小波基为db的小波变换，可以提取输入图像的小波特征，低频高频的信息，然后得到特征后用于分类或识别-Wavelet transform is a wavelet transform, which can extract the wavelet features of the input image, low frequency and high frequency information, and then get the feature for classification or recogni

指纹图像基于小波变换的各种处理进行了分析、总结。图像处理包括基于小波变换的指纹图像滤波处理和基于小波的指纹图像增强处理。同时介绍指纹图像的预处理：目的是去除指纹图像中的噪音，将其转化为一幅清晰的点线图，便于提取正确的指纹特征。它分四步进行，即灰度滤波、二值化、二值去噪、细化。(The fingerprint image is analyzed and summed up based on the various processing of wavelet transform. Image pro