1. ANSI/NIST-ITL 1-2007 Fingerprint Standard –
http://fingerprint.nist.gov/standard/index.html
2. Maltoni, D. et al.: Handbook of fingerprint recognition. Springer (2003)
3. Xia, X., O’Gorman, L.: Innovation in fingerprint capture devices. Pattern Recognit. 36, 361–369 (2003)
4. Hara, M.: Image Density Conversion Method, Image Enhancement Processor, and Program Thereof (USP 20080050030A1 – Pending)
5. Hong, L et al. Fingerprint image enhancement: Algorithm and performance evaluation. IEEE Trans. Pattern Anal. Mach. Intell. 20, 777–789(1998)