| 基于预存储权值矩阵的多尺度Hough变换直线提取算法 |
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| 引用本文： | 徐胜华,朱庆,刘纪平,韩李涛,赵雪莲,张立华.基于预存储权值矩阵的多尺度Hough变换直线提取算法[J].测绘学报,2008,37(1):0-113. |
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| 作者姓名： | 徐胜华 朱庆 刘纪平 韩李涛 赵雪莲 张立华 |
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| 作者单位： | 中国测绘科学研究院政府地理信息系统研究中心,北京,100039;武汉大学,湖北武汉,430079;山东科技大学,山东青岛,266510;中国地质大学,湖北武汉,430074;海军大连舰艇学院,辽宁大连,116018 |
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| 基金项目： | 中国博士后科学基金
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国家高技术研究发展计划(863计划)
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国家自然科学基金
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新世纪优秀人才支持计划 |
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| 摘 要： | 针对Hough变换提取直线算法在速度、精度和影像大小三方面的局限,提出一种基于预存储权值矩阵的多尺度Hough变换算法。首先阐述对经典Hough变换的改进策略,对参数空间中ρ的分辨率和θ的分辨率的最佳取值也作了探讨,之后详细说明基于预存储权值矩阵的多尺度Hough变换直线提取算法。实验证明,本文提出的算法能显著提高实际影像处理的速度和直线提取的精度,特别是对比较大的影像具有计算量小、抗噪能力强等特点。
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| 关 键 词： | 多尺度Hough变换 权值矩阵 预存储 直线提取 |
| 文章编号： | 1001-1595（2008）01-0083-06 |
| 收稿时间： | 2006-12-18 |
| 修稿时间： | 2007-06-06 |
Straight Line Extraction via Multi-scale Hough Transform Based on Pre-storage Weight Matrix |
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| XU Sheng-hua,ZHU Qing,LIU Ji-ping,HAN Li-tao,ZHAO Xue-lian,ZHANG Li-hua.Straight Line Extraction via Multi-scale Hough Transform Based on Pre-storage Weight Matrix[J].Acta Geodaetica et Cartographica Sinica,2008,37(1):0-113. |
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| Authors: | XU Sheng-hua ZHU Qing LIU Ji-ping HAN Li-tao ZHAO Xue-lian ZHANG Li-hua |
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| Abstract: | Aiming at the critical time-consuming and accuracy issues of straight line extraction from large-size remote sensed imagery, after briefly reviewing the existing straight line extraction methods, a multi-scale Hough transform method based on the pre-storage weight matrix is proposed, which saves a lot of storage space, takes care of discretization errors, and avoids the abruption and conglutination of characters that are the drawbacks of the existing straight line extraction algorithms. The improvement of classical Hough transform method in detail is introduced. To optimize speed and precision, the best choice of accumulator based on image size is suggested too. The experimental results show that this algorithm is more efficient in computation and robust to noise, and is rich in feature content and accurate , especially for large-size images. |
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| Keywords: | multi-scale Hough transform weight matrix pre-storage straight line extraction |
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