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3D video has raised great interest in the last decade and currently a new 3D video coding standard, known as 3D video coding extension of High Efficiency Video Coding (3D-HEVC), has been developed. The standard investigates the coding of multiview video plus depth, which consists of texture videos and depth videos of multiple views. Depth video, as a description of geometry information of a scene,...
To accurately represent object edges in depth maps, new depth intra prediction modes, namely Depth Modelling Modes (DMMs), are introduced into 3D-HEVC. In the DMMs, a depth block is approximated by a model that partitions the block into two non-rectangular regions, where each region is represented by a constant value referred to as Constant Partition Value (CPV). To code the CPV, a predicted CPV for...
A Fast Segment-wise DC Coding (SDC) algorithm is proposed for 3D-HEVC depth intra coding. Since SDC is a supplementary option for intra prediction modes, it is not necessary to check SDC option for all intra candidate modes during full Rate-Distortion (RD) cost calculation. Based on the observation that most Prediction Units (PUs) choose the same intra coding mode with and without SDC option, we propose...
Depth map is a kind of video clip that contains 3D object's depth information, and is an important coding feature in the recently 3D video coding standards, which has been applied for the latest 3D coding approaches, e.g. MV-HEVC and 3D-HEVC. It has been approved that the support of depth map coding can significantly improve the coding performance for 3D videos, and provide more flexibility for 3D...
This paper proposes a fast mode decision algorithm for 3D High Efficiency Video Coding (3D-HEVC) depth intra coding. In the current 3D-HEVC design, it is observed that for most of the cases, full Rate-Distortion (RD) cost search of Bi-partition mode could be skipped since most coding units (CUs) of depth map are very flat or smooth while Bi-partition modes are designed for CUs with edge or sharp transition...
A simplified depth modeling mode (DMM) selection algorithm is proposed for 3D-HEVC depth intra coding. Since DMMs are designed for coding units (CUs) with edge or sharp transition, it is not efficient for smooth CU compression. Based on the observation that most CUs in a depth frame are smooth or flat, we notice most of the DMM full-Rate-Distortion (RD) search could be skipped. Using the modes in...
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