| 点到弦距离累加的自适应角点检测 |
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| 引用本文： | 王万良,金亦挺,赵燕伟,胡峰俊.点到弦距离累加的自适应角点检测[J].中国图象图形学报,2012,17(12):1500-1508. |
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| 作者姓名： | 王万良 金亦挺 赵燕伟 胡峰俊 |
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| 作者单位： | 浙江工业大学计算机科学与技术学院, 杭州 310023;浙江工业大学计算机科学与技术学院, 杭州 310023;浙江工业大学特种装备制造与先进加工技术教育部重点实验室, 杭州 310012;浙江工业大学计算机科学与技术学院, 杭州 310023 |
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| 基金项目： | 国家自然科学基金项目(60970021);浙江省科技厅项目(2010R50002-11) |
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| 摘 要： | 提出了一种自适应角点检测算法(ACPDA),以解决CPDA算法采用全局阈值去除伪角点所存在的缺陷,即无法正确处理邻近角点、钝形角点和圆形角点的问题。该算法的优势主要包括:1)提出了角点邻域再检测方法,实现对邻近角点的有效检测,同时使角点定位更加精确;2)为每条曲线构造了一个曲线自适应阈值来去除伪角点,避免了钝形角点的丢失;3)构造角点局部自适应阈值来有效去除圆形角点。对比实验表明,ACPDA算法降低了漏检角点数和伪角点数,具有更好的检测性能。
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| 关 键 词： | 角点检测 ACPDA 邻近角点 自适应阈值 |
| 收稿时间： | 2012/1/10 0:00:00 |
| 修稿时间： | 2012/6/10 0:00:00 |
Adaptive corner detection based on chord-to-point distance accumulation |
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| Wang Wanliang,Jin Yiting,Zhao Yanwei and Hu Fengjun.Adaptive corner detection based on chord-to-point distance accumulation[J].Journal of Image and Graphics,2012,17(12):1500-1508. |
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| Authors: | Wang Wanliang Jin Yiting Zhao Yanwei and Hu Fengjun |
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| Affiliation: | College of Computer Science & Technology, Zhejiang Univ. of Tech., Hangzhou 310023, China;College of Computer Science & Technology, Zhejiang Univ. of Tech., Hangzhou 310023, China;Key Laboratory of Special Equipment and Advanced Processing Technology Ministry of Education, Zhejiang Univ. of Tech., Hangzhou 310012, China;College of Computer Science & Technology, Zhejiang Univ. of Tech., Hangzhou 310023, China |
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| Abstract: | An improved adaptive Chord-to-Point distance accumulation algorithm (ACPDA) is proposed which can handle adjacent corners, obtuse corners, and round corners. The main advantages of our implementation include: 1) the neighborhood of the candidate corners is re-detected for avoiding loss of the adjacent corners, which making the localization of corners more precise; 2) an adaptive threshold for each curve is set for removing the false corners, avoiding loss of the obtuse corner; 3) a local adaptive threshold is constructed to remove the round corners effectively. The experimental results have evaluated the performance of the ACPDA. |
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| Keywords: | corner detection adaptive chord-to-point distance accumulation adjacent corner adaptive threshold |
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