scholarly journals Design and Application of a Novel Virtual Reality Navigational Technology (VRNChair)

2014 ◽  
Vol 8 ◽  
pp. JEN.S13448 ◽  
Author(s):  
Ahmad Byagowi ◽  
Danyal Mohaddes ◽  
Zahra Moussavi
Keyword(s):  
Virtual Reality ◽  
Optical Flow ◽  
Input Device ◽  
Gaming Industry ◽  
Input Devices ◽  
Manual Wheelchair ◽  
Vestibular Response ◽  
Computer Input ◽  
Computer Input Devices ◽  
Natural Way

This paper presents a novel virtual reality navigation (VRN) input device, called the VRNChair, offering an intuitive and natural way to interact with virtual reality (VR) environments. Traditionally, VR navigation tests are performed using stationary input devices such as keyboards or joysticks. However, in case of immersive VR environment experiments, such as our recent VRN assessment, the user may feel kinetosis (motion sickness) as a result of the disagreement between vestibular response and the optical flow. In addition, experience in using a joystick or any of the existing computer input devices may cause a bias in the accuracy of participant performance in VR environment experiments. Therefore, we have designed a VR navigational environment that is operated using a wheelchair (VRNChair). The VRNChair translates the movement of a manual wheelchair to feed any VR environment. We evaluated the VRNChair by testing on 34 young individuals in two groups performing the same navigational task with either the VRNChair or a joystick; also one older individual (55 years) performed the same experiment with both a joystick and the VRNChair. The results indicate that the VRNChair does not change the accuracy of the performance; thus removing the plausible bias of having experience using a joystick. More importantly, it significantly reduces the effect of kinetosis. While we developed VRNChair for our spatial cognition study, its application can be in many other studies involving neuroscience, neurorehabilitation, physiotherapy, and/or simply the gaming industry.

Comparing Computer Input Devices Using Kinematic Variables

2005 ◽  
Vol 49 (5) ◽  
pp. 711-715 ◽  
Author(s):  
Jeremy Slocum ◽  
Alex Chaparro ◽  
Daniel McConnell ◽  
Michael Bohan
Keyword(s):  
Partial Correlation ◽  
Peak Velocity ◽  
Primary Phase ◽  
Movement Behavior ◽  
Input Device ◽  
Input Devices ◽  
Computer Input ◽  
Computer Input Devices ◽  
Speed Accuracy ◽  
Accuracy Tradeoff

Throughput (TP) is a global measure of input device efficiency but provides little information about user's movement behavior when interacting with a device. Psychomotor models of movement provide a framework from which to develop new “during” movement variables that can be used to explain why efficiency differences occur. Data from a previous study examining the usability of a mouse, trackball and RollerMouse™ was re-examined using TP and the kinematic variables peak velocity of the primary movement (PV) and proportion of total distance traveled in primary phase (%PMD). Partial correlation analysis found %PMD and PV to be significantly related to TP and negatively related with each other, suggesting a “speed/accuracy” tradeoff. Further analysis confirmed the variables were useful in discriminating between devices and found that the most efficient device was less constrained by the “speed/accuracy” tradeoff. It was concluded that kinematic variables offer a useful way of understanding efficiency differences between devices.

A Comparison of Computer Input Devices: Linus Pen, Mouse, Cursor Keys and Keyboard

1989 ◽  
Vol 33 (5) ◽  
pp. 330-334 ◽  
Author(s):  
Karen Renee Mahach
Keyword(s):  
Handwriting Recognition ◽  
Data Entry ◽  
Recognition System ◽  
Input Device ◽  
Input Devices ◽  
Mouse Cursor ◽  
Computer Input ◽  
Computer Input Devices ◽  
Speed And Accuracy ◽  
Optical Mouse

Four input devices were compared in a data entry task by speed and accuracy scores. The input devices were: Linus pen (a handwriting recognition system), optical mouse, cursor keys, and alphabetic keys on a keyboard. Data entry consisted of twenty 5-letter words and 100 single letters. Two different screen designs (QWERTY and ALPHA) were used for the mouse and cursor keys conditions. Results showed the keyboard to be fastest and the cursor keys to be slowest in data entry. The mouse and Linus pen had comparable latency scores. Overall, five-letter words were entered faster than five single letters. Latency decreased over trials, and ALPHA conditions required more time than QWERTY conditions. The Linus pen was the least accurate input device. The cursor QWERTY condition produced the highest accuracy scores for letter entry while the keyboard produced the highest accuracy scores for word entry.

Investigation of Feel for 6DOF Inputs: Isometric and Elastic Rate Control for Manipulation in 3D Environments

1993 ◽  
Vol 37 (4) ◽  
pp. 323-327 ◽  
Author(s):  
Shumin Zhai
Keyword(s):  
Virtual Reality ◽  
Rate Control ◽  
Open Loop ◽  
Superior Performance ◽  
Task Completion ◽  
Input Devices ◽  
Computer Input ◽  
3D Environments ◽  
Computer Input Devices ◽  
High Degree

An increasing need exists for both a theoretical basis and practical human factors guidelines for designing and selecting high degree-of-freedom (DOF) computer input devices for 3D interactive environments such as telerobotic and virtual reality systems. This study evaluates elastic versus isometric rate control devices, in a 3D object positioning task. An experiment was conducted with a stereoscopic virtual reality system. The results showed that the elastic rate controller facilitated faster task completion time in the first of four phases of the experiment. The results are discussed in light of psychomotor literature. While the richer proprioceptive feedback afforded by an elastic controller is necessary for achieving superior performance in the early stages of learning, subjects performed equally well with the isometric controller in later learning stages. The study provides evidence to support a theory of skill shift from closed-loop to open-loop behaviour as learning progresses.

Computer input devices: Quantification of use and variation in use

2004 ◽  
Author(s):  
Carolyn M. Sommerich ◽  
Sahika Vatan ◽  
Amy Asmus
Keyword(s):  
Input Devices ◽  
Computer Input ◽  
Computer Input Devices

scholarly journals Telemanipulation of an Articulated Robotic Arm using a Commercial Virtual Reality Controller

2020 ◽  
Vol 6 (3) ◽  
pp. 127-130
Author(s):  
Max B. Schäfer ◽  
Kent W. Stewart ◽  
Nico Lösch ◽  
Peter P. Pott
Keyword(s):  
Virtual Reality ◽  
Real Time ◽  
Robotic Arm ◽  
Input Device ◽  
Robot Assisted ◽  
Promising Alternative ◽  
Input Devices ◽  
Current Input ◽  
Current Systems ◽  
Robot Assisted Surgery

AbstractAccess to systems for robot-assisted surgery is limited due to high costs. To enable widespread use, numerous issues have to be addressed to improve and/or simplify their components. Current systems commonly use universal linkage-based input devices, and only a few applicationoriented and specialized designs are used. A versatile virtual reality controller is proposed as an alternative input device for the control of a seven degree of freedom articulated robotic arm. The real-time capabilities of the setup, replicating a system for robot-assisted teleoperated surgery, are investigated to assess suitability. Image-based assessment showed a considerable system latency of 81.7 ± 27.7 ms. However, due to its versatility, the virtual reality controller is a promising alternative to current input devices for research around medical telemanipulation systems.

Physical workload during use of speech recognition and traditional computer input devices

Ergonomics ◽  
2004 ◽  
Vol 47 (2) ◽  
pp. 119-133 ◽  
Author(s):  
B. JUUL-KRISTENSEN†*, ◽  
B. LAURSEN‡, ◽  
M. PILEGAARD§ and ◽  
B.R. JENSEN§
Keyword(s):  
Speech Recognition ◽  
Physical Workload ◽  
Input Devices ◽  
Computer Input ◽  
Computer Input Devices
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