MOUNTING CALIBRATION OF A MULTI-VIEW CAMERA SYSTEM ON A UAV PLATFORM
MOUNTING CALIBRATION OF A MULTI-VIEW CAMERA SYSTEM ON A UAV PLATFORM
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DOI：
10.5194/isprs-annals-v-1-2021-97-2021
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
M. Mohammadi;A. Khami;F. Rottensteiner;I. Neumann;C. Heipke
中科院分区：
文献类型：
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作者：
M. Mohammadi;A. Khami;F. Rottensteiner;I. Neumann;C. Heipke
抽象。多视角相机系统越来越频繁地用于近景摄影测量、工程大地测量和自主导航中的应用，因为它们可以覆盖大部分环境，并且比激光扫描仪等替代传感器便宜得多。在许多情况下，相机不具有重叠的视场。在本文中，我们报告这样一个系统安装在一个刚性的铝平台上的发展，并专注于其几何系统校准。我们提出了一种基于光束法平差的多摄像机系统外方位估计方法。我们使用一个静态的环境与地面控制点，这是相关的平台通过激光跟踪仪。在实验部分，可以达到的精度和部分准确性，在不同的情况下进行了调查。虽然我们表明平台的精度潜力非常高，但安装校准参数不一定精确到足以在校准后用作恒定值。但是，可以通过使用这些参数作为观测值并在工作中对其进行改进来减轻此缺点。
Abstract. Multi-view camera systems are used more and more frequently for applications in close-range photogrammetry, engineering geodesy and autonomous navigation, since they can cover a large portion of the environment and are considerably cheaper than alternative sensors such as laser scanners. In many cases, the cameras do not have overlapping fields of view. In this paper, we report on the development of such a system mounted on a rigid aluminium platform, and focus on its geometric system calibration. We present an approach for estimating the exterior orientation of such a multi-camera system based on bundle adjustment. We use a static environment with ground control points, which are related to the platform via a laser tracker. In the experimental part, the precision and partly accuracy that can be achieved in different scenarios is investigated. While we show that the accuracy potential of the platform is very high, the mounting calibration parameters are not necessarily precise enough to be used as constant values after calibration. However, this disadvantage can be mitigated by using those parameters as observations and refining them on-the-job.