张云生, 朱庆, 吴波, 邹峥嵘. 一种基于三角网约束的立体影像线特征多级匹配方法[J]. 武汉大学学报 ( 信息科学版), 2013, 38(5): 522-527.
引用本文: 张云生, 朱庆, 吴波, 邹峥嵘. 一种基于三角网约束的立体影像线特征多级匹配方法[J]. 武汉大学学报 ( 信息科学版), 2013, 38(5): 522-527.
ZHANG Yunsheng, ZHU Qing, WU Bo, ZOU Zhengrong. A Hierarchical Stereo Line Matching Method Based on a Triangle Constraint[J]. Geomatics and Information Science of Wuhan University, 2013, 38(5): 522-527.
Citation: ZHANG Yunsheng, ZHU Qing, WU Bo, ZOU Zhengrong. A Hierarchical Stereo Line Matching Method Based on a Triangle Constraint[J]. Geomatics and Information Science of Wuhan University, 2013, 38(5): 522-527.

一种基于三角网约束的立体影像线特征多级匹配方法

A Hierarchical Stereo Line Matching Method Based on a Triangle Constraint

  • 摘要: 针对直线匹配可靠性问题,提出了一种基于三角网约束的立体影像线特征多级匹配方法。首先采用SURF算法匹配一部分可靠的种子点,利用这些种子点约束其邻域内的直线匹配;然后,将这些种子点构建三角网,利用三角网约束直线匹配的搜索范围,进行三角网约束下的线 线匹配;再次,在三角网的约束下,进行线 面匹配。为了提高直线匹配相似性测度的可区分性,提出了基于移动窗口的自适应直线相关方法,不仅在表面非连续区域能取得可靠匹配,在纹理缺乏区域也能取得可靠匹配结果。利用具有典型纹理特征的近景影像和航空影像进行了试验分析,结果表明,本方法能获取可靠的直线匹配结果。

     

    Abstract: A hierarchical stereo line matching method based on a triangle constraint is proposed to enhance the line matching reliability. The method includes three steps where the first step is to match seed points based on SURF algorithm. The seed points are then used to constrain the nearby line matching. The second step is to triangulate the seed points to reduce the search range of the remaining line matching. A line line matching process is then performed. The third step is a line area matching process under the constraint of the triangles. To reduce the ambiguity of line matching, a shiftable self adaptive line cross correlation method is proposed for discontinuous surfaces and with poor textural information. Experimental studies are carried out with typical close range stereo images and aerial stereo images, and the results reveal that the proposed method is reliable for line matching.

     

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