大倾斜航空摄影图像地理坐标赋予方法

为了获取大倾斜航空摄影图像中目标点的位置,提出了参照基准图像,基于改进的6参数仿射变换模型进行几何纠正的方法。该方法对基准图像和大倾斜航空摄影图像分别进行角点检测,然后进行配对处理,配对后的相邻角点进行分组后,构建Delaunay三角网,在局部范围内分别进行仿射变换。实验表明,对大倾斜航空摄影图像赋予地理坐标能够达到较好的结果。

Geographic Coordinates Assignment Method of Bigger Oblique Aerial Photography

Bigger oblique aerial photography have no geographic coordinates and serious geometric distortion.For getting target position of oblique aerial photography,we established 6-parameters affine transformation model to make geometry rectification based on image of reference.By using corner point detection with image of reference and oblique aerial photography for matching,two images can make affine transformation in part of image after neighbor corner point in groups and building delaunay triangulation network.The test proved that bigger oblique aerial photography can be assigned well with geographic coordinates using this method.