在“空间域”文件中，函数有很多，包括正弦变换均衡，平滑线性滤波，锐化滤波，锐化滤波边缘增强，频域指数高/低通滤波，巴特沃斯滤波，文件名为相应拼音。-In the "space domain" file, functions, there are many, including sine transform equilibrium, smooth linear filter, sharpen filter, sharpen filter strengthen edge, the frequency

完整的汉字拼音声母检测工程，下载即可用，主要用于文字检索-Pinyin Initials testing works, the download can be used mainly for text retrieval