对二维图像进行分数阶傅里叶变换，可用于图像去噪。-Fractional Fourier transform of the image, and can be used for image denoising.

基于分数阶微分的图像增强技术，代码可以根据图像的梯度信息，更好地增强图像的高频部分，非线性地保留低频部分。-Fractional differential enhancement technology-based image code according to the gradient information of the image can better enhance the high frequency part of the image, to retain the low-freque