Multi-Spectral Vision Processing for the ExoMars 2018 Mission
Multi-Spectral Vision Processing for the ExoMars 2018 Mission
复制标题
ExoMars 2018 任务的多光谱视觉处理
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
G. Paar
中科院分区：
文献类型：
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作者：
D. Barnes;M. Wilding;M. Gunn;S. Pugh;L. Tyler;A. Coates;A. Griffiths;C. Cousins;N. Schmitz;A. Bauer;G. Paar
辐射校准是科学相机正在进行的一项关键活动，这些相机是ESA/NASA 2018 ExoMars使命全景相机（PanCam）仪器的一部分。PanCam仪器被设计成火星探测器的“眼睛”，配备了两台来自MSSL的广角多光谱相机（WAC）和一台来自DLR的可聚焦高分辨率相机（HRC）。为了在ExoMars使命中发挥其科学作用，PanCam必须能够生成地形反射光谱，以帮助识别火星表面的矿物学，并能够生成火星环境的真彩色图像。这些图像将由地球上的科学家仔细检查，以寻找可能的外星生物学线索。阿伯里斯特威斯大学（Au）负责提供PanCam校准目标（PCT），这是PanCam仪器科学操作的重要组成部分。其目的是在ExoMars使命期间进行辐射校准并支持PanCam仪器的几何校准检查。与其他飞往火星的相机校准目标不同，PCT目标区域由彩色玻璃制成。本文介绍了PCT的设计，早期建设和测试过程中所进行的工作，以及已设计和实施的基线算法处理多光谱PanCam图像的结果。
Radiometric calibration is a key activity being undertaken for the science cameras which are part of the Panoramic Camera (PanCam) instrument for the ESA/NASA 2018 ExoMars mission. The PanCam instrument is designed to be the ‘eyes’ of the Mars rover and is equipped with two wide angle multi-spectral cameras (WACs) from MSSL, and a focusable High Resolution Camera (HRC) from DLR. To achieve its science role within the ExoMars mission, the PanCam must be able to generate terrain reflectance spectra to help identify the mineralogy of the Martian surface, and able to generate true-colour images of the Martian environment. These images will be scrutinised by scientists back on Earth for possible exobiology clues. Aberystwyth University (AU) is responsible for delivering the PanCam Calibration Target (PCT) which is an essential component for the science operations of the PanCam instrument. Its purpose is to allow radiometric calibration and to support geometric calibration check-out of the PanCam instrument during the ExoMars mission. Unlike other camera calibration targets flown to Mars, the PCT target regions are being made from stained glass. The paper describes the work undertaken during the design, early build and testing of the PCT, together with results from the baseline algorithms that have been designed and implemented to process the multi-spectral PanCam images.