Results 31 to 40 of about 85,203 (280)

Exploring the Potential of Event Camera Imaging for Advancing Remote Pupil-Tracking Techniques

open access: yesApplied Sciences, 2023
Pupil tracking plays a crucial role in various applications, including human–computer interactions, biometric identification, and Autostereoscopic three-dimensional (3D) displays, such as augmented reality (AR) 3D head-up displays (HUDs). This study aims
Dongwoo Kang   +2 more
doaj   +1 more source

Pupil plane differential detection microscopy

open access: yesOptics Letters, 2018
Differential interference contrast (DIC) microscopy is a powerful technique for imaging phase objects in transparent samples but does not work with scattering samples. This Letter, to the best of our knowledge, describes a new technique for obtaining DIC-like phase-gradient images in scattering media based on differential detection of forward-scattered
Hari P, Paudel   +3 more
openaire   +2 more sources

Pupil Segmentation Using Orientation Fields, Radial Non-Maximal Suppression and Elliptic Approximation

open access: yesAdvances in Electrical and Computer Engineering, 2019
This paper proposes a novel pupil segmentation method for robust iris recognition systems. The proposed method uses orientation fields to accurately detect an initial pupil center, and applies radial non-maximal suppression to remove non-pupil ...
LEE, S., LEE, D., PARK, Y.
doaj   +1 more source

The additive nature of the human multisensory evoked pupil response

open access: yesScientific Reports, 2021
Pupillometry has received increased interest for its usefulness in measuring various sensory processes as an alternative to behavioural assessments. This is also apparent for multisensory investigations.
Nathan Van der Stoep   +4 more
doaj   +1 more source

Robust eye tracking based on multiple corneal reflections for clinical applications [PDF]

open access: yes, 2018
Postprint (published ...
Gautier, Josselyn   +2 more
core   +2 more sources

Pupil Localisation and Eye Centre Estimation Using Machine Learning and Computer Vision

open access: yesSensors, 2020
Various methods have been used to estimate the pupil location within an image or a real-time video frame in many fields. However, these methods lack the performance specifically in low-resolution images and varying background conditions.
Wasiq Khan   +3 more
doaj   +1 more source

Pupil Detection Execution Time Reduction in Iris Recognition System [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2008
Iris recognition is regarded as the most reliable and accurate biometric identification system available. The work presented in this paper involves improving iris segmentation to reduce execution time.
Maha Hasso   +2 more
doaj   +1 more source

Deep-Learning-Based Pupil Center Detection and Tracking Technology for Visible-Light Wearable Gaze Tracking Devices

open access: yesApplied Sciences, 2021
In this study, for the application of visible-light wearable eye trackers, a pupil tracking methodology based on deep-learning technology is developed.
Wei-Liang Ou   +3 more
doaj   +1 more source

Speckle noise reduction techniques for high-dynamic range imaging [PDF]

open access: yes, 2007
High-dynamic range imaging from space in the visible, aiming in particular at the detection of terrestrial exoplanets, necessitates not only the use of a coronagraph, but also of adaptive optics to correct optical defects in real time.
Belikov   +23 more
core   +3 more sources

Assessing Visual Fatigue of Welding Mask Wearers Through Infrared Imaging-Based Ocular Feature Analysis

open access: yesIEEE Access, 2021
Electronic devices have become indispensable to individuals today. Looking at these electronic displays for extended periods causes visual fatigue. Herein, we propose three metrics for objective and quantitative measurement of visual fatigue: blink ...
Na Yeon Han   +3 more
doaj   +1 more source

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