Method of reducing stereo video depth map coding complexity

A technology for depth map coding and stereoscopic video, applied in the field of video coding, can solve the problem of high computational complexity, save system cache, reduce computational complexity, and save total coding time.

Active Publication Date: 2018-01-16
HUAZHONG UNIV OF SCI & TECH
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[0011] In view of the above defects or improvement needs of the prior art, the present invention provides a method for reducing the coding complexity of stere...

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  • Method of reducing stereo video depth map coding complexity
  • Method of reducing stereo video depth map coding complexity
  • Method of reducing stereo video depth map coding complexity

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[0032]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0033] The present invention uses K-means to divide the current PU block pixels into two categories, generates K-means clustering templates, and then uses the generated K-means clustering templates to match the templates in the wedgelet template list to find the best wedgelet segmentation template to complete Specifically encoding the sharp edge blocks of the depth map effectively reduces the com...

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Abstract

The present invention discloses a method of reducing stereo video depth map coding complexity. The method is mainly used to reduce the coding complexity of a depth map edge in the 3D-HEVC, and comprises the steps of using a K-means clustering method to divide the inputted depth map PU block pixels into two categories having obvious difference, and generating a K-means clustering template; calculating the similarity matching degree of the K-means clustering template and the wedge segmentation templates generated at the coding initialization, and recording the optimal similarity matching degreeand an index value of the wedge segmentation template corresponding to the optimal similarity matching degree; according to the optimal similarity matching degree, determining a search radius for searching the optimal wedge segmentation template, calculating the rate distortion of all wedge segmentation templates within the search radius, and finding the optimal wedge segmentation template havingthe smallest rate distortion. The method of the present invention abandons a search mode that needs to store the wedge nodes at a coding/decoding end in advance, saves the system cache, enables the calculation complexity of a DMMI mode to be reduced, and saves 7.1% of the total coding time averagely while guaranteeing the coding quality.

Description

technical field [0001] The present invention belongs to the technical field of video coding based on 3D-HEVC, and more specifically relates to a method for reducing the coding complexity of a stereoscopic video depth map in the depth video coding technology in 3D-HEVC. Background technique [0002] In recent years, following the great achievements of the 3D film industry, 3D stereoscopic video has received more and more attention from academia and industry, and has been widely used in practice. For example, the live video developed by HHI (Heinrich Hertz Institute) Meetings, 3D movies and Microsoft's 3D games (XBOX), etc. In principle, the perception of a 3D scene is achieved by simultaneously presenting different videos to the left and right eyes of the audience. The Joint CollaborativeTeam of 3D Video Coding Extensions (JCT-3V) is developing a new 3D video coding standard called 3D-HEVC. 3D-HEVC adopts the 3D video format of multi-view video plus depth (MVD), and each vi...

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Application Information

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IPC IPC(8): H04N19/147H04N19/176H04N19/597
Inventor 喻莉黎天送王晟伟王鸿奎
Owner HUAZHONG UNIV OF SCI & TECH
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