An intra-frame error concealment: non-linear pattern alignment and directional interpolation (MP-P2)

Author(s) : Wuttipong Kumwilaisak (King Mongkut University of Technology, Thailand) Frank Hartung (Ericsson Research Lab, Germany)

Abstract : This paper presents a new intra-frame error concealment algorithm designed for both images and videos with non-linear pattern alignment and directional interpolation. By this intra-frame error concealment algorithm, first the non-linear pattern alignment based on the variant version of dynamic programming algorithm is applied to image pixels around the lost region. The non-linear pattern alignment effectively provides the best corresponding pixel pairs from the boundary pixels of the lost regions to dynamically capture a local image texture in terms of optimization metrics. Then, with derived corresponding pixel pairs,the directional interplation algorithm is used to recover pixels in the lost region. From computer simulation in both image and video, the proposed intra-frame error concealment provides significant enhancement of the capability in capturing and recovering the lost image texture comparing to the bilinear interpolation approach.

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