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