| 目标轮廓直线特征的高精度提取 |
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| 引用本文： | 李彩林,郭宝云,李畅.目标轮廓直线特征的高精度提取[J].测绘学报,2011,40(1):66-70. |
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| 作者姓名： | 李彩林 郭宝云 李畅 |
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| 作者单位： | 1. 武汉大学遥感信息工程学院;2. 武汉大学; |
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| 基金项目： | 国家自然科学基金(40771177,41071233,41071293) |
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| 摘 要： | 针对小型物体高精度量测的要求,提出一种结合精确单点定位方法和基于分裂的最小距离误差线段逼近法的高精度轮廓直线特征提取算法.通过利用直线特征精确逼近目标的轮廓,搜索相邻直线段并计算交点,从而实现轮廓分割点的精确定位,进而为基于轮廓的三维量测与重建提供高精度的直线特征数据.与其他方法(如最小二乘模板匹配、抛物线拟合等)相比...
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| 关 键 词： | 轮廓特征提取 线扩散函数 单点定位 链码分割 直线精确定位 |
| 收稿时间： | 2009-12-03 |
| 修稿时间： | 2010-07-20 |
The High-accurate Extraction of Line Features of Object Contour |
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| LI Cailin,GUO Baoyun,LI Chang.The High-accurate Extraction of Line Features of Object Contour[J].Acta Geodaetica et Cartographica Sinica,2011,40(1):66-70. |
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| Authors: | LI Cailin GUO Baoyun LI Chang |
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| Institution: | LI Cailin1,GUO Baoyun1,LI Chang21.School of Remote Sensing and Information Engineering,Wuhan University,Wuhan 430079,China,2.College of Urban and Environmental Science,Huazhong Normal University |
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| Abstract: | A high-accurate extraction algorithm of line features of object contour is proposed in this paper,which combines the method of exact positioning of single point and the algorithm of line segment approximation with minimum-distance error.First object contour can be approximated exactly by linear feature.Then we search the adjacent line segment and compute the intersection point between them.At last,we realized the exact positioning of contour feature point and provided exact line segment data for 3D measurin... |
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| Keywords: | contour feature extraction line diffusion function single-point position chain code partition precise position of line |
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