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- W2092305784 abstract "The application of error concealment in video communication is very important when compressed video sequences are transmitted over error-prone networks and erroneously received. In this paper, we propose a novel error concealment scheme, in which the concealment problem is formulated as minimizing, in a weighted manner, the difference between the gradient of the reconstructed data and a prescribed vector field under given boundary condition. Instead of using the motion compensated block as the final recovered pixel values, we use the gradient of the motion compensated block together with the surrounding correctly decoded pixels of the damaged block to reconstruct the lost data. Both temporal and spatial correlations of the video signals are exploited in the proposed scheme. A well designed weighting factor is used to control the regulation level at a desired direction according to the local blockiness degree at the boundaries of the recovered block. The experimental results show that the proposed algorithm is able to achieve higher PSNR as well as better visual quality in comparison with the error concealment feature implemented in the H.264 reference software. The blocking effects are greatly alleviated while the structural information in the interior of the recovered block is well preserved." @default.
- W2092305784 created "2016-06-24" @default.
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- W2092305784 date "2005-10-23" @default.
- W2092305784 modified "2023-09-23" @default.
- W2092305784 title "<title>An improved spatio-temporal video error concealment algorithm using partial differential equation</title>" @default.
- W2092305784 doi "https://doi.org/10.1117/12.634342" @default.
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