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Approximate Approaches to Geometric Corrections of High Resolution Satellite Imagery

机译:高分辨率卫星影像几何校正的近似方法

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摘要

The exploitation of different non-rigorous mathematical models as opposed to the satellite rigorous models is discussed for geometric corrections and topographic/thematic maps production of high-resolution satellite imagery (HRSI). Furthermore, this paper focuses on the effects of the number of GCPs and the terrain elevation difference within the area covered by the images on the obtained ground points accuracy. From the research, it is obviously found that non-rigorous orientation and triangulation models can be used successfully in most cases for 2D rectification and 3D ground points determination without a camera model or the satellite ephemeris data. In addition, the accuracy up to the sub-pixel level in plane and about one pixel in elevation can be achieved with a modest number of GCPs.
机译:讨论了与卫星严格模型相反的不同非严格数学模型的开发,以用于高分辨率卫星图像(HRSI)的几何校正和地形图/专题图制作。此外,本文重点研究了图像所覆盖区域内GCP数量和地形高程差对获得的地面点精度的影响。从研究中可以明显地发现,在没有相机模型或卫星星历表数据的情况下,非严格的定向和三角剖分模型可以成功用于大多数情况下的2D校正和3D地面点确定。此外,使用少量的GCP即可达到平面内亚像素水平和高程约一个像素的精度。

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