Depth map coding method and device

A depth map coding and depth technology, applied in the field of video coding, can solve problems such as coding methods not involved in depth maps, and achieve the effects of reducing complexity, reducing compression time, and high-efficiency coding

Active Publication Date: 2012-11-21
TSINGHUA UNIV +1
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[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0039] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The invention provides a depth map coding method and a device. The depth map coding method includes establishing a plurality of partition lines which are used for performing wedge-shape partition to a depth macro block, and forming the partition lines into a partition set; using an intra coding mode to code the depth micro block to obtain a first rate-distortion cost value; judging whether an inter coding mode is used for coding the depth micro block and using the inter coding mode to code the depth micro block to obtain a second rate-distortion cost value if the inter coding mode is used for coding the depth micro block; and continuing judging whether the depth micro block contains a discontinuous motion vector field and using a geometric partitioning coding mode to code the depth micro block if the depth micro block contains the discontinuous motion vector field, wherein the geometric partitioning coding mode includes selecting an optimal partition line to partition the depth micro block to obtain a first depth subdomain and a second depth subdomain and subjecting the two subdomains to predictive coding to obtain a third rate-distortion cost value; and comparing the rate-distortion cost values in different coding modes so as to select the coding mode with the minimum rate-distortion cost value for coding the depth micro block. According to the depth map coding method and the device, depth map compression efficiencies are improved, and coding complexities are reduced.

Description

technical field [0001] The present invention relates to the technical field of video coding, in particular to a depth map coding method and device. Background technique [0002] In stereoscopic video and free-viewpoint video systems, the data format composed of multi-viewpoint video and multi-viewpoint depth map has been widely used. Wherein, the depth refers to the distance from each pixel in the video frame corresponding to a point in the three-dimensional space to the camera plane. In stereoscopic video, in order to obtain the video information corresponding to the viewpoint that the user expects to watch through virtual viewpoint rendering, we need to obtain the depth map corresponding to each video frame. Therefore, a stereoscopic video sequence usually includes multiple channels of color video information and a depth map sequence corresponding to each channel of color video. Since the depth information of each pixel in the depth map is an integer value between 0 and ...

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Application Information

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IPC IPC(8): H04N13/00H04N7/26H04N19/597
Inventor 戴琼海汪启扉张永兵季向阳王好谦
Owner TSINGHUA UNIV
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