Traditional fingerprint images are popularly acquired by pressing or rolling one’s fingers against the sensors surface which can be from silicon, glass or the polymer. Due to sensor noise, improper placement of fingers and skin deformation, the resulting fingerprint images are therefore often distorted and/or degraded in their quality. The contactless fingerprint acquisition technologies have been introduced for better hygiene, security and to overcome these limitations. More and more fingerprint identification systems are required to accurately match the fingerprint images from different kinds of fingerprint sensors. It’s important to investigate fingerprint sensor interoperability between the contact-based and contactless fingerprint sensors.
A new fingerprints database acquiring from 300 different clients consists of 1800 2D contactless fingerprint images and corresponding 1800 2D contact-based fingerprints is developed and made available publicly to promote further research efforts in this area. As detailed in reference , database was acquired during September 2014 to February 2016 in our university.
Image samples from the Contactless 2D fingerprints and corresponding contact-based 2D Fingerprints
The database is made available freely for the researchers from January 2017 onwards. Interested researchers should follow following steps to acquire the 'The Hong Kong Polytechnic University Contactless to Contact-based Fingerprint Images Database Version 1.0’.
All the rights of the The Hong Kong Polytechnic University Contactless 2D to Contact-based 2D Fingerprint Images Database Version 1.0 are reserved and commercial use/distribution of this database is strictly prohibited. All the technical reports and papers that report experimental results from this database should provide due acknowledgement and reference. The reference should appear as 'The Hong Kong Polytechnic University Contactless 2D to Contact-based 2D Fingerprint Images Database Version 1.0. Questions regarding this database can be directed to Ajay.Kumar@polyu.edu.hk.
 Chenhao Lin, Ajay Kumar, “Matching Contactless and Contact-based Conventional Fingerprint Images for Biometrics Identification”, IEEE Transactions on Image Processing, vol. 27, pp. 2008-2021, April 2018.
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