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Gray level image matching method and system

A technology of grayscale image and matching method, which is applied in the field of image processing, and can solve problems such as large amount of computation and inaccurate matching results

Inactive Publication Date: 2011-08-31
HANS LASER TECH IND GRP CO LTD +2
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a grayscale image matching method, which aims to solve the problems of large amount of computation and inaccurate matching results in the prior art grayscale image matching process

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  • Gray level image matching method and system
  • Gray level image matching method and system

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Embodiment Construction

[0042] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0043] In the embodiment of the present invention, the standard sample image and the sample image to be tested are obtained by sampling the obtained standard image and the image to be tested, and the coarse matching area is obtained on the sample image to be tested according to the standard sample image. Standard image, obtain the target area on the image to be tested. The matching process has a small amount of calculation and a short time, and the matching result is more accurate.

[0044] figure 1 The processing flow of grayscale image matching provided by the embodiment of the present inven...

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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 samplingimage 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.

Description

Technical field [0001] The invention belongs to the field of image processing, and particularly relates to a gray-scale 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. For example, in two-dimensional image matching, by comparing the correlation coefficient of the target area and the window of the same size in the search area, take the correlation coefficient in the search area The center point of the window corresponding to the largest is the point with the same name. Its essence is the best search problem using matching criteria under the condition of primitive similarity. [0003] Gray-scale image matching technology is currently widely used in product quality inspection in the production process. However, the traditional matching method takes a long time and is difficult to meet the requirements of high-speed real-time inspection of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/64
Inventor 高云峰蒋会轩熊亚俊黄青龙苗伟
Owner HANS LASER TECH IND GRP CO LTD
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