Today I read a paper titled “An Iterative Fingerprint Enhancement Algorithm Based on Accurate Determination of Orientation Flow”
The abstract is:
We describe an algorithm to enhance and binarize a fingerprint image.
The algorithm is based on accurate determination of orientation flow of the ridges of the fingerprint image by computing variance of the neighborhood pixels around a pixel in different directions.
We show that an iterative algorithm which captures the mutual interdependence of orientation flow computation, enhancement and binarization gives very good results on poor quality images.