Depth map encoding compression method for 3DTV and FTV system

Abstract

The invention discloses a depth map coding compression method applied to 3DTV and FTV systems. The depth map is divided into an immobile non-edge region, a non-edge region and an edge region in a moving object according to the edge information of the depth map and the motion information of viewpoint images, the depth map is coded after the coding of the viewpoint images is completed, and the searching range of a macro block coding mode in the immobile non-edge region and the non-edge region in the moving object can be reduced on the premise of the ensured coding quality of the depth map coding process by using the macro block coding mode and a motion vector determined after the viewpoint image coding in combination with the three regions of the depth map, thereby reducing the depth map coding complexity and improving the depth map coding speed.

Description

technical field [0001] The invention relates to a processing technology of stereoscopic and multi-viewpoint video signals, in particular to a depth map encoding and compression method applied to 3DTV and FTV systems. Background technique [0002] 3DTV (three Dimensional Television) and FTV (Free-viewpoint Television) are three-dimensional video systems with advanced visual media modes, including visual functions that traditional two-dimensional video systems do not have. 3DTV can better reflect the depth information of the scene, while FTV can well satisfy users to select and operate audio-visual objects from any angle. The Joint Video Experts Group (JVT, Joint Video Team) organization proposed the MVD (multi-view video plus depth) structure, which uses N-viewpoint video combined with N-viewpoint depth information to express the three-dimensional information of the scene to support user-oriented virtual reality. A 3D video system for viewpoint rendering. In the MVD structu...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, relevant researchers have proposed many depth map coding and compression methods applied to 3DTV and FTV systems, such as the compression method of depth map sequence. method to compress it, because this method not only utilizes the spatial correlation of the depth map sequence, but also utilizes the time correlation of the depth map sequence, so that the method obtains better compression performance and reduces the pressure on the transmission bandwidth. However, this also increases the coding complexity and greatly reduces the coding speed of the depth map.

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