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具有方向特性的X角点的亚像素检测定位

孟偲 薛姣

孟偲, 薛姣. 具有方向特性的X角点的亚像素检测定位[J]. 北京航空航天大学学报, 2015, 41(4): 580-588. doi: 10.13700/j.bh.1001-5965.2014.0293
引用本文: 孟偲, 薛姣. 具有方向特性的X角点的亚像素检测定位[J]. 北京航空航天大学学报, 2015, 41(4): 580-588. doi: 10.13700/j.bh.1001-5965.2014.0293
MENG Cai, XUE Jiao. Sub-pixel X-corner detection and location with directional characteristics[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 580-588. doi: 10.13700/j.bh.1001-5965.2014.0293(in Chinese)
Citation: MENG Cai, XUE Jiao. Sub-pixel X-corner detection and location with directional characteristics[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 580-588. doi: 10.13700/j.bh.1001-5965.2014.0293(in Chinese)

具有方向特性的X角点的亚像素检测定位

doi: 10.13700/j.bh.1001-5965.2014.0293
基金项目: 国家科技支撑资助项目(2013BAF07B02); 中央高校基本科研业务费专项资金资助项目(YWF-14-YHXY-015)
详细信息
    通讯作者:

    孟偲(1977—),男,新疆沙湾人,副教授, Tsai@buaa.edu.cn,主要研究方向为机器视觉与智能系统.

  • 中图分类号: TP391.4

Sub-pixel X-corner detection and location with directional characteristics

  • 摘要: X角点被广泛应用于相机标定与可见光视觉跟踪系统,不仅具有位置信息,还可以具有方向信息.针对X角点的精确位置检测和方向检测,提出了一种利用X角点对称性的检测与定位算法——对称性计算算子(SC,Symmetry Calculation),简称SC算子.该算法主要由两部分组成.先利用对称性计算值确定X角点像素位置,然后基于二次曲线拟合及直线相交求亚像素位置.通过角点定位实验,仿真分析高斯噪声和畸变对定位精度及鲁棒性的影响,并与Harris算法及Micron Tracker系统进行比较.实验表明,本文方法能有效检测X角点,排除其他类型的角点和干扰点,具有较高的定位精度和鲁棒性.

     

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出版历程
  • 收稿日期:  2014-05-23
  • 修回日期:  2014-07-01
  • 网络出版日期:  2015-04-20

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