Focus-score weighted super-resolution for uncooperative iris recognition at a distance and on the move
Data(s) |
08/11/2010
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Resumo |
Uncooperative iris identification systems at a distance and on the move often suffer from poor resolution and poor focus of the captured iris images. The lack of pixel resolution and well-focused images significantly degrades the iris recognition performance. This paper proposes a new approach to incorporate the focus score into a reconstruction-based super-resolution process to generate a high resolution iris image from a low resolution and focus inconsistent video sequence of an eye. A reconstruction-based technique, which can incorporate middle and high frequency components from multiple low resolution frames into one desired super-resolved frame without introducing false high frequency components, is used. A new focus assessment approach is proposed for uncooperative iris at a distance and on the move to improve performance for variations in lighting, size and occlusion. A novel fusion scheme is then proposed to incorporate the proposed focus score into the super-resolution process. The experiments conducted on the The Multiple Biometric Grand Challenge portal database shows that our proposed approach achieves an EER of 2.1%, outperforming the existing state-of-the-art averaging signal-level fusion approach by 19.2% and the robust mean super-resolution approach by 8.7%. |
Formato |
application/pdf |
Identificador | |
Relação |
http://eprints.qut.edu.au/38118/1/c38118.pdf http://132.181.51.162/ Nguyen Thanh, Kien, Fookes, Clinton B., Sridharan, Sridha, & Denman, Simon (2010) Focus-score weighted super-resolution for uncooperative iris recognition at a distance and on the move. In 25th International Conference of Image and Vision Computing, 8-9 November 2010, Queenstown, New Zealand. |
Direitos |
Copyright 2010 Please consult the authors. |
Fonte |
Faculty of Built Environment and Engineering |
Palavras-Chave | #080100 ARTIFICIAL INTELLIGENCE AND IMAGE PROCESSING #080104 Computer Vision #080106 Image Processing #iris recognition #super-resolution #focus-score #biometrics #MBGC |
Tipo |
Conference Paper |