Error Concealment Technique of Satellite Imagery Transmission through Information Hiding
IEICE - Transactions on Information and Systems
Supplementary loss concealment technique for image transmission through data hiding
Multimedia Tools and Applications
Journal on Image and Video Processing - Special issue on distributed video coding
Mixture model-and least squares-based packet video error concealment
IEEE Transactions on Image Processing
Intra-frame error concealment using pixel alignment and directional interpolation
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 3
Error concealment for INTRA-frame losses over packet loss channels
PCM'07 Proceedings of the multimedia 8th Pacific Rim conference on Advances in multimedia information processing
Spatial error concealment with sequence-aligned texture modeling and adaptive directional recovery
Journal of Visual Communication and Image Representation
Iterative second-order derivative-based deinterlacing algorithm
Image Communication
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We study the recovery of lost or erroneous transform coefficients in image and video communication systems employing discrete cosine transform (DCT)-based codecs. Previously, we have developed a technique that exploits the smoothness property of image signals and recovers the damaged blocks by maximizing a smoothness measure. There, the first-order derivative was used as the smoothness measure, which can lead to the blurring of sharp edges. In order to alleviate this problem, we propose to use second-order derivatives as the smoothness measure. Our simulation results show that a weighted combination of the quadratic variation and the Laplacian operator can significantly reduce the blurring across the edges while enforcing smoothness along the edges