Results 21 to 30 of about 407,598 (197)

The Infrared Imaging Spectrograph (IRIS) for TMT: Data Reduction System [PDF]

open access: yes, 2016
IRIS (InfraRed Imaging Spectrograph) is the diffraction-limited first light instrument for the Thirty Meter Telescope (TMT) that consists of a near-infrared (0.84 to 2.4 $\mu$m) imager and integral field spectrograph (IFS). The IFS makes use of a lenslet
Chapin, Edward L.   +17 more
core   +2 more sources

Iris Code Capacity Analysis [PDF]

open access: yes, 2021
Daugman’s design of IrisCode continues fascinating the research world with its practicality, efficiency, and outstanding performance. The limits of Daugman’s recognition system, however, remain unquantified. Multiple approaches to scale performance have been explored in the past.
Natalia Schmid, Jinyu Zuo
openaire   +1 more source

Steeper Iris Conicity Is Related to a Shallower Anterior Chamber: The Gutenberg Health Study

open access: yesJournal of Ophthalmology, 2017
Purpose. To report the distribution of iris conicity (steepness of the iris cone), investigate associated factors, and test whether pseudophakia allows the iris to sink back. Methods.
Alexander K. Schuster   +9 more
doaj   +1 more source

An effective authentication scheme for a secured IRIS recognition system based on a novel encoding technique

open access: yesMeasurement: Sensors, 2023
Iris recognition systems are well known for their accuracy than any other biometric system and very popular due to the permanent nature of the iris image.
D. Harikrishnan   +4 more
doaj   +1 more source

Anonymous subject identification and privacy information management in video surveillance [PDF]

open access: yes, 2017
The widespread deployment of surveillance cameras has raised serious privacy concerns, and many privacy-enhancing schemes have been recently proposed to automatically redact images of selected individuals in the surveillance video for protection.
Barni, Mauro   +4 more
core   +1 more source

Effective analysis of Iris Images for Iris Recognition System

open access: yesInternational Journal of Science and Engineering Applications, 2012
This paper proposes an iris recognition algorithm based on iris images. It consists of five major steps i.e., iris acquisition, localization, normalization, feature extraction and matching. The inner pupil boundary is localized using Circular Hough Transformation.
Anuradha Shrivas, Preeti Tuli
openaire   +1 more source

A study on iris textural correlation using steering kernels [PDF]

open access: yes, 2016
Research on iris recognition have observed that iris texture has inherent radial correlation. However, currently, there lacks a deeper insight into iris textural correlation.
Howells, Gareth   +2 more
core   +1 more source

Near-infrared spectroscopy study of tourniquet-induced forearm ischaemia in patients with coronary artery disease [PDF]

open access: yes, 2013
Near-Infrared Spectroscopy (NIR) can be employed to monitor local changes in haemodynamics and oxygenation of human tissues. A preliminary study has been performed in order to evaluate the NIRS transmittance response to induced forearm ischaemia in ...
Bavera, M   +6 more
core   +5 more sources

A New Feature Extraction Approach in Classification for Improving the Accuracy in Iris Recognition

open access: yesJOIV: International Journal on Informatics Visualization, 2023
Personal identity is becoming increasingly vital to meet the increasing security standards of today's business society. Iris recognition is one of the most accurate biometric technologies currently in use.
Tara Othman Qadir   +2 more
doaj   +1 more source

Joint Planck and WMAP CMB Map Reconstruction [PDF]

open access: yes, 2014
We present a novel estimate of the cosmological microwave background (CMB) map by combining the two latest full-sky microwave surveys: WMAP nine-year and Planck PR1.
Bobin, J.   +4 more
core   +5 more sources

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