高分辨率光学卫星立体影像RPC相对误差改正方法

A method to correct the RPC relative error of high resolution optical satellite stereo images

针对高分辨率光学卫星立体影像,采用像方空间的常数偏移量作为左右影像之间相对定位误差的改正模型,探讨了立体像对之间的RPC相对定位误差的改正方法,并通过实际的卫星影像数据进行了初步的实验分析。实验结果分析表明,该方法能够消除立体像对之间的相对误差,从而提高立体像对的内部符合精度,同时改善后续影像匹配和DSM生成的效果。该方法对于无控制点条件下高分辨率光学卫星的处理应用具有一定的实际应用价值。

Based on high resolution optical satellite stereo images,the constant offset on the image plane space is used as the correction model for relative positioning error of the right and left image.The correct method of relative positioning error between stereo image pairs RPC is discussed,and a preliminary experiment is carried out based on a variety of actual satellite image data.The experimental result shows that this method can eliminate the relative error between stereo image pairs so as to improve the in ternal coincidence accuracy of stereo image pairs,and improve the effect of subsequent processing including image matching and DSM generation.This method has practical value in the processing and application of high resolution optical satellite without con trol points.