Components outline subsection distill based on vertex detection

In view of the machine parts examination and the recognition situation to the needs of components image outside feature extraction, this paper introduces the Harris operator´s basic theory and the realization process of algorithm, analyzes two factors which influence the corner extraction such as noise sensitivity and threshold value, proposes the technique of extraction straight line and circular arc through Hough transformation, and realizes the components outline Subsection distill unifies the Harris vertex examination theory. The work provides the foundation of technology for further research about machinery parts detection and recognition.