Depth Map Coding Method for Scalable Video Plus Depth

Depth map coding along with its associated texture video plays an important role in the display of 3D scene by Depth Image Based Rendering technique. In this paper, the inter-layer motion prediction in Scalable Video Coding is applied in order to utilize the similarity of the motion data between texture video and its associated depth map. Additionally, in order to preserve the edge in depth map, the edge detection algorithm is proposed in depth map coding, which combines the conventional Sobel edge detection and the block-based coding scheme of SVC. And the dynamic quantization algorithm is proposed to preserve the information of boundary regions of the depth map. Simulation results show that the proposed method achieves the BDPSNR gains from 0.463 dB to 0.941 dB for the depth map, and the Bjontegaard bitrates savings range from 9.72 % to 19.36 % for the video plus depth.