Study Of High Efficiency And Low Complexity Technology On 3D Video Coding

Nowadays, three dimension(3D) video is attracting more and more interests by the feature of the sense of realism and interaction. The multi-view plus depth 3D video system is synthesized by several videos and depth, thus the massive data of information and high computational complexity produced by it will present a great challenge to the real time coding, transmission and display. High efficiency and low complexity technology on 3D video coding always be an important topic, which has great significance to the commercialization of 3D video. 3D-HEVC is the extension of HEVC, which is also a MVD system. In this paper, we fist analyze the researching status and existing problems of the 3D video coding, and focuse our research interests on the intra prediction technologies of depth modeling mode(DMM), region boundary chain coding(RBC), and the structural property and structural similarity of the coding blocks in the texture and depth coding. Thus, We speed up the process of mode decision to reduce the computational complexity.The main achievements of this paper focus on the follows:In order to reduce the computational complexity, a fast 3D-HEVC algorithm is proposed based on the Edge-Modeling and the correlation between texture and depth. This method extracts edge features such as the edge direction and length of the edge, the edge validity and other important parameters, to guide prediction process in CU, PU. It will reduce the 3D video encoding time greatly, and it ensure the 3D video coding efficiency at the same time.Considering the depth image features as well as the technical principle of DMM, this paper proposes an adaptive fast mode decision for depth map intra coding based on the correlation between the most probable mode and DMM and RBC. The proposed method divides the coding blocks into flat blocks, directional blocks and texture-complicated blocks, the redundant DMM and RBC are skipped for the flat blocks, and some explicit Wedgelet search patterns are skipped for the directional blocks based on the directivity of non-flat block.