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Spontaneous retinal Venous Pulsations (SVP) are rhythmic changes in the caliber of the central retinal vein and are observed in the optic disc region (ODR) of the retina. Its absence is a critical indicator of various ocular or neurological…

计算机视觉与模式识别 · 计算机科学 2023-05-11 Hongwei Sheng , Xin Yu , Feiyu Wang , MD Wahiduzzaman Khan , Hexuan Weng , Sahar Shariflou , S. Mojtaba Golzan

We present a novel, automatic eye gaze tracking scheme inspired by smooth pursuit eye motion while playing mobile games or watching virtual reality contents. Our algorithm continuously calibrates an eye tracking system for a head mounted…

计算机视觉与模式识别 · 计算机科学 2016-12-22 Subarna Tripathi , Brian Guenter

We built a custom video-based eye-tracker that saves every video frame as a full resolution image (MJPEG). Images can be processed offline for the detection of ocular features, including the pupil and corneal reflection (First Purkinje…

计算机视觉与模式识别 · 计算机科学 2019-04-17 Evgeniy Abdulin , Lee Friedman , Oleg Komogortsev

Eye-tracking plays a crucial role in the development of virtual reality devices, neuroscience research, and psychology. Despite its significance in numerous applications, achieving an accurate, robust, and fast eye-tracking solution remains…

计算机视觉与模式识别 · 计算机科学 2024-11-21 Jiazhang Wang , Tianfu Wang , Bingjie Xu , Oliver Cossairt , Florian Willomitzer

A small tabletop experiment for a direct measurement of the speed of light to an accuracy of few percent is described. The experiment is accessible to a wide spectrum of undergraduate students, in particular to students not majoring in…

物理教育 · 物理学 2009-11-13 Kenichiro Aoki , Takahisa Mitsui

The cameras in modern gaze-tracking systems suffer from fundamental bandwidth and power limitations, constraining data acquisition speed to 300 Hz realistically. This obstructs the use of mobile eye trackers to perform, e.g., low latency…

计算机视觉与模式识别 · 计算机科学 2022-08-09 Anastasios N. Angelopoulos , Julien N. P. Martel , Amit P. S. Kohli , Jorg Conradt , Gordon Wetzstein

In this paper, we present a technique for estimating the geometry and reflectance of objects using only a camera, flashlight, and optionally a tripod. We propose a simple data capture technique in which the user goes around the object,…

计算机视觉与模式识别 · 计算机科学 2021-04-14 Daniel Lichy , Jiaye Wu , Soumyadip Sengupta , David W. Jacobs

Objectives: To evaluate the performance of an Artificial Intelligence (AI) system (Pegasus, Visulytix Ltd., UK), at the detection of Diabetic Retinopathy (DR) from images captured by a handheld portable fundus camera. Methods: A cohort of…

图像与视频处理 · 电气工程与系统科学 2019-08-20 T W Rogers , J Gonzalez-Bueno , R Garcia Franco , E Lopez Star , D Méndez Marín , J Vassallo , V C Lansingh , S Trikha , N Jaccard

Pavlovian eyeblink conditioning is a powerful experiment used in the field of neuroscience to measure multiple aspects of how we learn in our daily life. To track the movement of the eyelid during an experiment, researchers have…

计算机视觉与模式识别 · 计算机科学 2020-07-16 Paul Bakker , Henk-Jan Boele , Zaid Al-Ars , Christos Strydis

Fast variability of optical objects is an interesting though poorly explored subject in modern astronomy. Real-time data processing and identification of transient celestial events in the images is very important for such study as it allows…

This work pioneers regret analysis of risk-sensitive reinforcement learning in partially observable environments with hindsight observation, addressing a gap in theoretical exploration. We introduce a novel formulation that integrates…

机器学习 · 计算机科学 2024-02-29 Tonghe Zhang , Yu Chen , Longbo Huang

In this paper, we will present a method for measuring cognitive load and online real-time feedback using the Tobii Pro 2 eye-tracking glasses. The system is envisaged to be capable of estimating high cognitive load states and situations,…

人机交互 · 计算机科学 2018-12-20 Georgios Minadakis , Katrin Lohan

Autonomous driving systems rely on panoptic driving perception that requires both precision and real-time performance. In this work, we propose RMT-PPAD, a real-time, transformer-based multi-task model that jointly performs object…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Jiayuan Wang , Q. M. Jonathan Wu , Katsuya Suto , Ning Zhang

Augmented reality display performance depends strongly on features of the human visual system. This is especially true for retinal scan glasses, which use laser beam scanning and transparent holographic optical combiners. Human-centered…

光学 · 物理学 2024-12-03 Maximilian Rutz , Pia Neuberger , Simon Pick , Torsten Straßer

The OpenFlexure Microscope is a 3D printed, low-cost microscope capable of automated image acquisition through the use of a motorised translation stage and a Raspberry Pi imaging system. This automation has applications in research and…

仪器与探测器 · 物理学 2021-09-16 Joe Knapper , Joel T. Collins , Julian Stirling , Samuel McDermott , William Wadsworth , Richard Bowman

We propose a new algorithm for real-time detection and tracking of elliptic patterns suitable for real-world robotics applications. The method fits ellipses to each contour in the image frame and rejects ellipses that do not yield a good…

机器人学 · 计算机科学 2021-12-09 Azarakhsh Keipour , Guilherme A. S. Pereira , Sebastian Scherer

Continuous assessment of task difficulty and mental workload is essential in improving the usability and accessibility of interactive systems. Eye tracking data has often been investigated to achieve this ability, with reports on the…

人机交互 · 计算机科学 2021-02-15 Youngjun Cho

This article describes the design, assembly and characterization of a portable cosmic ray detector, developed by the INSULAB group and suitable for teaching activities aimed at high school students. It consists of a compact aluminum…

Optical Doppler shift demonstration experiments are not a simple task since the light source cannot usually be moved in a sufficiently smooth and uniform manner to keep the level of noise well below of that of the signal. For that reason…

物理教育 · 物理学 2015-06-26 L. Bernal , L. Bilbao

The emergence of mobile eye trackers embedded in next generation smartphones or VR displays will make it possible to trace not only what objects we look at but also the level of attention in a given situation. Exploring whether we can…

人机交互 · 计算机科学 2016-02-17 Per Bækgaard , Michael Kai Petersen , Jakob Eg Larsen