Three-connecting-rod upper lock pin cleanliness detection method based on image processing

Abstract

The invention relates to the technical field of cleanliness detection, in particular to a three-connecting-rod upper lock pin cleanliness detection method based on image processing. The method comprises the following steps: acquiring an RGB image of a target casting; classifying colors in the RGB image according to the H channel value of each pixel point to obtain a plurality of color categories; processing each target color category to obtain a rust image of each target color category; obtaining the maximum color difference value of each pixel point in each connected domain in each corrosion image, and obtaining the connected domain corrosion degree corresponding to each connected domain in each corrosion image according to the maximum color difference value of each pixel point in each connected domain in each corrosion image; obtaining the corrosion degree corresponding to each corrosion image according to the connected domain corrosion degree corresponding to each connected domain in each corrosion image; and obtaining a cleanliness degree index of the target casting according to the corrosion degree of each corrosion image and the variance of the target color category of each corrosion image. The detection efficiency of the cleaning degree of the casting is improved.

Description

technical field [0001] The invention relates to the technical field of cleanliness detection, in particular to a method for detecting the cleanliness of a three-link upper lock pin based on image processing. Background technique [0002] Before the maintenance and inspection of the upper lock pin of the three-link, it needs to be disassembled first, and then the castings obtained after dismantling are shot blasted to remove rust, so as to improve the detection of abnormalities such as sand holes and deformation of the castings ability to improve the quality of restoration. The cleaning level after rust removal needs to meet the requirements, otherwise it will affect the test results of castings. The existing methods for detecting the cleanliness of castings after shot blasting and derusting are usually carried out manually. The manual detection method is not only prone to misjudgment due to subjective reasons, but also affects the subsequent detection of sand holes and crac...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of low detection efficiency of the cleanliness of castings after shot blasting and derusting in the prior art, the purpose of the present invention is to provide a method for detecting the cleanliness of the three-link upper lock pin based on image processing. The plan is as follows:

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