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中文摘要：
提出了一种对航天时间延时积分（TDI）电荷耦合器件（CCD）相机振动移变降质图像进行恢复的方法。首先介绍了TDI—CCD的工作原理及其对振动的敏感性，建立了TDI—CcD振动降质的点扩散函数（PSF）模型，指出振动对TDI—CCD相机的降质过程是空间移变的；然后提出了基于快速CCD的振动检测方法，在振动检测技术中，利用了一种改进的灰度投影算法计算振动参量；最后提出对降质图像进行逐行恢复的方法，并对模糊图像进行了恢复。分别对匀速直线运动和正弦振动进行了实验。用峰值信噪比（PSNR）作为评价标准，对恢复图像进行了评价。结果表明，匀速直线运动模糊图像的PSNR为33．98dB，恢复后其PSNR为41．14dB；正弦振动模糊图像的PSNR为39．68dB，恢复后其PSNR为45．12dB。
英文摘要：
A method on restoration of spaceborne time delay and integration charge coupled divice （TDI- CCD） camera shift-variant blurred image is proposed. First, the principle of a TDI-CCD is introduced, and the characteristic of （TDI-CCD） is it is especially sensitive to vibration. The model of the point spread function （PSF） of the motion blur process is set up,and the conclusion that the blur process of a TDI-CCD is space shift-variant is reached. Then, the vibration detecting method based on high-speed CCD and an improved gray projection algorithm are proposed to detect the parameters of vibration. Fi- nally,the line by line image restoration method is used to restore the motion blurred image. The experiments are set up on liner motion and sine vibration, respectively. The results are evaluated by peak signal to noise ratio （PSNR）. Aim at the liner motion,the PSNR of the blurred image is 33.98 dB, and the PSNR of the restored image is 41.14 dB. Aim at the sine vibration,the PSNR of the blurred image is 39, 68 dB,and the PSNR of the restored image is 45.12 dB.
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