Scraped surface quality visual detection method based on distance field high point identification

By employing a visual inspection method based on high-point recognition in the distance field, utilizing Lab color space and Euclidean distance field technology, the problems of insufficient human experience and environmental interference in scraping inspection are solved, achieving accurate recognition of high points and improving lubrication properties.

CN122415527APending Publication Date: 2026-07-17KUNMING UNIV OF SCI & TECH
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Patent Information

Application Number
CN202610541145.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-22
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies rely on human experience in scraping and testing, resulting in a lack of objective consistency in test results and difficulty in effectively identifying high points of large-area adhesion and high points under environmental interference.

Method used

A visual detection method based on distance field high point recognition is adopted. The brightness and blue-yellow components are extracted by transforming the Lab color space, a composite scoring function model is constructed, and the high point region is divided by combining the Euclidean distance field and adaptive dynamic threshold segmentation. High points are then filtered by roundness and aspect ratio to achieve accurate high point recognition.

Benefits of technology

It improves the accuracy and consistency of high point identification, reduces manual intervention, effectively separates adhered high points, and improves detection efficiency and lubrication properties.

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Abstract

本发明公开了一种基于距离场高点识别的刮研表面质量视觉检测方法,包括对待识别刮研工件表面图像提取亮度分量和蓝黄分量;依据亮度分量和蓝黄分量,构建复合评分函数模型;依据复合评分函数模型,生成高点初始二值掩膜;在高点初始二值掩膜约束下,构建具有向心梯度特征的欧式距离场;依据欧式距离场,获得初始有效种子点集合并构建有效种子点的扩张区域;依据扩张区域,构建分割边界;依据分割边界,划分初筛高点区域;依据初筛高点区域的面积和周长,定义圆形度算子,以此确定二筛高点区域并获得长宽比;依据长宽比,确定精筛高点区域并获得精筛高点分布图;依据预设窗口对精筛高点分布图进行扫描,计算精筛高点区域的数量,以此获得待识别刮研工件表面图像的高点数量。本发明有助于提高反光条件下的高点识别,同时有效分离黏连高点。
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