- Title
- Exploiting spatial smoothness to recover undecoded coefficients for transform domain distributed video coding
- Creator
- Ali, Mortuza; Murshed, Manzur
- Date
- 2013
- Type
- Text; Conference paper
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/76145
- Identifier
- vital:7506
- Identifier
- ISBN:9781479923403
- Identifier
-
https://doi.org/10.1109/ICIP.2013.6738367
- Abstract
- In a transform domain distributed video coding scheme, the correlation between the current encoding unit, e.g. block and slice, and the corresponding side-information is modeled using a virtual channel. This correlation model is then used for rate allocation, quantization, and Wyner-Ziv coding. Since the encoder can only have an estimate of the correlation instead of the exact knowledge of the side-information, the decoder will fail to recover the quantized transformed coeffi- cients with a nonzero probability. In this paper, we propose to integrate a scheme at the decoder to recover the undecoded coefficients using the spatial smoothness property of individual video frames. Simulation results demonstrated that, at different decoding failure probabilities, a transformed coeffi- cient recovery scheme can significantly improve the quality of videos in terms of both PSNR and SSIM.
- Publisher
- IEEE
- Relation
- IEEE International Conference on Image Processing; Melbourne, Australia; 15th-18th September 2013, p. 1782-1786; http://purl.org/au-research/grants/arc/DP1095487
- Rights
- This metadata is freely available under a CCO license
- Subject
- 0801 Artificial Intelligence and Image Processing; 0804 Data Format; Data compression; Probability; Transform coding; Video coding; Video quality
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