A5061672355- Interactive and Immersive Displays
- Gaze Tracking and Assistive Technology
- Advanced Optical Imaging Technologies
- Virtual Reality Applications and Impacts
- Augmented Reality Applications
- User Authentication and Security Systems
- Tactile and Sensory Interactions
- Biometric Identification and Security
Kadir Has University
2022-2024
Dalhousie University
2023
The vergence-accommodation conflict (VAC) limits user performance in current Virtual Reality (VR) systems. In this paper, we investigate the effects of VAC a single-focal VR system using three experimental conditions: with no VAC, constant and varying VAC. Previous work area had yielded conflicting results, so decided to re-investigate issue. Eighteen participants performed an ISO 9241:411 task study that closely replicates previous work, except angle space was rotated 20 degrees downward,...
Even though VR design applications that support sketching are popular, accurately in mid-air is challenging for users. In this paper, we explore discrete visual guides assist users' stroke accuracy and drawing experience inside the virtual environment. We also present an eye-tracking study compares continuous, discrete, no guide a basic task. Our experiment asks participants to draw circle line using three different types, sizes two orientations. Results indicate more user-friendly than...
Due to the current push of social Virtual Reality (VR) apps and mobile VR headsets, users are surrounded by people in real life virtually. Users need a private method authenticate payments or login into apps. In this paper, we propose VoxAuth, novel voxel-based 3D authentication system, allowing input their password way. By using eye-gaze as secure, method, outside prevented from observing pass-word. Sunglasses on avatar appear during process both gaze observation prevention signal that user...
Visual guides help to align strokes and raise accuracy in Virtual Reality (VR) sketching tools. Automatic that appear at relevant areas are convenient have for a seamless with guide. We explore exploit eye-tracking render them adaptive the user's visual attention. EyeGuide EyeConGuide cause grid fragments spatially close intended sketches, based on information of eye-gaze direction 3D position hand. Here we evaluated techniques two user studies across simple complex objectives VR. The...
Previous work has proposed using voxel-based graphical passwords (VGPs) for Virtual Reality (VR) as a secure, easy-to-remember way to authenticate users. Moreover, eye-tracking technology adds another level of security, it avoids observational threats when entering the password. However, previous yet evaluate user performance, usability, and memorability different combinations VGPs. In two studies, we first identified best combination shape volume Then, compare 3D versus 2D Our results show...
When working in Virtual Reality (VR), the user's performance is affected by how user holds input device (e.g., controller), typically using either a precision or power grip. Previous work examined these grip styles for 3D pointing at targets different depths peripersonal space and found that participants had lower error rate with but identified no difference movement speed, throughput, interaction target depth. Yet, this previous experiment was potentially tracking differences between...