View synthesis for the mixed-resolution MVD format

The depth information in multiview 3D video sequences is mainly utilized to synthesize new video sequences at virtual viewpoints. Decode depth maps, however, have typical coding artifacts, such as blocking noise, according to the compression ratio. Furthermore, the depth maps are even resized to reduce the sizes of the compressed bitstreams. Defects in depth maps degrade the quality of the synthesized view. This paper proposes a segmentation-based edge-preserving filter and a depth-gradient-based view synthesis algorithm for mixed-resolution multiview videos, to improve the quality of the synthesized views.