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

#显示直方图； #对图像进行指数或者对数变换； #直方图均衡化； #局部（ROI）均衡化，把均衡化后的局部图像显示到原图像； #按照某种函数进行直方图匹配。-# Show the histogram # of images or the number of index change # histogram equalization # local (ROI) equalization to balance after a partial image display

兴趣区域选取，扩展兴趣区选取的功能，不必局限于圆形或方形轮廓落形态-Most ROI Drawing Tools limit you to either drawing a circular ROI or a rectangular ROI perpendicular to the X-Y axis. ROI Draw s primary purpose is to expand upon the drawing of rectangular ROI s by allowing you to d

用于图像处理中的感兴趣区域的提取，以便对物体进行识别-extract the ROI in image process