A review of ridge counting in dermatoglyphics

摘要

This paper reviews the problem of counting ridges in a digitized fingerprint and examines an interactive software system that relieves the tedium of visual inspection and standardizes the counting procedure. The software system includes digitizer, preprocessor and counter subsystems. The preprocessor smoothes and thresholds the image. The counter defines an appropriate window around the line between two user-selected points, eliminates artifacts and counts runs of zero pixels. A preliminary experiment with a counter based on the Hough transform is also briefly discussed.