| Paper: | IMDSP-P7.2 | ||
| Session: | Video Coding I | ||
| Time: | Wednesday, May 17, 14:00 - 16:00 | ||
| Presentation: | Poster | ||
| Topic: | Image and Multidimensional Signal Processing: Video Coding | ||
| Title: | Improving Transform Domain Wyner-Ziv Video Coding Performance | ||
| Authors: | Catarina Brites, Instituto Superior Técnico, Portugal; João Ascenso, Instituto Superior de Engenharia de Lisboa, Portugal; Fernando Pereira, Instituto Superior Técnico, Portugal | ||
| Abstract: | Distributed video coding (DVC) is a new video coding paradigm based on two key Information Theory results: the Slepian-Wolf and Wyner-Ziv theorems. A particular case of DVC, the so-called Wyner-Ziv coding, deals with lossy source coding with side information at the decoder and enables a flexible allocation of complexity between the encoder and the decoder. This paper proposes an improved transform domain Wyner-Ziv video codec including: 1) the integer block-based transform defined in the H.264/MPEG-4 AVC standard, 2) a quantizer with a symmetrical interval around zero for AC coefficients, and a quantization step size adjusted to the transform coefficient bands dynamic range, and finally and 3) advanced frame interpolation for side information generation. The combination of these tools brings significant rate-distortion (RD) gains regarding the state-of-the-art results available in the literature. | ||
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