Machine Vision Based Automatic Measurement Algorithm of Concentricity for Large Size Mechanical Parts

In this paper, we proposed an algorithm of automatic measurement of concentricity for large size mechanical parts using machine vision technology. The proposed measuring method consists of the pre-processing and the measuring process. In the pre-processing process, we proposed a method for improving the image quality for accurate calculation. And in the measuring process, we proposed an efficient algorithm of concentricity measurement. Through a series of experiments, the proposed algorithm showed successfully the effectiveness of automatic measurement of concentricity for large size mechanical parts without using any additional measuring equipment.