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A problem often arising in video communication is the reconstruction ofmissing or distorted areas in a video sequence. Such holes of unavailablepixels may be caused for example by transmission errors of coded video data orundesired objects like logos. In order to close the holes given neighboringavailable content, a signal extrapolation has to be performed. The best qualitycan be achieved, if spatial as well as temporal information is used for thereconstruction. However, the question always is in which order to process theextrapolation to obtain the best result. In this paper, an optimized processingorder is introduced for improving the extrapolation quality ofThree-dimensional Frequency Selective Extrapolation. Using the proposedoptimized order, holes in video sequences can be closed from the outer marginto the center, leading to a higher reconstruction quality, and visuallynoticeable gains of more than 0.5 dB PSNR are possible.

Optimized processing order for 3D hole filling in video sequences using frequency selective extrapolation