| 一种光斑图像的阈值分割和光斑中心坐标的计算方法 |
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| 引用本文： | 韩亚荣,黄朝兵,钟继卫,王翔. 一种光斑图像的阈值分割和光斑中心坐标的计算方法[J]. 现代计算机, 2011, 0(22): 13-16 |
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| 作者姓名： | 韩亚荣 黄朝兵 钟继卫 王翔 |
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| 作者单位： | 武汉理工大学信息工程学院;中铁大桥局集团武汉桥梁科学研究院有限公司;桥梁结构安全与健康湖北省重点实验室 |
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| 摘 要： | 工业测量中经常需要从获取的光斑图像中提取光斑区域,计算光斑中心的坐标。针对光斑图像具有背景区域较暗且面积大,目标(光斑)区域较亮且面积小的特点,提出了一种适用于光斑图像的阈值分割方法,计算单个光斑中心坐标的重心法,以及采用连通区域标记和区域大小排序计算多个光斑中心坐标的方法。与其他阈值分割方法比较后的实验结果表明,所提出的方法可更好地分割光斑图像,与期望的人工选取的阈值最接近,计算得到的光斑中心坐标准确,且运行时间较短。
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| 关 键 词： | 阈值分割 方差 光斑中心坐标 连通区域标记 |
A Method of Thresholding Segmentation and Spot Center Coordinates Calculation for Light Spot-Image |
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| HAN Ya-rong,HUANG Chao-bing,ZHONG Ji-wei,WANG Xiang. A Method of Thresholding Segmentation and Spot Center Coordinates Calculation for Light Spot-Image[J]. Modem Computer, 2011, 0(22): 13-16 |
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| Authors: | HAN Ya-rong HUANG Chao-bing ZHONG Ji-wei WANG Xiang |
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| Affiliation: | 2,3 (1.School of Information Engineering,Wuhan University of Technology,Wuhan 430070; 2.Bridge Science Research Institute Co.,Ltd.,China Railway Major Bridge Engineering Group,Wuhan 430034; 3.Hubei Key Laboratory of Bridge Structure Safety and Health,Wuhan 430034) |
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| Abstract: | It is often asked to extract the regions of light spot from light spot-image,and calculate their center coordinates in industry measurement.The light spot-images are characterized by darkand large background,bright and small target(spot).Proposes a thresholding segmentation algorithm for light spot-image,a method to calculate a single spot coordinates using center of gravity,and presents a method to calculate the coordinates of multiple light spots using connected component labeling and sorting based on size of regions.Experimental result shows that the proposed method can obtain better performance of segmenting regions of light spot from light spot-image than other thresholding segmentation methods,and its result is closest to that of thresholding segmentation of artificial selection.The method can accurately calculate the coordinates of light spots and it has lower computation time. |
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| Keywords: | Thresholding Segmentation Variance Coordinates of Light Spots Connected Component Labeling |
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