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Total results: 582

Evaluating the Tobii Pro Glasses 2 and 3 in static and dynamic conditions

Year: 2023

Authors: V Onkhar,D Dodou,JCF De Winter

Over the past few decades, there have been significant developments in eye-tracking technology, particularly in the domain of mobile, head-mounted devices. Nevertheless, questions remain regarding the accuracy of these eye-trackers during static and dynamic tasks. In light of this, we evaluated the performance of two widely used devices: Tobii Pro Glasses 2 and Tobii Pro Glasses 3. A total of 36 participants engaged in tasks under three dynamicity conditions. In the “seated with a chinrest” trial, only the eyes could be moved; in the “seated without a chinrest” trial, both the head and the eyes were free to move; and during the walking trial, participants walked along a straight path. During the seated trials, participants’ gaze was directed towards dots on a wall by means of audio instructions, whereas in the walking trial, participants maintained their gaze on a bullseye while walking towards it. Eye-tracker accuracy was determined using computer vision techniques to identify the target within the scene camera image. The findings showed that Tobii 3 outperformed Tobii 2 in terms of accuracy during the walking trials. Moreover, the results suggest that employing a chinrest in the case of head-mounted eye-trackers is counterproductive, as it necessitates larger eye eccentricities for target fixation, thereby compromising accuracy compared to not using a chinrest, which allows for head movement. Lastly, it was found that participants who reported higher workload demonstrated poorer eye-tracking accuracy. The current findings may be useful in the design of experiments that involve head-mounted eye-trackers.

Eye Tracking Glasses
Simulator

11 versions available

Experimental research on college students’ emergency ability and its influencing factors in virtual emergency situations

Year: 2023

Authors: X Wang, Y Li

In this paper, the physiological emergency ability of college students and its influencing factors are analyzed using the experimental method. College students are grouped according to gender, age, emergency knowledge mastery, psychological condition, professional background, origin of students, interest in emergency knowledge, whether they have conducted emergency drills, whether they are the only child, etc. The difference between each influencing factor and individual physiological index is significant. It provides a theoretical basis for improving the emergency ability of college students, and makes up for the theoretical gap that few experimental methods are used to study the emergency ability of college students.

Eye Tracking Glasses
Simulator

4 versions available

Eye-tracking in Association with Phishing Cyber Attacks: A Comprehensive Literature Review

Year: 2023

Authors: N Hussein

As of 2021, it has been reported that around 90% of data breaches occur on account of phishing, while about 83% of organizations experienced phishing attacks [1]. Phishing can be defined as the cybercrime in which a target is contacted through e-mail, telephone or text message by someone impersonating a legitimate institution [2]. Through psychological manipulation, the threat actor attempts to deceive users into providing sensitive information, thereby causing financial and intellectual property losses, reputational damages, and operational activity disruption. In this light, this paper presents a comprehensive review of eye-tracking in association with phishing cyberattacks. To determine their impact on phishing detection accuracy, this work reviews 20 empirical studies which measure eye-tracking metrics with respect to different Areas of Interest (AOIs). The described experiments aim to produce simple cognitive user reactions, examine concentration, perception and trust in the system; all in which determine the level of susceptibility to deception and manipulation. Results suggest that longer gaze durations on AOIs, characterized by higher attention control, are strongly correlated with detection accuracy. Eye-tracking behavior also shows that technical background, domain knowledge, experience, training, and risk perception contribute to mitigating these attacks. Meanwhile, Time to First Fixation (TTFF), entry time and entry sequence data yielded inconclusive results regarding the impact on susceptibility to phishing attacks. The results aid in designing user-friendly URLs, visual browsing aids, and embedded and automated authentication systems. Most importantly, these findings can be used to establish user awareness through the development of training programs.

Eye Tracking Glasses
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Gaze behavior data in the vitrine of human movement science: considerations on eye-tracking technique

Year: 2023

Authors: T Penedo,ST Rodrigues,GC Gotardi

BACKGROUND: Eyes are the main gateway of visual information input. Moving the eyes is essential to extract visual information from scenes while performing motor actions. This helps to explain motor behavior, especially related to visual attention mechanisms, gaze training and learning, and the relevance of visual information in controlling actions. Thus, collecting data on gaze behavior is important for explaining motor behavior. AIM: We present the main video-based eye-tracking techniques, briefly describe the anatomy of the eyes, explain the operation of the eye-tracker (eye capture techniques, calibration, and data analysis), and propose interpretations of the main variables that were extracted by the technique. This way we develop considerations (limitations and advantages) on the eye-tracking technique that placed gaze behavior data under the view of human movement science. INTERPRETATION: Eye-tracking has become an excellent tool to assist in the analysis of human movement through gaze behavior. It is possible to make inferences, mainly from the combination of sensory information, such as visual information, with performance during motor tasks, about perception, cognition, and human behavior during the most diverse day-to-day activities. Eye-tracker systems have been employed in different majors related to motor behavior, such as medicine, commerce, and game development. KEYWORDS: Eye movement | Vision | Motor behavior

Eye Tracking Glasses
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4 versions available

Hand-Eye Behaviour Analytics for Children with Autism Spectrum Disorder

Year: 2023

Authors: D Zhang

Autism Spectrum Disorder (ASD) is a neurodevelopmental condition that typically manifests in early childhood. Early detection and diagnosis of the disease are vital for ensuring that children receive the necessary support and interventions, which can significantly improve their outcomes. However, the shortage of clinical professionals and the lengthy diagnostic process pose significant barriers to early screening and diagnosis. This highlights the pressing need to develop efficient and effective methods to enhance the early screening and diagnosis procedure. Human behaviour analytics has emerged as a promising solution to this challenge. This field leverages computer vision technology, providing valuable insights into behaviour patterns. Utilising Vision-based human behaviour analytics methods, the atypical hand and eye behaviour patterns in individuals with ASD can be objectively measured to provide valuable insights and objective behaviour measurement to aid in the diagnosis process. This thesis aims to utilise the methods of human behaviour analytics to conduct a study of the hand and eye-related atypical behavioural patterns in individuals with ASD, with the goal of ultimately enhancing the efficiency of ASD early screening and diagnosis. Firstly, action recognition has been incorporated into ASD research in recognising stereotyped behaviours. Compared to other modal data, skeletal data can better accommodate spatial-temporal information, which, together with the attention mechanism, is expected to model the temporal correlation better, thus improving recognition accuracy. Therefore, a self-attention network with a novel 2D skeleton joint position encoding is adopted for action/gesture recognition tasks; it obtained competitive results with reduced computational complexity. Furthermore, the action recognition performance of ASD stereotyped behaviour was significantly improved by applying transfer learning. Secondly, to facilitate manual behaviour observation in ASD diagnoses, two behaviour quantitative analysis strategies have been proposed. The first approach proposes a Sequential Bag of Convolutional Features (SBoCF) method based on the bag-of-words (BoW) model. This approach employs deep learning techniques to eliminate the need for manually human-observed behavioural coding (HOC), enabling efficient and objective behavioural analysis. The second approach draws inspiration from the action quality assessment (AQA) concept and develops corresponding deep learning models for scoring ASD behaviours. This approach achieves promising results, showing statistical correlations between model-predicted scores and truth scores on a large public ASD dataset. Finally, consider the atypical hand-eye behaviour in ASD to further explore joint hand-eye behaviour research and build an interpretative framework for assessing hand-eye coordination (HEC) abilities. This study designs a hand-drawing imitation protocol with a vision-based data acquisition system. A hand-eye coordination ability metric based on Cross-Recurrence Quantitative Analysis (C-RQA) is also proposed. In conclusion, this thesis comprehensively studies hand and joint hand-eye behaviour analytics for children with ASD. By incorporating machine learning and computer vision technologies, it attempts to develop new methods and techniques to assist in the diagnosis and intervention of ASD. The study focuses on both qualitative and quantitative analysis of behaviour patterns and demonstrates the potential of these techniques in diagnosing ASD.

Eye Tracking Glasses
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1 version available:

How do drivers allocate visual attention to vulnerable road users when turning at urban intersections?

Year: 2023

Authors: J Girgis, M Powell,B Donmez,J Pratt,P Hess

Drivers turning at urban intersections pose a high risk to Vulnerable Road Users (VRUs), such as cyclists and pedestrians. In vehicle collisions with VRUs, driver attention misallocation is considered a leading contributor. While previous naturalistic studies have examined driver gaze behaviors at intersections, findings are limited to general gaze directions obtained through video analysis, meaning specific areas to which drivers attend cannot be determined. We present a secondary analysis of an on-road instrumented vehicle dataset collected in 2019 which offers eye-tracking and video data from 26 experienced drivers (13 cyclists and 13 non-cyclists). Three coders jointly examined eye-tracking footage from four right-signalized turns (n=96) to quantify drivers’ glance distributions to various areas of interest, including those most relevant to VRU safety when drivers turn. Individual temporal glance patterns and general attention allocation trends are presented and described. (1) Relevant pedestrians were the top objects of glance irrespective of signal status, and (2) at red light turns, driver attention was heavily skewed toward leftward traffic. This analysis provides a detailed report of driver glance distributions toward scene-specific areas (as opposed to general directions) at urban intersections and discusses how these patterns may influence VRU safety.

Eye Tracking Glasses
Simulator

5 versions available

Hypoxia impairs reaction time but not response accuracy in a visual choice reaction task

Year: 2023

Authors: Y Steinman,E Groen, MHW Frings

We investigated the effect of hypoxia on the reaction time (RT) and response accuracy of pilots performing a visual choice reaction task that corresponded to the scanning of helmet mounted display (HMD) symbology. Eighteen male military pilots performed the task in a hypobaric chamber at two simulated altitudes (92 m and 4572 m) in a single-blinded repeated measures and counter-balanced design. The visual stimuli were displayed in low and high contrast and at a 30- and 50-degree field of view (FoV). We measured the pilots' RT and response accuracy. Using an eye tracker, we measured the pilot's glance time at each stimulus location. Finally, we collected subjective ratings of alertness. The results show that hypoxia increased the RT and glance time. Lowering the stimulus contrast and increasing the FoV further increased the RT, independent of hypoxia. These findings provide no evidence for hypoxia-induced changes in visual contrast sensitivity or visual field. Instead, hypoxia seemed to affect RT and glance time by reducing alertness. Despite the increased RT, the pilots maintained their accuracy on the visual task, suggesting that visual scanning of HMD symbology may be resistant to the effects of acute hypoxia.

Eye Tracking Glasses
Simulator

5 versions available

Impact of Road Central Greening Configuration on Driver Eye Movements: A Study Based on Real Vehicle Experiments

Year: 2023

Authors: X Zhao, K Shen, Z Mo,Y Xue, C Xue, S Zhang, Q Yu

Safe driving depends on drivers’ ability to rapidly and accurately process information in varying traffic conditions. The presence of central green landscapes on roads is a key factor in this context. However, there is a gap in current research, which tends to focus on qualitative aspects of landscape design while lacking quantitative data-driven analyses. In this study, we aim to address this gap by investigating the impact of road central greening configuration on the eye movements of young novice drivers, a population particularly sensitive to external environmental changes. Specifically, we explore the influence of central green landscapes on four visual parameters: driver gaze, saccade, blinking, and pupil behavior. Through real vehicle experiments conducted on different road sections, we collected visual feature data to comprehensively analyze the patterns of driver eye movements. Our findings reveal that the introduction of central green landscapes can exert cognitive pressure on drivers, leading to specific alterations in their visual parameters. These changes include dispersed gaze points, reduced effective gaze durations, increased gaze frequencies, extended saccade durations and angles, heightened blink durations and frequencies, and reduced pupil area. By shedding light on the intricate interplay between road central greenery and driver behavior, this study provides valuable insights for optimizing landscape design in transportation planning and enhancing road safety considerations.

Eye Tracking Glasses
Software

5 versions available

Improving Driving Automation Training Through Scaffolding of Roles and Responsibilities Information: A Comparison between Older and Younger Drivers

Year: 2023

Authors: H Zheng,JR Mason,S Classen

Adaptive Cruise Control (ACC) is an Advanced Driver Assistance System (ADAS) commonly found in new vehicles that shares the responsibilities of maintaining headway and speed. However, drivers often have a limited understanding of their roles and responsibilities and how they should modify their behaviors when driving with ACC. This study investigates the effect of scaffolding teaching technique by providing additional background knowledge about ACC and highlighting drivers’ new roles and responsibilities for both older and younger adults during text-based ACC training programs. The study also initiates a new approach to evaluate drivers’ learning outcomes at different stages of driving automation training (i.e., reading behavior during training, post-training knowledge test, gaze monitoring behavior, and driving performance during simulated driving). Thirty-nine participants (20 younger + 19 older) received one of the two ACC training protocols: basic (system functionality, operational procedures, and limitations) and comprehensive (basic training + ACC background information and driving roles and responsibilities). The results showed that the comprehensive training led to reduced reading page revisits and adjusted workload during training, better performance in post-training knowledge tests, and more ACC engagement during simulated driving. The findings also suggested the feasibilities and connections within the new training evaluation approach that can provide insights into understanding ACC training outcomes through different stages. Future research is needed to further explore the effect of scaffolding teaching method on trainees’ learning-behavioral translation and the application of the new training evaluation approach to support experimental design or other in-vehicle technologies.

Eye Tracking Glasses
Simulator

1 version available:

Linguistic Cognitive Load Analysis on Dialogues with an Intelligent Virtual Assistant

Year: 2023

Authors: M Arvan,M Valizadeh,P Haghighat

Virtual assistants have become fixtures in everyday settings, but most research focuses on their development rather than their use following deployment. To facilitate study of their use in office settings, we introduce OfficeDial, a multimodal dataset containing audio recordings, transcriptions, eye tracking data, and screen recordings from conversations between humans and virtual assistants in office environments. Conversations are paired with physical and behavioral measures of cognitive load. We study the associations between verbal behavior and noise level and reveal key relationships between verbal redundancy, disfluency, and noise level. We make our new dataset available to interested researchers to inspire further exploration.

Eye Tracking Glasses
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1 version available: