Results 11 to 20 of about 407,598 (197)

Deepfakes Detection by Iris Analysis

IEEE Access
Deepfake is an advanced technology that creates extremely realistic facial images and videos. This new technique operates under specific conditions and has a wide range of applications.
Elisabeth Tchaptchet, Elie Fute Tagne, Jaime Acosta, Danda B. Rawat, Charles Kamhoua   +4 more
doaj   +2 more sources

Iris identification based on a local analysis of the iris texture [PDF]

2009 Proceedings of 6th International Symposium on Image and Signal Processing and Analysis, 2009
This paper focuses on a new iris identification method based on a local analysis of the iris texture. In the method, the iris is divided in sub-regions, using locally sliding windows, to extract local signatures. Local distances are then calculated and fused, based on a weighting average.
Adam, Mathieu, Rossant, Florence, Mikovicova, Beata, Amiel, Frédéric   +3 more
openaire   +2 more sources

An analysis of 1-to-first matching in iris recognition [PDF]

2016 IEEE Winter Conference on Applications of Computer Vision (WACV), 2016
Iris recognition systems are a mature technology that is widely used throughout the world. In identification (as opposed to verification) mode, an iris to be recognized is typically matched against all N enrolled irises. This is the classic "1-to-N search".
Andrey Kuehlkamp, Kevin W. Bowyer
openaire   +2 more sources

Iris Recognition: An Analysis of the Aliasing Problem in the Iris Normalization Stage [PDF]

2006 International Conference on Computational Intelligence and Security, 2006
Iris recognition has been increasingly used with very satisfactory results. Presently, the challenge consists in unconstraining the image capturing conditions and enable its application to domains where the subjects' cooperation is not expectable (e.g., criminal/terrorist seek, missing children).
Hugo Proenca, Luis Alexandre
openaire   +1 more source

Improved visibility of illuminated chopper-assisted cataract surgery involving iris challenges

Indian Journal of Ophthalmology, 2023
Purpose: The aim of this study was to evaluate the efficacy of the illuminated chopper-assisted cataract surgery in terms of shortening the surgical time and reducing the use of pupil expansion devices in eyes with iris challenges.
Haram Kim, Sung Ha Hwang, Youngsub Eom, Dong Heun Nam   +3 more
doaj   +1 more source

SHERPA: A Spectrometer with High Energy Resolution and Polarisation Analysis [PDF]

EPJ Web of Conferences, 2022
SHERPA is a proposed quasielastic neutron spectrometer with polarisation analysis, intended to replace the ageing Iris instrument at the ISIS neutron and muon source. In this paper we present a concept of the instrument along with Monte-Carlo simulations
Nemkovski Kirill, Bewley Robert, García Sakai Victoria, Nilsen Gøran Jan, Perrichon Adrien, Silverwood Ian   +5 more
doaj   +1 more source

The Infrared Imaging Spectrograph (IRIS) for TMT: optical design of IRIS imager with "Co-axis double TMA" [PDF]

, 2016
IRIS (InfraRed Imaging Spectrograph) is one of the first-generation instruments for the Thirty Meter Telescope (TMT). IRIS is composed of a combination of near-infrared (0.84--2.4 $\mu$m) diffraction limited imager and integral field spectrograph.
Harakawa, Hiroki, Hayano, Yutaka, Ikenoue, Bungo, Larkin, James, Moore, Anna, Obuchi, Yoshiyuki, Phillips, Andrew C, Saito, Sakae, Suzuki, Ryuji, Tsuzuki, Toshihiro, Uraguchi, Fumihiro, Wincentsen, James, Wright, Shelley   +12 more
core   +3 more sources

An Exclusively Skewed Distribution of Pediatric Immune Reconstitution Inflammatory Syndrome Toward the Female Sex Is Associated With Advanced Acquired Immune Deficiency Syndrome

Frontiers in Pediatrics, 2019
In human immunodeficiency virus and acquired immune deficiency syndrome (HIV/AIDS) patients with very low CD4 cell counts, there is a temporal relationship between administration of antiretroviral therapy (ART) and an increased inflammatory response ...
Regina Célia de Souza Campos Fernandes, Regina Célia de Souza Campos Fernandes, Regina Célia de Souza Campos Fernandes, Thaís Louvain de Souza, Thaís Louvain de Souza, Thiago da Silva Barcellos, Enrique Medina-Acosta   +6 more
doaj   +1 more source

Predictors of angle widening after laser iridotomy in Chinese patients with primary angle-closure suspect using ultrasound biomicroscopy [PDF]

International Journal of Ophthalmology, 2022
AIM: To assess the predictive value of baseline parameters of ultrasound biomicroscopy (UBM) for angle widening after prophylactic laser peripheral iridotomy (LPI) in patients with primary angle-closure suspect (PACS).
Xue-Ting Pei, Shu-Hua Wang, Xia Sun, Hong Chen, Bing-Song Wang, Shu-Ning Li, Tao Wang   +6 more
doaj   +1 more source

Influence of segmentation on deep iris recognition performance

, 2020
Despite the rise of deep learning in numerous areas of computer vision and image processing, iris recognition has not benefited considerably from these trends so far.
Lozej, Juš, Peer, Peter, Štepec, Dejan, Štruc, Vitomir   +3 more
core   +1 more source