频率域图像处理ppt，介绍了各种滤波技术，如非锐化掩模技术的频域实现等

频率域图像处理ppt，介绍了各种滤波技术，如非锐化掩模技术的频域实现等-Frequency domain image processing ppt, introduced a variety of filtering techniques, such as non-unsharp masking techniques to achieve, such as frequency domain