指纹增强的matlab实现源代码，包含多个matlab函数文件。-ridgesegment.m identifies ridge-like regions of a fingerprint image. It also normalises the intensity values of the image.

ridgeorient.m estimates the local orientation of ridges in a fingerprint.

plotridgeorient.m plots ridge orientations calculated by ridgeorient.

ridgefreq.m estimates the local ridge frequency across a fingerprint image.

freqest.m estimates the ridge frequency within a small block of an image. This is used by ridgefreq.

ridgefilter.m enhances a fingerprint image using oriented filters.