关键词: 机器视觉, 几何基元, 几何哈希法, 匹配定位

Abstract: In order to achieve real-time positioning of the workpiece in the industrial processes, a real-time location and matching method based on linear geometric hashing primitive is proposed. In the offline process, linear primitives are extracted from the image, one of the two linear primitives is selected to construct basement, quantify the remaining primitives and establish the geometric Hashing table; In the online process, a set of linear primitives is selected to be basement, quantify the remaining primitives, for the coordinates in the geometric Hashing table query corresponding substrate and vote them, in this way real-time locating and matching are achieved. Through the experimental analysis, the method for the positioning and matching of the workpiece, is good real-time, high accuracy.

Key words: machine vision, geometric primitives, geometric hashing, positioning and matching