Machine vision inspection system and method for vehicle components

Abstract

The invention provides a machine vision inspection system and method for vehicle components. The system includes a conveying mechanism including holding platforms for holding a vehicle to be inspectedand causing the holding platforms to move along a production line on the conveying mechanism at a constant speed, wherein each holding platform is provided with a unique identifier; image acquisitionmodules installed at inspection stations on both sides of the conveying mechanism to capture the surface appearance images of respective components of the vehicle to be inspected at multiple angles by a plurality of CCD cameras when it is sensed that the vehicle to be inspected reaches; a preprocessing module for preprocessing the images to generate images conforming to a preset specification according to different components of the vehicle; a positioning module for positioning the components of the vehicle to be inspected in the images by using contour matching or template matching to generating a component image; and a visual inspection module for comparing the component image with its preset image, calculating the similarity between the two, and detecting whether the vehicle componentshave appearance defects according to similarity. The machine vision inspection system and method for vehicle components improve inspection efficiency and inspection accuracy.

Description

technical field [0001] The invention relates to the technical field of machine vision, in particular to a machine vision inspection system and method for vehicle parts. Background technique [0002] Machine vision is a branch of artificial intelligence. In layman's terms, it is to use machines instead of human eyes to make measurements and judgments. The machine vision system converts the captured target into an image signal through a machine vision product (that is, an image capture device, which is divided into CMOS and CCD), and transmits it to a dedicated image processing system to obtain the shape information of the captured target. According to the pixel distribution And brightness, color and other information are converted into digital signals; the image system performs various operations on these signals to extract the characteristics of the target, and then controls the on-site equipment actions according to the results of the discrimination. [0003] Existing mac...

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a machine vision inspection system and method for vehicle parts, which is used to solve the problem of how to detect the quality of vehicle parts by machine vision in the prior art without affecting the detection accuracy. At the same time, the problem of improving detection efficiency

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