hh.sePublikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
A Survey of Super-Resolution in Iris Biometrics with Evaluation of Dictionary-Learning
Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).ORCID-id: 0000-0002-1400-346X
University of Malta, Msida, Malta.
Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).ORCID-id: 0000-0002-4929-1262
Universidad Autonoma de Madrid, Madrid, Spain.
Vise andre og tillknytning
2019 (engelsk)Inngår i: IEEE Access, E-ISSN 2169-3536, Vol. 7, s. 6519-6544Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The lack of resolution has a negative impact on the performance of image-based biometrics. While many generic super-resolution methods have been proposed to restore low-resolution images, they usually aim to enhance their visual appearance. However, an overall visual enhancement of biometric images does not necessarily correlate with a better recognition performance. Reconstruction approaches need thus to incorporate specific information from the target biometric modality to effectively improve recognition performance. This paper presents a comprehensive survey of iris super-resolution approaches proposed in the literature. We have also adapted an Eigen-patches reconstruction method based on PCA Eigentransformation of local image patches. The structure of the iris is exploited by building a patch-position dependent dictionary. In addition, image patches are restored separately, having their own reconstruction weights. This allows the solution to be locally optimized, helping to preserve local information. To evaluate the algorithm, we degraded high-resolution images from the CASIA Interval V3 database. Different restorations were considered, with 15 × 15 pixels being the smallest resolution evaluated. To the best of our knowledge, this is among the smallest resolutions employed in the literature. The experimental framework is complemented with six publicly available iris comparators, which were used to carry out biometric verification and identification experiments. Experimental results show that the proposed method significantly outperforms both bilinear and bicubic interpolation at very low-resolution. The performance of a number of comparators attain an impressive Equal Error Rate as low as 5%, and a Top-1 accuracy of 77-84% when considering iris images of only 15 × 15 pixels. These results clearly demonstrate the benefit of using trained super-resolution techniques to improve the quality of iris images prior to matching. © 2018, Emerald Publishing Limited.

sted, utgiver, år, opplag, sider
Piscataway, NJ: IEEE, 2019. Vol. 7, s. 6519-6544
Emneord [en]
Iris hallucination, iris recognition, eigen-patch, super-resolution, PCA
HSV kategori
Identifikatorer
URN: urn:nbn:se:hh:diva-38659DOI: 10.1109/ACCESS.2018.2889395Scopus ID: 2-s2.0-85059007584OAI: oai:DiVA.org:hh-38659DiVA, id: diva2:1273284
Forskningsfinansiär
Swedish Research Council, 2016-03497EU, FP7, Seventh Framework Programme, COST IC1106Knowledge Foundation, SIDUS-AIRKnowledge Foundation, CAISRVINNOVA, 2018-00472Tilgjengelig fra: 2018-12-20 Laget: 2018-12-20 Sist oppdatert: 2019-01-25bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekstScopus

Personposter BETA

Alonso-Fernandez, FernandoBigun, Josef

Søk i DiVA

Av forfatter/redaktør
Alonso-Fernandez, FernandoBigun, Josef
Av organisasjonen
I samme tidsskrift
IEEE Access

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 230 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf