Gray level image matching method and system

A grayscale image and matching method technology, applied in the field of image processing, can solve the problems of inaccurate matching results and large amount of computation
CN101477632AInactive Publication Date: 2009-07-08HANS LASER TECH IND GRP CO LTD +2
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HANS LASER TECH IND GRP CO LTD
Publication Date
2009-07-08
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention suits the image processing field and provides a gray level image matching method and a system. The method comprises the following steps: acquiring a standard image and an image to be detected; respectively sampling the standard image and the image to be detected to obtain a standard sampling image and a sampling image to be detected; acquiring a rough matching region on the sampling image to be detected according to the standard sampling image; and acquiring a target region on the image to be detected according to the rough matching region and the standard image. In the embodiment of the invention, the acquired standard image and the image to be detected are sampled to obtain the standard sampling image and the sampling image to be detected, the rough matching region is obtained on the sampling image to be detected according to the standard sampling image, and the target region can be obtained on the image to be detected according to the rough matching region and the standard image. The method has the advantages of less computation amount of the matching process, short time and accurate matching result.
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Description

technical field

[0001] The invention belongs to the field of image processing, in particular to a grayscale image matching method and system. Background technique

[0002] Image matching refers to identifying points with the same name between two or more images through a certain matching algorithm. The window center point corresponding to the maximum is used as the point with the same name. Its essence is the optimal search problem using matching criteria under the condition of primitive similarity.

[0003] Grayscale image matching technology is currently widely used in the quality inspection of products in the production process. However, the traditional matching method is either time-consuming and difficult to meet the high-speed real-time detection requirements of the production line, or has high requirements for image quality, resulting in high hardware costs for the detection system.

[0004] Image matching can be mainly divided into grayscale feature matching and g...

Claims

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