Unsupervised detection of non-iris occlusions

0444723 - ÚTIA 2016 RIV NL eng J - Journal Article
Haindl, Michal - Krupička, Mikuláš
Unsupervised detection of non-iris occlusions.
Pattern Recognition Letters. Roč. 57, č. 5 (2015), s. 60-65. ISSN 0167-8655. E-ISSN 1872-7344
R&D Projects: GA ČR(CZ) GA14-10911S
Institutional support: RVO:67985556
Keywords : Iris recognition * Color * Markov random field * Texture
Subject RIV: BD - Theory of Information
Impact factor: 1.586, year: 2015
http://library.utia.cas.cz/separaty/2015/RO/haindl-0444723.pdf

This paper presents a fast precise unsupervised iris defects detection method based on the underlying multispectral spatial probabilistic iris textural model and adaptive thresholding applied to demanding high resolution mobile device measurements. The accurate detection of iris eyelids and reflections is the prerequisite for the accurate iris recognition, both in near-infrared or visible spectrum measurements. The model adaptively learns its parameters on the iris texture part and subsequently checks for iris reflections using the recursive prediction analysis. The method is developed for color eye images from unconstrained mobile devices but it was also successfully tested on the UBIRIS v2 eye database. Our method ranked first from the 97+1 recent Noisy Iris Challenge Evaluation contest alternative methods on this large color iris database using the exact contest data and methodology.
Permanent Link: http://hdl.handle.net/11104/0247504