| 油田清洁生产审核实践与探索 |
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| 引用本文： | 李增强,岩征,张鹏.油田清洁生产审核实践与探索[J].城市勘测,2014,24(4):5-7. |
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| 作者姓名： | 李增强 岩征 张鹏 |
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| 作者单位： | [1]武汉大学测绘学院,湖北武汉430079; [2]精密工程与工业测量国家测绘地理信息局重点实验室,湖北武汉430079 |
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| 摘 要： | 针对激光准直法测定高层建筑周日变化中激光光斑中心位置的高精度定位问题,提出了一种适用于小面积比的自适应阈值图像二值化方法。实验表明：该方法与现有的激光光斑中心定位方法相比,具有定位精度高、处理速度快得特点。
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| 关 键 词： | 周日变化监测 自适应阈值 椭圆拟合 中心定位 |
An Adaptive Threshold Laser Spot Center Positioning Method |
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| Affiliation: | Xu Yarning, Shu Jinfang , An Dongdong ( 1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China ; 2. Key Laboratory of Precise Engi- neering ＆ Industry Surveying, National Administration of Surveying and Mapping and Geoinformation, Wuhan University, Wuhan 430079, China) |
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| Abstract: | A method of laser alignment monitoring diurnal variation of the laser spot center location problem, we propose a smaller area than for the adaptive threshold image binary method, and then extract the laser binary image edge, use least-squares ellipse fitting to determine the center coordinates of the laser spot. By this method the experimental data with the existing methods for positioning the laser spot center compared and the results show that the proposed method has good accuracy and high processing efficiency of the time. |
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| Keywords: | sunday change monitoring adaptive threshold ellipse fitting center positioning |
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