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耿迅, 徐青. 一种线阵推扫式行星遥感影像摄影测量快速处理方法[J]. 深空探测学报(中英文), 2022, 9(3): 348-356. DOI: 10.15982/j.issn.2096-9287.2022.20210002
引用本文: 耿迅, 徐青. 一种线阵推扫式行星遥感影像摄影测量快速处理方法[J]. 深空探测学报(中英文), 2022, 9(3): 348-356. DOI: 10.15982/j.issn.2096-9287.2022.20210002
GENG Xun, XU Qing. A Fast Photogrammetric Processing Method for Linear Pushbroom Planetary Remote Sensing Images[J]. Journal of Deep Space Exploration, 2022, 9(3): 348-356. DOI: 10.15982/j.issn.2096-9287.2022.20210002
Citation: GENG Xun, XU Qing. A Fast Photogrammetric Processing Method for Linear Pushbroom Planetary Remote Sensing Images[J]. Journal of Deep Space Exploration, 2022, 9(3): 348-356. DOI: 10.15982/j.issn.2096-9287.2022.20210002

一种线阵推扫式行星遥感影像摄影测量快速处理方法

A Fast Photogrammetric Processing Method for Linear Pushbroom Planetary Remote Sensing Images

  • 摘要: 对地外天体表面的遥感影像进行摄影测量处理是制作行星制图产品的主要技术途径。然而,现有行星摄影测量方法在处理长条带线阵推扫式遥感影像时存在效率较低与适用性有限等问题。设计了基于快速几何纠正的线阵推扫式行星遥感影像的摄影测量处理方法并自主研发了相应的软件模块,在建立线阵影像严密几何模型的基础上,利用快速反投影算法进行几何纠正,并开展多线程程序设计进一步提升正射影像图生成效率。首先在快速几何纠正生成的近似正射影像上进行匹配获取连接点,然后再利用严密几何模型将连接点转换至原始影像空间,有效地解决了大数据量线阵推扫式行星遥感影像的连接点控制网构建问题。利用月球侦察轨道器NAC影像与火星快车HRSC影像开展试验验证,处理生成了“嫦娥四号”(Chang'E-4)着陆区与Mars 2020预选着陆区局部区域的正射影像图与数字高程模型,与USGS ISIS软件相比,所提方法显著提升了线阵推扫式行星遥感影像的处理效率。

     

    Abstract: Planetary photogrammetry is widely used to derive the mapping products of extraterrestrial planets. However, the existing planetary photogrammetric methods exhibit low efficiency and poor applicability for long strip linear pushbroom planetary images. We developed photogrammetric processing method as well as corresponding software modules for linear pushbroom planetary images based on fast geometric rectification. Based on the rigorous sensor model of linear pushbroom planetary images, the fast back projection algorithm is used for orthophotos rectification, and multi-threaded programming technique is also used to further improve the computational efficiency. To derive control network for linear pushbroom planetary images with large amount of data, we first conduct image matching on approximate orthophotos that derived from fast geometric rectification to acquire tie points, and then convert the matched tie points into original image space using rigorous sensor model. Experiments were conducted using Lunar Reconnaissance Orbiter (LRO) Narrow Angle Camera (NAC) and Mars Express (MEX) Hight Resolution Stereo Camera (HRSC) images, and the corresponding DOMs and DEMs were derived. Compared with the planetary image processing software USGS ISIS, the developed method significantly improves the processing efficiency of linear pushbroom planetary images.

     

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