Digital Signal Processing

   

Error Concealment by Means of Motion Refinement and Regularized Bregman Divergence

Authors: Alessandra M. Coelho, Vania V. Estrela, Felipe P. do Carmo, Sandro R. Fernandes, V. V. Estrela, Vania Vieira Estrela

This work addresses the problem of error concealment in video transmission systems over noisy channels employing Bregman divergences along with regularization. Error concealment intends to improve the effects of disturbances at the reception due to bit-errors or cell loss in packet networks. Bregman regularization gives accurate answers after just some iterations with fast convergence, better accuracy, and stability. This technique has an adaptive nature: the regularization functional is updated according to Bregman functions that change from iteration to iteration according to the nature of the neighborhood under study at iteration n. Numerical experiments show that high-quality regularization parameter estimates can be obtained. The convergence is sped up while turning the regularization parameter estimation less empiric, and more automatic.

Comments: 8 Pages. Proceedings of the IDEAL 2012, Springer Verlag, 2012

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[v1] 2017-08-18 05:45:49

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