The Tsinghua Distorted Fingerprint Database

This database is collected for studying the problem of distorted fingerprints, including distortion detection, distortion rectification, and dense registration. The database contains totally 320 pairs of normal fingerprints and distorted fingerprints from 185 different fingers. Two pairs of them are shown below.

Data collection method

ingerprints are collected using a Fourier transform infrared spectrum (FTIR) fingerprint scanner with video acquisition functions. To generate distorted fingerprints, a volunteer firstly restrains a fingerprint with a standard posture, and then purposely adds distortion and gradually increases the distortion. After that, the acquired fingerprints are transformed into a video sequence with a frame rate of 10 frames per second and the resolution is 500 dpi. In this way, the first frame of the video can be seen as a normal fingerprint and the last frame can be seen as a corresponding distorted fingerprint. Volunteers are asked to generate 10 different distortion types as shown below.

Examples of 10 distortion types in the database

Download

Reference

Contact