ideal low pass in image prossesing

几个关于数字图像处理入门的程序，包括直方图均衡、中值滤波、低通及高通滤波、图像恢复等。-Several procedures on the entry of digital image processing, including histogram equalization, median filter, low-pass and high-pass filtering, image restoration.

这是关于巴特沃斯（Butterworth）高通对图像进行锐化处理，二阶巴特沃斯(Butterworth)低通滤波器进行图像平滑的matlab gui-This is about Butterworth (Butterworth) high-pass image sharpening, second order Butterworth (Butterworth) low-pass filter for image smoothing matlab gui