一种改进的人工标记点匹配方法

摘要

Aiming pt the particular case that multiple cameras and multiple non-matching point was located in the same plane in digital close-range photogrammetry,this paper analyzed the reason of error matching caused by using traditional method of epipolar constraint, and proposed an improved matching method of artificial markers. It determined the initial matching relationship by the traditional method. Then,eliminated error matching relationship based on the normal direction which was calculated by the image contour of markers. Experimental results show that the error matching relationship can be eliminated effectively by the method,and the matching accuracy is improved.%针对数字近景摄影测量中多摄像机与多个待匹配点处于同一平面内的特殊情况,分析了利用外极线约束的传统匹配方法匹配错误的原因,并提出了一种改进的多图人工标记点匹配方法.该方法利用基于外极线约束的传统匹配方法确定初始匹配关系,并根据图像上标记物轮廓计算出标记物空间法向,然后利用法向过滤准则剔除错误的匹配关系.实验结果表明,该方法能够有效地剔除利用外极线约束的传统匹配方法中错误的匹配关系,提高了匹配准确度.