A New Boundary Matching Algorithm Based on Edge Detection
EurAsia-ICT '02 Proceedings of the First EurAsian Conference on Information and Communication Technology
Video Error Concealment Using Fidelity Tracking
IEICE - Transactions on Information and Systems
Spatial error concealment using pixelwise fine directional interpolation
CSS '07 Proceedings of the Fifth IASTED International Conference on Circuits, Signals and Systems
Estimation of edge direction for block error concealment using hypothesis testing problem
SIP '07 Proceedings of the Ninth IASTED International Conference on Signal and Image Processing
Optimization of spatial error concealment for H.264 featuring low complexity
MMM'08 Proceedings of the 14th international conference on Advances in multimedia modeling
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
A hybrid frame concealment algorithm for H.264/AVC
IEEE Transactions on Image Processing
Adaptive Pixel Interpolation for Spatial Error Concealment
Journal of Signal Processing Systems
Spatial error concealment with sequence-aligned texture modeling and adaptive directional recovery
Journal of Visual Communication and Image Representation
Spatial error concealment with low complexity in the h.264 standard
ACIVS'06 Proceedings of the 8th international conference on Advanced Concepts For Intelligent Vision Systems
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This paper presents a novel error concealment technique based on the discrete cosine transform (DCT) coefficients recovery and its application to the MPEG-2 bit stream error. Assuming a smoothness constraint on image intensity, an object function which describes the intersample variations at the boundaries of the lost block and the adjacent blocks is defined, and the corrupted DCT coefficients are recovered by solving a linear equation. Our approach can be regarded as a special case of Wang et al.'s (1991). However, we show that the linear equation in the proposed algorithm can be decomposed into four independent subequations, requiring much lower computational load and simpler hardware structure than existing algorithms, while providing adequate performances. To develop a generic error concealment (EC) system, the blocks corrupted by the random bit errors are identified by a multistage error detection algorithm. Thus, the proposed EC system can be applied to more realistic environments, such as concealment of random bit error in MPEG-2 bit stream. Computer simulation results show that the quality of a recovered image is significantly improved even at a bit error rate as high as 10-5