提取纹理特征，现在最流行的是gabor小波变换，它的集具有一定的方向性，和纹理特征吻合,Extraction of texture features, and now the most popular is the gabor wavelet transform, it sets a certain direction, and texture characteristics of anastomosis

小波变换，主要功能是实现图像纹理的提取。-Wavelet transform, the main function is to achieve the extraction of image texture.

A novel texture-based Automatic Fingerprint Authentication System (AFAS) is proposed. A fingerprint image is preprocessed to enhance the image by Short Time Fourier Transform (STFT) analysis. Then, three sets of invariant moment features, as a kind o