Industrial device rapid locating method based on machine vision

A technology of machine vision and positioning method, which is applied in the direction of instruments, image data processing, optical testing flaws/defects, etc., and can solve the problem of high price
CN102156978BInactive Publication Date: 2012-09-26辽宁科锐科技有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
辽宁科锐科技有限公司
Publication Date
2012-09-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an industrial device rapid locating method based on machine vision, which is a device locating method adopted by machine vision software running in a hardware environment built by an industrial lens, an industrial camera, an image gathering card and an industrial personal computer. The method provided by the invention is a method with combined multiresolution analysis andwavelet transformation characteristics, and the method comprises the following steps of: firstly locating approximately according to the projection transformation vectors of horizontal and vertical direction coefficients of wavelet transformation, then implementing template matching in a low-resolution image, and finally accurately locating in the approximately located field of the original image. The application effect of the method in semiconductor and electronic manufacturing industry is excellent, the locating speed is particularly and obviously improved by means of multiresolution analysis and location preparation, and the locating process of a wafer can be completed in about 10 milliseconds.
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Description

technical field

[0001] The invention relates to an industrial device positioning method, in particular to a machine vision-based rapid positioning method for industrial devices. Background technique

[0002] In recent years, with the continuous improvement of my country's industrial automation level, more and more enterprises and institutions adopt active machine vision positioning systems, and use cameras, image acquisition cards and industrial computers to accurately position parts. For example, the application of visual sensing technology and machine vision in the semiconductor industry started as early as 20 years ago. The semiconductor and electronic equipment market is the birthplace of machine vision technology and has always been one of the huge markets on which machine vision depends. Every technological leap in the semiconductor and electronics manufacturing industries, such as: wafers are getting bigger and bigger, and internal circuits are getting thinner and thi...

Claims

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