基于匀速直线运动下模糊图像复原的研究

根据运动模糊图像产生的原因及特点,文中阐述了在匀速直线运动下模糊图像退化的模型,介绍了维纳滤波复原图像的原理。由于在图像获取时模糊原因的不确定性,使得点扩散函数(PSF)具有不准确性,从而使模糊图像复原的效果不佳。针对点扩散函数的确定,利用方向微分法快速判断运动模糊方向,再利用一阶差分自相关的方法鉴定运动模糊图像的模糊尺度,从而确定点扩散函数。在确定K值时,采用K值自动估计算法。通过实验仿真表明,此方法对模糊图像复原效果良好。

Blurred Image Restoration Under Uniform Linear Motion

The reasons and characteristics of the motion blurred image are discussed, the degradation model of blurred images caused by uniform linear motion is analyzed, and the principles of image restoration Wiener filtering are introduced. Due to the uncertainty of fuzzy reason during image acquisition, the point spread function （PSF） is not precise, thus a poor fuzzy image restoration effect. The direction derivation method is used to identify the direc- tion of motion blur, then the first-order differential autocorrelation method to identify blur extent of motion blurred image, hence determining the Point Spread Function. The method of K＇s automatic estimation algorithm is employed to estimate k＇s. Experiments show that the method of fuzzy image restoration offers better effect.