Author(s):
W. Kumwilaisak and F. Hartung

Proceedings IEEE International Conference on Image Processing (ICIP 2004), October 2004.

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An intra-frame error concealment method: non-linear pattern alignment and directional interpolation  (pdf)

Abstract:
This paper presents a new intra-frame error concealment algorithm designed for both image and video with non-linear pattern alignment and directional interpolation. By this intraframe crrnr conccalment algorithm, first the non-linear pattcm alignment based on a variant version of the dynamic programming algorithm is applied to image pixels around a corrupted region. The non-linear pattem alignment cl~ectivcly provides the hest aligned pixel pairs from boundary pixels around thc corrupted region to dynamically capture local image textures in terms of optimized metric. Then, with the aligned pixel pairs, the directional interpolation algorithm is used to recover image pixels in the corrupted region. From computer simulation in both image and video, the proposed intra-frame error concealment provides much better quality improvement of recovered image pixels comparing to that of the bilinear interpolation approach.

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