Unrestraint multi-camera picture matching method based on space-time consistency

A matching method and unconstrained technology, applied in the field of image matching, which can solve the problems of unstable matching relationship between images, severe jitter in detection and positioning, and easy occurrence of mismatching, etc., to achieve rapid establishment and smooth change, smooth and accurate change, Optimizing the effect of matching relationships
CN106887015AActive Publication Date: 2017-06-23HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2017-06-23

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Abstract

The invention discloses an unrestraint multi-camera picture matching method based on space-time consistency. The method comprises the following steps of reading pictures captured by a reference camera and an auxiliary camera; extracting characteristic points of a current picture; calculating the characteristic description vector of each characteristic point; performing similarity comparison of the characteristic description vectors and establishing matching relations of corresponding characteristic points; querying stable matching relations in the matching relations, and according to the number of the stable matching relations, screening characteristic point sets used for calculating a transformation matrix; according to the matching relation of the screened characteristic point sets, calculating the transformation matrix to obtain the matching relation between pictures of the two cameras; and reading a next picture and repeating the abovementioned steps till the end. During the screening of the matching relations, the space-time consistency is fully considered. The effective prior information is obtained by retrieving the stable matching relations and is used for screening the current matching relation, so that the stability of image matching between adjacent frames of the unrestraint camera can be effectively enhanced, and the matching precision and efficiency is improved.
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Description

technical field

[0001] The invention belongs to the technical field of image matching, and more specifically relates to an unconstrained camera picture matching method based on spatio-temporal consistency. Background technique

[0002] In many applications such as multi-camera joint object detection, tracking, scene stitching and reconstruction, multi-camera image registration is required. The idea of ​​image registration in the prior art is to extract the images acquired by each camera at the same time, extract the feature points of each image, and then use the feature point matching method to obtain the optimal matching point set between images, and then use the point set to calculate the camera The projective transformation relationship matrix between them, and finally realize the registration between multi-camera images. However, the effect of this processing mode depends on a stable set of optimal matching points. When faced with applications such as unconstrained rela...

Claims

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