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ICIP
2009
IEEE
13 years 2 months ago
Quality-based dynamic threshold for iris matching
Current iris recognition systems usually regard poor quality iris images useless since defocused or partially occluded iris images may cause false acceptance. However, such a stra...
Wenbo Dong, Zhenan Sun, Tieniu Tan, Zhuoshi Wei
PAMI
2007
110views more  PAMI 2007»
13 years 4 months ago
Toward Noncooperative Iris Recognition: A Classification Approach Using Multiple Signatures
—This paper focus on noncooperative iris recognition, i.e., the capture of iris images at large distances, under less controlled lighting conditions, and without active participa...
Hugo Proença, Luís A. Alexandre
BIOID
2008
190views Biometrics» more  BIOID 2008»
13 years 6 months ago
Direct Attacks Using Fake Images in Iris Verification
Abstract. In this contribution, the vulnerabilities of iris-based recognition systems to direct attacks are studied. A database of fake iris images has been created from real iris ...
Virginia Ruiz-Albacete, Pedro Tome-Gonzalez, Ferna...
ICB
2007
Springer
159views Biometrics» more  ICB 2007»
13 years 8 months ago
Coarse Iris Classification by Learned Visual Dictionary
Abstract. In state-of-the-art iris recognition systems, the input iris image has to be compared with a large number of templates in database. When the scale of iris database increa...
Xianchao Qiu, Zhenan Sun, Tieniu Tan
ICBA
2004
Springer
144views Biometrics» more  ICBA 2004»
13 years 10 months ago
Improving Iris Recognition Accuracy via Cascaded Classifiers
As a reliable approach to human identification, iris recognition has received increasing attention in recent years. In the literature of iris recognition, local feature of image de...
Zhenan Sun, Yunhong Wang, Tieniu Tan, Jiali Cui
ISVC
2007
Springer
13 years 10 months ago
Iris Recognition: An Entropy-Based Coding Strategy Robust to Noisy Imaging Environments
Abstract. The iris is currently accepted as one of the most accurate traits for biometric purposes. However, for the sake of accuracy, iris recognition systems rely on good quality...
Hugo Proença, Luís A. Alexandre
ICIP
2007
IEEE
13 years 10 months ago
Learning Appearance Primitives of Iris Images for Ethnic Classification
Iris pattern is commonly regarded as a kind of phenotypic feature without relation to genes. In our previous work, we argued that iris texture is race related, and its genetic inf...
Xianchao Qiu, Zhenan Sun, Tieniu Tan