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针对传统遥感软件处理影像数据正射纠正时控制点精度不高的问题,提出了一种快速、精确正射纠正的改进方案。该方法首先利用PCI、ArcGIS与ERDAS软件相兼容的特点,通过PCI影像处理软件对实验区阳原县高分辨率遥感卫星影像CBERDS-02C进行正射纠正,得出控制点精度残差结果;然后利用ArcGIS软件对纠正后影像进行精度改进;最后在ERDAS影像处理软件中选取同名点对影像纠正精度改进后效果进行验证。实验结果表明:通过对比分析精度改善前后控制点残差结果,在ArcGIS软件中对精度改进是切实可行的。
Aiming at the problem that the accuracy of control points is not high when the traditional remote sensing software processes the orthographic correction of image data, an improved scheme of fast and accurate orthorectification is proposed. The method first utilizes the features of PCI, ArcGIS and ERDAS compatible software, through the orthographic correction of high resolution remote sensing satellite image CBERDS-02C in Yangyuan County of experimental area by PCI image processing software, and then obtains the result of the control point precision residual; then The ArcGIS software was used to improve the accuracy of the corrected image. Finally, the same point in the ERDAS image processing software was selected to verify the correctness of the corrected image. The experimental results show that it is practicable to improve the accuracy in ArcGIS by comparing the accuracy of the control points to improve the results of the control points before and after.