Texture based sub-PU motion inheritance for depth coding

The 3D extension of High Efficiency Video Coding (HEVC) has been developed as a standard to code multiview data with depth information. In addition to the existing coding tools in HEVC, in the 3D extension, depth pictures can be coded with supplemental techniques typically designed to utilize the special characteristic of depth pictures. To better utilize the correlation between texture and depth pictures, in this paper, we present an enhanced motion prediction method for depth coding using the motion from the associated texture picture. Such a method inherits the motion information for sub-blocks of depth prediction units. The proposed method provides in average 3.2% bit rate reduction for a 3D video system, wherein the quality is evaluated by the synthesized views.