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高分辨率遥感已成为矿山环境调查的重要手段。由于矿山地形起伏引起的像点位移使得常规的几何校正难以消除影像的几何变形,必须进行正射校正。与传统的正射校正相比,ERDAS LPS下的正射校正可以减少全野外布点和测图工序,自动生成内外方位元素,在同等精度条件下提高了作业效率。在实验区,根据项目的要求提出LPS模块下正射校正的流程,基于Spot5物理模型分别对全色和多波段影像进行正射校正,结果完全满足精度要求。
High-resolution remote sensing has become an important means of mine environmental investigation. Orthographic correction has to be performed because the pixel displacements caused by the mound topography can make it difficult to eliminate the geometric distortion of the image by conventional geometric correction. Compared with the traditional orthorectification, orthorectification under ERDAS LPS can reduce the field distribution and mapping procedures, automatically generate internal and external azimuth elements, and improve the working efficiency under the same precision. In the experimental area, the process of orthorectification under the LPS module was put forward according to the requirements of the project. The orthophoto correction of panchromatic and multi-band images based on the physical model of Spot5 was performed. The results fully met the requirements of accuracy.