| 基于星图匹配的小视场空间图像畸变校正 |
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| 引用本文： | 张淳,秦世引,赵丹培,刘尊言.基于星图匹配的小视场空间图像畸变校正[J].北京航空航天大学学报,2008,34(9):1016-1019. |
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| 作者姓名： | 张淳 秦世引 赵丹培 刘尊言 |
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| 作者单位： | 1.北京航空航天大学 自动化科学与电气工程学院, 北京 100191 |
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| 摘 要： | 小视场星载相机受发射振动和空间环境等影响,会使所拍摄的空间图像产生畸变,并且畸变模型和参数也时有变化.针对小视场空间图像所含恒星点相当稀少的特点,提出一种基于Hausdorff距离多帧星图匹配的空间图像畸变校正方法,利用恒星点作为控制点实现畸变参数的计算.针对卫星姿态漂移所造成的相机光轴指向系统误差对校正的影响,给出一种自适应补偿方法.仿真实验结果表明,该方法计算量小、精度高,能够有效抑制图像噪声和输入误差的影响.
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| 关 键 词： | 图像处理 光学畸变 星载相机 星图匹配 |
| 收稿时间： | 2007-08-07 |
Distortion correction for small-field space image based on star map matching |
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| Zhang Chun,Qin Shiyin,Zhao Danpei,Liu Zunyan.Distortion correction for small-field space image based on star map matching[J].Journal of Beijing University of Aeronautics and Astronautics,2008,34(9):1016-1019. |
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| Authors: | Zhang Chun Qin Shiyin Zhao Danpei Liu Zunyan |
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| Institution: | 1.School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China2. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | Due to the impacts from launching vibrations and complex space environment,it is inevitable to generate some distortions in images by the small-field space imaging,moreover,the distortion model and parameters may also change sometimes.In fact,there would be a few or a sparse stars in a single small-field space image,thus a kind of distortion correction method for space image was presented based on multi-frame star maps matching with Hausdorff distance.The distortion parameters were calculated by considering... |
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| Keywords: | image processing optical distortion aerial photography star map matching |
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