A Novel Riesz Transforms Based Coding Scheme for Finger-Knuckle-Print Recognition

It is well recognized that in biometric systems feature extraction and representation are key considerations. Among various feature extraction and representation schemes, coding-based methods are most attractive because they have the merits of high accuracy, robustness, compactness and high matching...

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Vydáno v:2011 International Conference on Hand-Based Biometrics s. 1 - 6
Hlavní autoři: Lin Zhang, Hongyu Li, Ying Shen
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.11.2011
Témata:
Band pass filters
Encoding
Feature extraction
Gabor filters
Image coding
Transforms
ISBN:1457704919, 9781457704918
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Shrnutí:It is well recognized that in biometric systems feature extraction and representation are key considerations. Among various feature extraction and representation schemes, coding-based methods are most attractive because they have the merits of high accuracy, robustness, compactness and high matching speed, and thus they have been adopted in many different kinds of biometric systems, such as iris, palmprint, and finger-knuckle-print (FKP) systems. However, how to devise a good coding scheme for FKP recognition is still an open issue. In this paper, based on the finding that Riesz transforms can well characterize the visual patterns, we propose to encode the local patches of an FKP image by using 2nd-order Riesz transforms. Specifically, we propose a 6-bits coding scheme, namely RieszCompCode, which consists of 6 bit-planes. In RieszCompCode, three of the bit-planes are obtained by binarizing the image's responses to the three 2nd-order Riesz transforms, and the other three ones are from the classical CompCode scheme. Experiments conducted on the benchmark PolyU FKP database corroborate that the proposed RieszComopCode can surpass all the other coding schemes evaluated for FKP verification in terms of verification accuracy.
ISBN:1457704919
9781457704918
DOI:10.1109/ICHB.2011.6094323