主要用于图像增强，包括巴特沃兹低通滤波、巴特沃兹高通滤波、中值滤波、直方图均衡化、直方图规定化。已运行成功。-Mainly used for image enhancement, including Bartwarts low-pass filter, Butterworth high-pass filter, median filter, histogram equalization, histogram specification. Has been running successfully