大视场下线结构光光条中心的快速提取

张瑞瑛, 周萍, 冯煦, 李松, 舒强

张瑞瑛, 周萍, 冯煦, 李松, 舒强. 大视场下线结构光光条中心的快速提取[J]. 应用光学, 2010, 31(3): 432-436.
引用本文: 张瑞瑛, 周萍, 冯煦, 李松, 舒强. 大视场下线结构光光条中心的快速提取[J]. 应用光学, 2010, 31(3): 432-436.
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ZHANG Rui-ying, ZHOU Ping, FENG Xu, LI Song, SHU Qiang. Rapid extraction of line-structured light stripe in large field of view[J]. Journal of Applied Optics, 2010, 31(3): 432-436.
Citation: ZHANG Rui-ying, ZHOU Ping, FENG Xu, LI Song, SHU Qiang. Rapid extraction of line-structured light stripe in large field of view[J]. Journal of Applied Optics, 2010, 31(3): 432-436.
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大视场下线结构光光条中心的快速提取

  • 武汉大学电子信息学院,湖北武汉430079

详细信息
    通讯作者:

    张瑞瑛(1989-),女，湖北武汉人，武汉大学电子信息学院光信息科学与技术在读本科生,主要从事图像处理及超透镜成像等方面研究。

  • 中图分类号: TP391.41

Rapid extraction of line-structured light stripe in large field of view

  • School of Electronic Information,Wuhan University,Wuhan 430079,China

摘要

    摘要
  • 摘要: 在线结构光三维测量中，线结构光光条中心的提取是关键的一步。针对强背景光大视场下线结构光光条(长度约2m)中心的提取，提出了一种基于感兴趣区域(ROI)的光条中心提取方法。首先用统计的方法确定图像处理的ROI,再在此区域内用最大类间方差法进行阈值分割并用灰度重心法提取中心。 结果表明：在Visual C++ 6.0平台上，处理一帧12801024大小的线结构光条图像大约用时47ms，且光条中心提取精度高。这种提取中心的方法很好地减弱了大视场下强背景光的干扰，提高了光条中心提取速度。
    Abstract: In three-dimensional testing systems based on line-structured light, extracting the center of a line-structured light stripe quickly and accurately is a key problem. To extract the center of line-structured light with a length of 2 meter in a large field of view and strong noise background, an exaction method based on region of interest (ROI) is proposed. Firstly, ROI for image processing is defined by using statistic method, then Otsu method is used for threshold segmentation and barycenter method is used to exact the center within ROI. Experiments showed that the extracting time of a 12801024 sized picture of a line-structured light was about 47ms in Visual C ++6.0 by the proposed method and the extraction was proved accurate. The proposed method reduces the interference of strong background noise in large field of view and improves the extraction speed of line-structured light.
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    • 参考文献(1)
  • ［1］周富强,陈强,张广军.结构光光条提取的混合图像处理方法［J］.光电子·激光,2008,19(11):1534-1537.
    ZHOU Fu-qiang,CHEN Qiang,ZHANG Guang-jun.Composite image processing for centerextraction of structured light stripe［J］.Journal of Optoelectronics·laser,2008,19(11):1534-1537.(in Chinese with an English abstract)
    ［2］解则晓,辛悦向,金明,等.光条亮度对线结构光测量精度的影响［J］.光学技术,2008,34(增刊):52-54.
    XIE Ze-xiao,XIN Yue-xiang,JIN Ming，et al.Influence on the accuracy of structured-light sensors by the brightness of laserstripe［J］.Optical Technique，2008,34(Sup) :52-54.(in Chinese with an English abstract)
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    ［4］贺俊吉，张广军.结构光三维视觉检测中光条图像处理方法研究［J］.北京航空航天大学学报,2003,29(7):593-597.
    HE Jun-ji, ZHANG Guang-jun. Study on method for processing image of strip in structured-light 3D vision measuring technique［J］. Journal of Beijing University of Aeronautics and Astronautics, 2003,29(7)：593-597.(in Chinese with an English abstract)
    ［5］魏振忠,张广军.结构光直光条中心线的鲁棒性自动提取方法［J］.仪器仪表学报，2004，25(2)：244-247.
    WEI Zhen-zhong,ZHANG Guang-jun.A robust automatic method for extracting the centric line of straight structured-light stripe［J］.Chinese Journal of Scientific Instrument,2001,27(2)：189-191.(in Chinese with an English abstract)
    ［6］熊会元,宗志坚,高群,等.精确提取线结构光条纹中心方法［J］.计算机工程与应用，2009,45(10):235-237.
    XIONG Hui-yuan,ZONG Zhi-jian, GAO Qun,et al.Precise method for extracting center of structured light stripe［J］.Computer Engineering and Applications,2009,45(10):235-237.(in Chinese with an English abstract)
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  • 刊出日期:  2010-05-14

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