基于频谱分析的匀速运动模糊图像模糊方向识别

点扩展函数的设置是图像复原中的关键问题，对于匀速直线运动模糊图像，运动方向和模糊长度决定了点扩展函数。根据运动模糊图像和原始图像在频谱上存在的对应关系，即运动模糊图像频谱存在着对应于传递函数零点的暗条纹，提出对运动模糊图像，通过二维傅里叶变换、二值化以及Radon变换检测运动模糊图像频谱图上暗条纹的方向和位置，来实现运动方向测量的方法。用该方法对模糊图像进行检测，模糊方向的识别精度小于1°。实验证明该方法可以实现平面内任意方向运动的测量。

Identification of Motion Blur Direction from Motion Blurred Image by Spectrum Analysis

Setting the point spread function of motion blurred image is the key problem in the image restoration.For uniform linear motion blurred images,the blur direction and length determine the point spread function.The identification of blur direction in motion blurred images is one of the most important steps of image restoration.There are sets of negative ripples corresponding to zero values of the transfer function,which can be found on spectrums of motion blurred images.Based on this spectrum relationship bet...