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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xiaopeng Fan Au, O. Jiantao Zhou Mengyao Ma Liwei Guo |
| Copyright Year | 2008 |
| Description | Author affiliation: Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong (Xiaopeng Fan; Au, O.; Jiantao Zhou; Mengyao Ma; Liwei Guo) |
| Abstract | Reverse playback is one of the most common video cassette recording (VCR) functions for video streaming systems. However, the predictive processing techniques employed in traditional hybrid video coding schemes severely complicate the reverse-play operation. In this paper, we enhance our previously proposed bidirectionally decodable Wyner-Ziv video coding scheme which supports both forward decoding and backward decoding. We derive that in our scheme the optimal Lagrangian multiplier for the backward motion estimation should be averagely two times larger than for the forward motion estimation. The new multiplier contributes 0.2 dB gain in average. We propose an optimal P-frame/M-frame selection scheme to improve rate-distortion performance when the video is transmitted over error prone channels. The new scheme outperforms both H.264 and our previous scheme at all tested loss rate, and gain up to 0.55 dB over our previous scheme in low loss rate case. |
| Starting Page | 809 |
| Ending Page | 812 |
| File Size | 212821 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424425709 |
| DOI | 10.1109/ICME.2008.4607558 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-06-23 |
| Publisher Place | Germany |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Decoding Streaming media Motion estimation Gain Video coding Bit rate Video recording error resilience Reverse playback M-frame Wyner-Ziv Lagrangian optimization |
| Content Type | Text |
| Resource Type | Article |
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