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首页> 外文会议>Sensors, systems, and next-generation satellites XIV >Completely optical orientation determination for an unstabilized aerial three-line camera
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Completely optical orientation determination for an unstabilized aerial three-line camera

机译：不稳定的航空三线摄像机的完全光学方向确定

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Aerial line cameras allow the fast acquisition of high-resolution images at low costs. Unfortunately the measurement of the camera's orientation with the necessary rate and precision is related with large effort, unless extensive camera stabilization is used. But also stabilization implicates high costs, weight, and power consumption. This contribution shows that it is possible to completely derive the absolute exterior orientation of an unstabilized line camera from its images and global position measurements. The presented approach is based on previous work on the determination of the relative orientation of subsequent lines using optical information from the remote sensing system. The relative orientation is used to pre-correct the line images, in which homologous points can reliably be determined using the SURF operator. Together with the position measurements these points are used to determine the absolute orientation from the relative orientations via bundle adjustment of a block of overlapping line images. The approach was tested at a flight with the DLR's RGB three-line camera MFC. To evaluate the precision of the resulting orientation the measurements of a high-end navigation system and ground control points are used.
机译：航拍摄像机可以低成本快速获取高分辨率图像。不幸的是，除非使用了广泛的相机稳定性，否则以必需的速率和精度进行相机方向的测量会付出很大的努力。但是，稳定化也意味着高成本，重量和功耗。这一贡献表明，可以从不稳定的线型摄像机的图像和全局位置测量值中完全得出其绝对外部方向。所提出的方法基于先前的工作，该工作使用来自遥感系统的光学信息来确定后续线的相对方向。相对方向用于预校正线图像，其中可以使用SURF运算符可靠地确定同源点。这些点与位置测量值一起用于通过重叠线图像块的束调整从相对方向确定绝对方向。该方法已经在DLR的RGB三线相机MFC的飞行中进行了测试。为了评估最终定向的精度，使用了高端导航系统和地面控制点的测量。

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