DocumentCode
1887454
Title
Fingerprint scanner focusing estimation by Top Sharpening Index
Author
Ferrara, Matteo ; Franco, Annalisa ; Maltoni, Davide
Author_Institution
Univ. di Bologna, Cesena
fYear
2007
fDate
10-14 Sept. 2007
Firstpage
223
Lastpage
228
Abstract
The top sharpening index (TSI) is a measure proposed to simply evaluate fingerprint image focusing. In fact, though precise guidelines have been given by NIST and FBI for the evaluation of fingerprint scanners for AFIS applications, no simple and practical techniques have yet been proposed for non-AFIS environments. TSI is based on the measurement of the steepness of the ridge/valley transitions of the fingerprint impressions. In this work a deep analysis of TSI is carried out and its relation to two well known quality indicators (MTF e IQM) is investigated to highlight analogies and differences.
Keywords
fingerprint identification; image resolution; automatic fingerprint identification system; fingerprint image focus evaluation; fingerprint scanner-focusing estimation; image quality index; top sharpening index measure; Fingerprint recognition; Focusing; Frequency measurement; Image analysis; Image matching; Image quality; NIST; Optical imaging; Quality assessment; Transfer functions;
fLanguage
English
Publisher
ieee
Conference_Titel
Image Analysis and Processing, 2007. ICIAP 2007. 14th International Conference on
Conference_Location
Modena
Print_ISBN
978-0-7695-2877-9
Type
conf
DOI
10.1109/ICIAP.2007.4362783
Filename
4362783
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