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Quick parallax estimation and motion estimation method

A technology of parallax estimation and motion estimation, which is applied in the coding field of multi-view video signals, can solve problems such as unfavorable software and hardware implementation, large calculation amount, etc., and achieve the effect of reducing computational complexity, improving coding speed and ensuring quality.

Inactive Publication Date: 2012-06-27
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the block matching method is used for disparity estimation and motion estimation, although the full search method can obtain very high search accuracy, its huge amount of calculation is not conducive to the realization of software and hardware.

Method used

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  • Quick parallax estimation and motion estimation method
  • Quick parallax estimation and motion estimation method
  • Quick parallax estimation and motion estimation method

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026]Divide all frames in the multi-view video predictive coding structure into D1 type frames and D2 type frames, wherein, D1 type frames include all I frames in the multi-view video predictive coding structure and P frames with only one reference frame, Fast disparity estimation and motion estimation methods are not used when encoding each frame in the D1 type frame; the D2 type frame includes all B frames with multiple reference frames in the multi-view video prediction coding structure. figure 1 A typical multi-view video predictive coding structure is given, which is called layered B-frame predictive coding structure. exist figure 1 The horizontal axis represents the viewpoint (View), and the vertical axis represents time (Time). figure 1 It is a multi-view video predictive coding structure with a GOP (Group of Pictures) length of 8 co...

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Abstract

The invention discloses a quick parallax estimation and motion estimation method. According to the characteristic of great probability that an adjacent macro block in accordance with a current macro block on marginal attribute and the current macro block belong to the same object so that parallax vectors or motion vectors thereof are comparatively consistent, the parallax vector or the motion vector of the current macro block is predicted by using the parallax vector or the motion vector of the coded adjacent macro block of the current macro block so as to adaptively reduce the search ranges of parallax estimation and motion estimation in a multi-view video coding process and fulfill the purposes of reducing the computational complexity of multi-view video coding and improving the multi-view video coding speed. Moreover, the method ensures the quality of the coded reconstructed video signal by adopting a fine search strategy for the strenuous motion object.

Description

technical field [0001] The invention relates to a coding technology of multi-viewpoint video signals, in particular to a fast parallax estimation and motion estimation method. Background technique [0002] Multi-viewpoint color video is a group of video sequence signals obtained by shooting the same scene with camera arrays at different positions in space. It is a new type of video with stereoscopic and interactive functions. The multi-viewpoint video system allows users to freely choose different viewing angles to watch scenes, and can be applied to emerging media services such as free-viewpoint TV, stereoscopic TV, and three-dimensional telemedicine. Compared with ordinary single-channel video signals, multi-viewpoint color video signals have a larger signal volume. In order to effectively store and transmit multi-viewpoint color video signals, and realize free switching between viewpoints and interactive operations between users and systems in applications, it is necessa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/32H04N13/00H04N19/157H04N19/179H04N19/513
Inventor 郁梅姒越后蒋刚毅
Owner NINGBO UNIV