4 August 2010 A total variation-based approach for composing better pictures in multiple description coding
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Proceedings Volume 7744, Visual Communications and Image Processing 2010; 77441G (2010) https://doi.org/10.1117/12.863286
Event: Visual Communications and Image Processing 2010, 2010, Huangshan, China
Abstract
One of the important issues in multiple description coding (MDC) for image and video signals is to compose pictures of the "best" quality when more than one description is received at the decoder side. To this goal, a transform-domain overlapping technique combined with some necessary translations in the transform domain is proposed in the popular MDC schemes with staggered quantizers. However, the achievable gain is rather limited. In this paper, we formulate this enhancement problem as a total variation (TV) regularized optimization constrained by the knowledge of the quantization intervals of the DCT coefficients of each composed picture. In this TV-based approach, the transformdomain overlapping technique is used to find the more accurate quantization intervals in which the true DCT coefficients will fall while receiving more than one description. Simulation results demonstrate that such a TV-based enhancement yields a higher quality gain in both objective (e.g. PSNR-based) and subjective (i.e. visual perception) evaluations than using the transform-domain overlapping technique.
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Shuyuan Zhu, Shuyuan Zhu, Bing Zeng, Bing Zeng, } "A total variation-based approach for composing better pictures in multiple description coding", Proc. SPIE 7744, Visual Communications and Image Processing 2010, 77441G (4 August 2010); doi: 10.1117/12.863286; https://doi.org/10.1117/12.863286
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