Segment Test Based X Corner Detection and Sub-pixel Localization
WEI Jun1,2, LIU Da2, WANG Tianmiao2, CAO Li1
1. School of Control Science and Engineering, University of Jinan, Jinan 250022, China; 2. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
魏军, 刘达, 王田苗, 曹莉. 基于段测试的X角点检测与亚像素定位[J]. 机器人, 2011, 33(1): 97-101..
WEI Jun, LIU Da, WANG Tianmiao, CAO Li. Segment Test Based X Corner Detection and Sub-pixel Localization. ROBOT, 2011, 33(1): 97-101..
Abstract：In order to achieve the ability of rapidly detecting and accurately locating X corners,a real-time method to locate X corner is proposed.Firstly,the image is filtered to find X corner candidates according to symmetry and intensity distribution characteristics of X corner image,and then the segment test is performed for each X corner candidate to confirm it's a X corner,find edges and localize corner in sub-pixel.Experiments show that compared with Harris algorithm,the method can detect X corners and eliminate other corners,provides better positioning accuracy and higher detection speed, and has the capability to process PAL images online and in real time.
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