张智, 孙权森, 林栩凌, 韩明亮. 基于临近时空帧间信息的空间目标图像增强方法[J]. 红外与激光工程, 2019, 48(S1): 193-197. DOI: 10.3788/IRLA201948.S128004
引用本文: 张智, 孙权森, 林栩凌, 韩明亮. 基于临近时空帧间信息的空间目标图像增强方法[J]. 红外与激光工程, 2019, 48(S1): 193-197. DOI: 10.3788/IRLA201948.S128004
Zhang Zhi, Sun Quansen, Lin Xuling, Han Mingliang. Image enhancement for space object based on information between adjacent spatial-temporal frames[J]. Infrared and Laser Engineering, 2019, 48(S1): 193-197. DOI: 10.3788/IRLA201948.S128004
Citation: Zhang Zhi, Sun Quansen, Lin Xuling, Han Mingliang. Image enhancement for space object based on information between adjacent spatial-temporal frames[J]. Infrared and Laser Engineering, 2019, 48(S1): 193-197. DOI: 10.3788/IRLA201948.S128004

基于临近时空帧间信息的空间目标图像增强方法

Image enhancement for space object based on information between adjacent spatial-temporal frames

  • 摘要: 在轨空间目标观测阶段,空间光学相机的成像性能通常都会受到很多因素的影响。一般包括平台运动、姿态变化、颤振、偏流角等方面。仅依赖地面测试得到的参数,如采用地面测到的红外CCD相机的点响应函数进行图像增强,已经不能有效改善图像质量了。因此,提出了一种结合相邻时空帧信息的用于空间目标观测的仿真和图像增强方法。对多次曝光时间内的系统动态点响应函数进行建模、仿真。同时,提出一种基于相邻时空帧间相关信息频域范数优化的图像增强方法。实验中对空间运动目标红外观测系统的动态点响应函数进行仿真。通过实验结果表明:与传统方法相比,所提方法处理后结果的各项质量评价指标更高,处理后的图像更清晰。

     

    Abstract: Usually the ability of the space optical camera is degraded by many factors during operation on orbit for the space object observation. The result is induced by variation of some prior parameters such as platform motion, attitude variation, jitter and drift angle during operation on orbit. So it is not satisfying to improve the image quality, only by using the parameters measured on the ground test such as the point response function of the infrared CCD camera. The simulation for the space object observation of the on-board imaging system and the enhancement is proposed here, combining with the information between adjacent spatial and temporal frames. The dynamic model is formulated, representing the characteristic of point response function during multiple exposure times. Furthermore, the enhancement algorithm is proposed based on the correlated information between two adjacent spatial and temporal frames. The norm optimization method is used in the frequency domain. The dynamic point response function of the space object observation system is simulated in the experiment. And the detecting spectrum range is mid-Infrared. The processed result is clear and sharp by the proposed method. The experimental result shows that the proposed method is better than the conventional methods.

     

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