关键词: 铆钉质心, 线段向量, 铆钉线, Fisher准则, 聚类融合

Abstract: A cluster-fusion recognition method for rivet lines was proposed based on Fisher discriminant criterion function. The edge points were extracted using Canny operator, and processed by morphology in order to get the location of the centroid. Then, any two centroids were combined to construct the collection of line segments which were classified by Fisher criterion. According to the principle that the distance from the segments on one rivet line to origin point is similar, the segment-vectors were fused to fit the rivet line. The experimental results show that its accuracy and robustness are improved, which can meet the requirements of real-time detection.

Key words: rivet centroid, segment-vecter, rivet line, Fisher criterion, cluster-fusion