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Depth maps aid the generation of virtual viewpoints in multiview video applications. As the depth maps can be represented as a gray scale image sequence, they can be compressed using existing video codecs. However, when the depth maps are compressed using existing codecs, compression artifacts cause undesirable distortions in the rendered views. If the effects of compression artifacts can be minimized at the decoder, it would be possible to use the existing video codecs, which achieve significant compression ratios, to effectively compress depth maps. In this paper we theoretically analyze the effects of compression artifacts on the virtual view generation process. Based on this analysis, a set of guidelines are formulated for designing a post-processing filter, which could effectively minimize the effects of compression artifacts. Assuming that depth maps are piecewise smooth images with sharp …