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Stereo matching method of double-viewpoint image

A stereo matching, dual-view technology, applied in the field of computer vision and image processing, can solve the problems of slow calculation speed, large parallax error, large accumulation window, etc., to achieve the effect of improving accuracy and calculation speed

Inactive Publication Date: 2015-06-17
SUZHOU INST OF INDAL TECH
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Problems solved by technology

[0008] The above methods are all based on the color similarity of pixels, and do not consider the local characteristics of the image, resulting in a large error in the disparity in the discontinuous area; the use of a larger accumulation window results in a slower calculation speed

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0042] In order to improve the accuracy of matching and the speed of calculation, an embodiment of the present invention provides a stereo matching method for two-viewpoint images, see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 with Image 6 , see the description below:

[0043] 101: Segment the left and right views of the stereo image pair respectively, and obtain the left view matching cost, the left view area disparity, the right view matching cost and the right view area disparity;

[0044] Among them, this step is specifically:

[0045] 1) The bandwidth parameter is selected as (h s1 , h r1 ), split the left and right views respectively;

[0046] Among them, each region after the right view segmentation is ma...

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Abstract

The invention discloses a stereo matching method of a double-viewpoint image. The stereo matching method of the double-viewpoint image comprises the steps of: obtaining a left view matching cost, a left view region parallax, a right view matching cost and a right view region parallax; constituting a crossed accumulation area by regarding each pixel point as a central point and respectively obtaining a matching cost after the accumulation of the left view and a matching cost after the accumulation of the right view; obtaining an initial right disparity map, a first error energy matrix, an initial left disparity map and a second error energy matrix through epipolar constraint and matching costs after the accumulation based on the left view region parallax and the right view region parallax; respectively obtaining correct matching points in the initial right disparity map and the initial left disparity map based on the initial right disparity map, the first error energy matrix, the initial left disparity map and the second error energy matrix and removing wrong matching points; and dividing the left view and the right view of a stereo image pair by adopting bandwidth parameters, and performing smoothing process based on the division result to obtain a right smooth disparity map and a left smooth disparity map.

Description

technical field [0001] The present invention relates to the technical fields of computer vision and image processing, in particular to a stereo matching method for two-viewpoint images. Background technique [0002] Stereo matching is a key problem in computer vision and image processing. It seeks the corresponding mapping relationship between the two views in the stereo image pair based on the existing image data. The essence of the corresponding points after matching is the same three-dimensional scene in different viewpoints Projection in the image. Stereo matching mainly includes formulating similarity measurement criteria and matching search strategies. At present, researchers at home and abroad have proposed a large number of matching methods. [0003] The matching method based on image grayscale focuses on the overall characteristics of the view in the stereo image pair, and detects the similarity or difference of all original grayscale information based on the orig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00
Inventor 曹建东卜树坡吴冬燕
Owner SUZHOU INST OF INDAL TECH
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