微振动影响下的TDICCD相机图像复原方法

Image restoration method for TDICCD camera with micro vibration

随着遥感卫星成像分辨率的不断提高,微振动对空间相机成像质量的影响已不能忽视。本文主要针对微振动影响下的时间延迟积分电荷耦合器件(TDICCD)图像的复原方法进行了研究。首先,结合成像器件与目标存在相对运动时的曝光成像规律和TDICCD相机成像原理,建立了微振动下TDICCD相机的成像模型,并进行了仿真得到退化图像。然后,对面阵图像复原方法进行了介绍。最后,将面阵复原方法改进推广至TDICCD图像复原,提出了一种微振动影响下的TDICCD相机图像复原方法,并进行了仿真。恢复图像各指标均有一定提升,验证了方法的有效性。

With the steady improvement of remote sensing satellite imaging resolution,the effect of micro vibration on imaging quality of the space camera cannot be ignored.In this paper,a restoration method for imaging of Time Delayed and Integration Charge-Coupled Device(TDICCD)with micro vibration is studied.Firstly,we analyze the exposure rule and imaging principle of the TDICCD camera when the imaging device is moving relative to the target.A model for imaging of the TDICCD camera with micro vibration is established.The degraded image is obtained via simulation.Then the array image restoration method is introduced.Finally,the array image restoration method is improved and applied to TDICCD image restoration.A restoration method for TDICCD camera image with micro vibration is developed.Simulation shows improvement of all the indexes of the restored image,demonstrating the effectiveness of the proposed method.