A corner detection algorithm and evaluation method basing on measurement
A sub-pixel detection corner detection method based on fitting is presented, and mathematic algorithm of the method is in accordance with sub-pixel edge detection, improving the precision of the image measurement In this paper, based on the geometry that the corner must be the point on the edge and intersection of two edge or many edge points, an algorithm based on the sub-pixel edge to get the intersection is presented. Then the edge equation is acquired by use of the sub-pixel edge detection algorithm in the sub-pixel edge area, the sub-pixel corner position is found by center of gravity method. And a new evaluation method is also presented, whose criterion is the precision of CCD calibration. In the experiment, comparing to the Bouguets corner detection algorithms using the new evaluation method, the method of this paper is more precise. Therefore the algorithm is more effective in the field of measuring the dimensions in industry.
Corner detection Sub-pixel Edge detection evaluation method
Qiucheng Sun Qingchang Tan Yueqian Hou Wusheng Tang
College of Basic Science,ChangChun University of Technology Institute of MechanicalScience and Engin Institute of Mechanical Science and Engineering Jilin University Changchun,Jilin Province,China Institute of Mechanical Science and Engineering,Jilin University,Institute of Mechanical Engineering
国际会议
长春
英文
25-28
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）