Stereo matching method and system for space-time hybrid modulation

A hybrid modulation and stereo matching technology, applied in image analysis, instrumentation, computing, etc., can solve problems such as the difficulty of choosing a spatial window, and achieve the effect of improving matching accuracy and increasing flexibility
CN112200852BActive Publication Date: 2022-05-20XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2022-05-20

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Abstract

The invention discloses a stereo matching method and system of space-time hybrid modulation, which generates a preset three-frame color grid image transformed with time, and projects it onto the surface of an object to be measured; the image collected by the first camera is used as the target image, and the second camera Collect the image as the reference image; select the matching cost function under the spatial constraints; calculate the matching cost of the target image and the reference image under the joint constraints of time and space windows, traverse the entire projection area to obtain the matching cost matrix of the candidate points; get the first camera and the disparity maps of the two images collected by the second camera; respectively calculate the disparity map of the image collected by the first camera and the disparity map of the image collected by the second camera; refine the disparity map to obtain the final disparity map and complete the spatio-temporal mixing Modulated stereo matching, the present invention increases the flexibility of spatial window selection while improving the matching accuracy of stereo matching in areas with weak textures.
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Description

technical field

[0001] The invention belongs to the technical field of stereo vision measurement, and in particular relates to a stereo matching method and system of space-time mixed modulation. Background technique

[0002] Stereo matching is one of the most important links in stereo vision measurement. It is basically to find the corresponding projection point of the three-dimensional object in the two-dimensional image from two images (stereo image pair) taken at different positions of the same object, and thus generate a disparity map. The obtained disparity map can finally obtain the three-dimensional information of the object through the three-dimensional reconstruction technology. At present, stereo vision measurement is widely used in 3D measurement, scene reconstruction, robot navigation, human-computer interaction and other fields.

[0003] According to different optimization theories, stereo matching can be divided into global matching algorithm and local matchi...

Claims

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