大交角近景影像的仿射不变特征匹配方法研究Method of affine invariant feature matching for large-angle and close-range images
梁艳,盛业华,杨林
摘要(Abstract)：
针对近景数字摄影测量中大交角影像的匹配问题,本文提出了一种仿射不变特征提取与匹配方法。该方法集成Hessain-Affine和MSER特征检测算法提取一定数量的仿射不变特征区域,并将提取的椭圆形特征区域归一化处理为圆形区域,再用SIFT特征描述算子对特征区域进行描述,然后进行基于距离的粗匹配,最后在核线约束下进行精匹配。实验表明,本文的方法在对大交角近景图像进行匹配时,可以得到相对多数量的匹配对和较高的正确匹配率,具有很好的稳定性和鲁棒性。
关键词(KeyWords)： 近景图像;仿射不变;特征匹配;核线约束
基金项目(Foundation): 国家科技支撑计划项目(2012BAH35B02);; 国家自然科学基金青年项目(41101377)
作者(Author): 梁艳,盛业华,杨林
DOI: 10.16251/j.cnki.1009-2307.2013.02.023
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