Abstract
In contrast to traditional predictive coding, Wyner-Ziv video coding enables low-cost encoding architectures, in which the computationally expensive tasks for performing motion estimation are shifted to the decoder-side. In Wyner-Ziv video coding, side-information generation is a key aspect profoundly affecting the compression capacity of the system. This paper presents a novel technique which enables side-information refinement after DC coefficient band decoding in a transform-domain Wyner-Ziv video codec. The proposed side-information refinement approach performs overlapped block motion estimation and compensation, utilizing multi-hypothesis pixel-based prediction. The experimental results show that the presented Wyner-Ziv video codec incorporating the proposed technique yields significant and systematic compression gains of up to 23.22% with respect to the state-of-the-art DISCOVER codec.
| Original language | English |
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| Title of host publication | IEEE International Conference on Digital Signal Processing, DSP 2011 |
| Place of Publication | Corfu, Greece |
| Publisher | IEEE Signal Processing Society |
| Number of pages | 6 |
| ISBN (Print) | 978-1-4577-0272-3 |
| Publication status | Published - Jul 2011 |
| Event | Unknown - Duration: 1 Jul 2011 → … |
Conference
| Conference | Unknown |
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| Period | 1/07/11 → … |
Keywords
- Distributed source coding
- Wyner-Ziv video coding
- side-information generation
- motion estimation