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Publications

Publications by Ana Filipa Sequeira

2012

Gradient Flow Based Iris Segmentation on Noisy Images

Authors
João C. Monteiro; Hélder P. Oliveira; Ana F. Sequeira; Jaime S. Cardoso

Publication
StudECE 2012 - 1st PhD. Students Conference in Electrical and Computer Engineering , pp.1-2, Porto, Portugal

Abstract

2012

Colour feature selection for an unconstrained iris recognition system

Authors
Ana Filipa Sequeira; Samaneh Khoshrou; Jaime Cardoso

Publication
StudECE 2012 - 1st PhD. Students Conference in Electrical and Computer Engineering , Porto, Portugal

Abstract
We consider the problem of fusing colour information to enhance the performance of an iris authentication system. The discriminatory information potential of a vast range of colour channels is investigated. The verification process is based on open-source implementation made by Libor Masek. A sequential search approach was used which is similar to the 'plus L and take away R' algorithm that is applied in order to find an optimum subset of the colour spaces. The colour based classifiers are combined using the SVM classifier to find optimum colour features. We show that by fusing colour information using the proposed method, the resulting decision making scheme considerably outperforms the intensity based verification system.

2012

Color feature selection for unconstrained iris recognition

Authors
Ana Filipa Sequeira; Samaneh Khoshrou; Jaime Cardoso

Publication
RecPad 2012 - RecPad 2012 - 18th edition of the Portuguese Conference on Pattern Recognition, Coimbra, Portugal

Abstract

2012

Colour feature selection for an unconstrained iris recognition system

Authors
Ana Filipa Sequeira; Samaneh Khoshrou; Jaime Cardoso

Publication
StudECE 2012 - 1st PhD. Students Conference in Electrical and Computer Engineering , Porto, Portugal

Abstract