|
Fingerprint Recompression After Segmentation
May 2008
Margaret A. Lepley, The MITRE Corporation
ABSTRACT
With the increasing availability and usage of flat multi-finger collection systems, fingerprint
identification is increasingly being performed from segmented data and frequently these
segmented areas are recompressed to generate a 10-print file with separate records for each
finger. Since recompression often incurs further loss, the amount and type of recompression
can impact the extracted features and match scores. In this study several different WSQ-based
cropping recompression alternatives are compared to each other by match score
impact, crop and recompression speed, and output file size.
Two new WSQ recompression methods one aimed at high quality and one at very high speed
are briefly described and compared with more typical WSQ 15:1 recompression. The study
indicates that both of the new methods maintain better match quality than WSQ 15:1.
Additional Search Keywords
fingerprint, WSQ, recompression, segmentation, speed, quality
|
