基于极坐标的相向运动图像模糊的递归模型

成像过程中,被摄像目标和摄像机之间的相向运动会造成图像的辐射状模糊,辐射状模糊将减小有效视场,影响成像质量.本文在扇形网格采样的基础上,利用状态空间模型模拟了退化过程,用递归方法解决了空变问题,并利用对状态空间系统求逆的方法对退化图像进行了复原.计算机模拟显示,算法简单,复原图像清晰,取得了较满意的结果.

Recursive Model of Forward Motion Blurred Image Based on Polar Coordinates

In the duration of the exposure, if the imaging system is approaching the object at a high speed,the recorded image will be blurred radially.The radial blur will diminish the effective field,affect the quality of the image obtained.The blur is space variant,and solving this problem has much significance either in theory or in practice.The restoration first resampled the blurred image with fan-shaped grids,and then simulated the degradation process with a state-space model.The state-space method overcame the space variant difficulty via a recursive way, and finally the degraded image was restored by finding the degradation system′s inverse.Computer simulation shows that the algorithm is simple,the image after processing is clear,and the radially blurred image is restored approvingly.