| 叠置分区辅助的相位编组直线提取算法 |
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| 引用本文： | 王竞雪,朱庆,张云生,胡翰.叠置分区辅助的相位编组直线提取算法[J].测绘学报,2015,44(7):768-774. |
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| 作者姓名： | 王竞雪 朱庆 张云生 胡翰 |
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| 作者单位： | 1. 辽宁工程技术大学测绘与地理科学学院, 辽宁 阜新 123000;
2. 西南交通大学高速铁路运营安全空间信息技术国家地方联合工程实验室, 四川 成都 610031;
3. 中南大学地球科学与信息物理学院, 湖南 长沙 410083;
4. 武汉大学测绘遥感信息工程国家重点实验室, 湖北 武汉 430079 |
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| 基金项目： | The National Basic Research Program of China(973 Program)(No ．2010CB731801)；The National Natural Science Foundation of China (Nos ．4110145；41201472)；The Doctoral Program Foundation of Institutions of Higher Education of China(No ．20112121120003)；The Postdoctoral Science Foundation of China (No ．2012M511413)；The Foundation of Liaoning Technical University (No ． SCDY2013010)基金项目国家973计划(2010CB731801)；国家自然科学基金(41101452；41201472)；高等学校博士学科点专项科研基金(20112121120003)；中国博士后科学基金(2012M511413)；辽宁工程技术大学校基金(SCDY2013010) |
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| 摘 要： | 针对现有相位编组方法在区域分界线处产生边缘断裂及同一分区内直线拟合难题,提出了一种叠置分区辅助的相位编组直线提取算法。该算法通过两次分区生成交叠的八分区模式,二次分区中心线与一次分区分界线相重合。首先根据初始四分区,将梯度相位相同且相互连接的边缘点编组生成直线支持区,再对其进行边缘分裂,进而拟合出对应的直线。然后将不满足一次分区条件的边缘点再依据二次分区进行直线提取,以弥补一次分区在分界线附近产生的边缘断裂。本文算法原理简单,不需要参数调整。试验验证和对比分析表明,该算法不仅能有效、准确地提取影像上的直线特征,而且对于影像上的曲线特征也能通过直线拟合得到较好的提取结果。
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| 关 键 词： | 叠置分区 相位编组 Hough变换 直线提取 直线拟合 |
| 收稿时间： | 2014-05-05 |
| 修稿时间： | 2014-09-12 |
Phase Grouping Line Extraction Algorithm Using Overl apped Partition |
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| WANG Jingxue,ZHU Qing,ZHANG Yunsheng,HU Han.Phase Grouping Line Extraction Algorithm Using Overl apped Partition[J].Acta Geodaetica et Cartographica Sinica,2015,44(7):768-774. |
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| Authors: | WANG Jingxue ZHU Qing ZHANG Yunsheng HU Han |
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| Institution: | 1. School of Geomatics, Liaoning Technical University, Fuxin 123000, China;
2. National-local Joint Engineering Laboratory of Spatial Information Technology for High-speed Railway Running Safety, Southwest Jiaotong University, Chengdu 610031, China;
3. School of Geomatics and Info-physics, Central South University, Changsha 410083, China;
4. State Key Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China |
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| Abstract: | Aiming at solving the problem of fracture at the discontinuities area and the challenges of line fitting in each partition ,an innovative line extraction algorithm is proposed based on phase grouping using overl apped partition .The proposed algorithm adopted dual partition steps ,which will generate overl apped eight partitions .Between the two steps ,the middle axis in the first step coincides with the border lines in the other step .Firstly ,the connected edge points that share the same phase gradients are merged into the line candidates ,and fitted into line segments .Then to remedy the break lines at the border areas ,the break segments in the second partition steps are refitted .The proposed algorithm is robust and does not need any parameter tuning .Experiments with various datasets have confirmed that the method is not only capable of handling the linear features ,but also powerful enough in handling the curve features . |
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| Keywords: | overl apped-partition phase grouping Hough transform line extraction line fitting |
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