Method and device for evaluating machine vision original-value detection of exterior corrosion appearance characteristics of material

A topographic feature, machine vision technology, applied in the direction of optical testing flaws/defects, etc., can solve problems such as easy errors and inaccurate test results, and achieve the effect of improving accuracy, avoiding inaccurate measurement and reducing errors.

Inactive Publication Date: 2014-03-26
CHONGQING UNIV OF TECH
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Problems solved by technology

[0014] The purpose of the embodiments of the present invention is to provide a machine vision original value detection and evaluation method and device for material appearance, corrosion and morphology characteristics, aiming to solve the problems of inaccurate detection results and prone to errors in existing corrosion characteristic detection methods

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  • Method and device for evaluating machine vision original-value detection of exterior corrosion appearance characteristics of material
  • Method and device for evaluating machine vision original-value detection of exterior corrosion appearance characteristics of material

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] like figure 1 As shown, the method for detecting and evaluating the original value of the material appearance, corrosion and morphology characteristics of the present invention by machine vision includes the following steps:

[0035] S101: Use the camera to collect the appearance image information of the material, digitize the image, convert the ordinary two-dimensional dot matrix image information into corresponding digital information, and store it in the ...

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Abstract

The invention discloses a method and a device for evaluating the machine vision original-value detection of the exterior corrosion appearance characteristics of a material. The evaluating method comprises the following steps: using a digital camera or a video camera to collect the exterior image information of the material and digitally processing the image; distinguishing the corrosion characteristics information of the material from the collected exterior corrosion characteristic image information of the material; improving the quality of the image through filtering, denoising, image sharpening and histogram equalization; adopting a pattern theory and an image recognition method to obtain the exterior corrosion characteristic image information of the material, and comparing the corrosion characteristics information of the material with corresponding material exterior corrosion rating standards so as to evaluate the corrosion grade of the material. The device for evaluating the machine vision original-value detection of the exterior corrosion appearance characteristics of the material comprises a light source, a sample putting platform, the digital camera, a lens or the video camera and a computer. Through the method and the device, the accuracy of corrosion characteristic detection is improved, and the error of a detection result is reduced.

Description

technical field [0001] The invention belongs to the technical field of material appearance corrosion feature extraction, and in particular relates to a machine vision original value detection and evaluation method and device for material appearance corrosion topography features. Background technique [0002] The material sample test is affected by its environmental factors comprehensively, and various corrosion characteristics (cracks, peeling, bubbling, corrosion spots) will occur on the surface. The appearance of material corrosion is one of the important characteristics of material corrosion resistance, and it is an indispensable data source for evaluating the environmental adaptability of materials. Therefore, accurate extraction of material appearance corrosion features, feature size detection, and evaluation of material surface corrosion morphology characteristics are a basic detection technology for material corrosion appearance. At present, manual observation and ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88
Inventor 纪钢张勇智朱烨华董世都
Owner CHONGQING UNIV OF TECH
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