scholarly journals Applying Touchscreen Based Navigation Techniques to Mobile Virtual Reality with Open Clip-On Lenses

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1448 ◽  
Author(s):  
Youngwon Ryan Kim ◽  
Hyeonah Choi ◽  
Minwook Chang ◽  
Gerard J. Kim
Keyword(s):  
Virtual Reality ◽  
Degrees Of Freedom ◽  
Head Rotation ◽  
Display Device ◽  
Interaction Technique ◽  
Six Degrees Of Freedom ◽  
3D Space ◽  
To Come ◽  
3D Applications ◽  
Navigation Method

Recently, a new breed of mobile virtual reality (dubbed as “EasyVR” in this work), has appeared in the form of conveniently clipping on a non-isolating magnifying lenses on the smartphone, still offering a reasonable level of immersion to using the isolated headset. Furthermore, such a form factor allows the fingers to touch the screen and select objects quite accurately, despite the finger(s) being seen unfocused over the lenses. Many navigation techniques have existed for both casual smartphone 3D applications using the touchscreen and immersive VR environments using the various controllers/sensors. However, no research has focused on the proper navigation interaction technique for a platform like EasyVR which necessitates the use of the touchscreen while holding the display device to the head and looking through the magnifying lenses. To design and propose the most fitting navigation method(s) with EasyVR, we mixed and matched the conventional touchscreen based and headset oriented navigation methods to come up with six viable navigation techniques—more specifically for selecting the travel direction and invoking the movement itself—including the use of head-rotation, on-screen keypads/buttons, one-touch teleport, drag-to-target, and finger gestures. These methods were experimentally compared for their basic usability and the level of immersion in navigating in 3D space with six degrees of freedom. The results provide a valuable guideline for designing/choosing the proper navigation method under different navigational needs of the given VR application.

CAVE: Making Collective Virtual Narrative: Best Paper Award

Leonardo ◽  
2019 ◽  
Vol 52 (4) ◽  
pp. 349-356 ◽  
Author(s):  
Kris Layng ◽  
Ken Perlin ◽  
Sebastian Herscher ◽  
Corinne Brenner ◽  
Thomas Meduri
Keyword(s):  
Virtual Reality ◽  
Degrees Of Freedom ◽  
Paper Award ◽  
Six Degrees Of Freedom ◽  
The Social ◽  
Future Path ◽  
Shared Narrative ◽  
Specific Pairing

CAVE is a shared narrative six degrees of freedom (6DoF) virtual reality experience. In 3.5 days, 1,927 people attended its premiere at SIGGRAPH 2018. Thirty participants at a time each saw and heard the same narrative from their own individual location in the room, as they would when attending live theater. CAVE set out to disruptively change how audiences collectively experience immersive art and entertainment. Inspired by the social gatherings of theater and cinema, CAVE resonated with viewers in powerful and meaningful ways. Its specific pairing of colocated audiences and physically shared immersive narrative suggests a possible future path for shared cinematic experiences.

scholarly journals Perceptual Study of Near-Field Binaural Audio Rendering in Six-Degrees-of-Freedom Virtual Reality

2019 ◽  
Author(s):  
Olli S. Rummukainen ◽  
Sebastian J. Schlecht ◽  
Thomas Robotham ◽  
Axel Plinge ◽  
Emanuel A.P. Habets
Keyword(s):  
Virtual Reality ◽  
Degrees Of Freedom ◽  
Near Field ◽  
Six Degrees Of Freedom ◽  
Audio Rendering

Monitoring System for the Totally Implantable Ventricular Assist System by Use of Sensors for Virtual Reality

1998 ◽  
Vol 21 (6) ◽  
pp. 348-352 ◽  
Author(s):  
T. Yambe ◽  
S. Kobayashi ◽  
S. Nanka ◽  
M. Yoshizawa ◽  
K. Tabayashi ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Artificial Heart ◽  
Degrees Of Freedom ◽  
Implantable Devices ◽  
Artificial Organs ◽  
Ventricular Assist ◽  
3 Dimensional ◽  
Six Degrees Of Freedom ◽  
Driving Condition ◽  
Electro Magnetic

For the development of the totally implantable artificial organs, it is an important problem to monitor the conditions of the implantable devices, especially when used in clinical cases. In this study, we used position sensors for the 3-dimensional (3-D) virtual reality (VR) system monitor an implantable artificial heart. The sensors used in the experiments were 3-space Fastrak (Polhemus, USA). The position sensors using electro-magnetic forces were attached to the inner actuating zone. Sensitivity of the position sensors was in the order of around 0.8 mm. By use of these VR position sensors, we could easily detect the six degrees of freedom as x,y,z, and pitch, yaw, roll of these sensors. Experimental evaluation using a model circulation loop and healthy adult goats was performed. Experimental results suggest that our newly developed implantable sensors for monitoring the implantable artificial heart system were useful for sensing driving condition, thus possibly useful for the implantable devices for clinical usage.

scholarly journals Interdisciplinary Product Development - Virtual Reality Application in FMEA

2013 ◽  
Vol 1 (1) ◽  
pp. 59-67
Author(s):  
Toni Eiselt ◽  
Holger Zickner ◽  
Juliane Schuldt ◽  
Sophie Gröger ◽  
Dieter Weidlich
Keyword(s):  
Virtual Reality ◽  
Degrees Of Freedom ◽  
Three Dimensional ◽  
Interdisciplinary Team ◽  
Mechatronic Systems ◽  
Six Degrees Of Freedom ◽  
Stage Of Development ◽  
University Of Technology ◽  
Complex Mechanical Systems ◽  
Three Dimensional Presentation

In applying quality management (QM) methods, as for instance the Failure Mode and Effects Analysis (FMEA) in the field of complex mechatronic systems, it is necessary to visually illustrate the system to be examined to all members of the interdisciplinary team. Using Virtual Reality (VR) in combination with QM methods creates conditions that help the team to improve the application of QM methods considerably. VR is particularly suitable to visualize complex mechanical systems due to its realistic three-dimensional presentation of single components, assemblies, and complete systems in combination with the interaction in all six degrees of freedom. The present article presents goals and results of a research project at Chemnitz University of Technology. One result is that all members of the interdisciplinary team easily gain insight into the stage of development when FMEA is supported by Virtual Reality.

scholarly journals Reducing Cybersickness in 360-Degree Virtual Reality

2021 ◽  
pp. 1-17
Author(s):  
Iqra Arshad ◽  
Paulo De Mello ◽  
Martin Ender ◽  
Jason D. McEwen ◽  
Elisa R. Ferré
Keyword(s):  
Heart Rate ◽  
Virtual Reality ◽  
Degrees Of Freedom ◽  
Simulator Sickness ◽  
Six Degrees Of Freedom ◽  
Head Mounted Display ◽  
Motion System ◽  
Translational Movement ◽  
Vestibular Cues ◽  
Self Motion

Abstract Despite the technological advancements in Virtual Reality (VR), users are constantly combating feelings of nausea and disorientation, the so-called cybersickness. Cybersickness symptoms cause severe discomfort and hinder the immersive VR experience. Here we investigated cybersickness in 360-degree head-mounted display VR. In traditional 360-degree VR experiences, translational movement in the real world is not reflected in the virtual world, and therefore self-motion information is not corroborated by matching visual and vestibular cues, which may trigger symptoms of cybersickness. We evaluated whether a new Artificial Intelligence (AI) software designed to supplement the 360-degree VR experience with artificial six-degrees-of-freedom motion may reduce cybersickness. Explicit (simulator sickness questionnaire and Fast Motion Sickness (FMS) rating) and implicit (heart rate) measurements were used to evaluate cybersickness symptoms during and after 360-degree VR exposure. Simulator sickness scores showed a significant reduction in feelings of nausea during the AI-supplemented six-degrees-of-freedom motion VR compared to traditional 360-degree VR. However, six-degrees-of-freedom motion VR did not reduce oculomotor or disorientation measures of sickness. No changes were observed in FMS and heart rate measures. Improving the congruency between visual and vestibular cues in 360-degree VR, as provided by the AI-supplemented six-degrees-of-freedom motion system considered, is essential for a more engaging, immersive and safe VR experience, which is critical for educational, cultural and entertainment applications.

scholarly journals Antioxidants, Dietary Fatty Acids, and Sperm: A Virtual Reality Applied Game for Scientific Dissemination

2019 ◽  
Vol 2019 ◽  
pp. 1-4
Author(s):  
Giulia Collodel ◽  
Maurizio Masini ◽  
Cinzia Signorini ◽  
Elena Moretti ◽  
Cesare Castellini ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Degrees Of Freedom ◽  
Dietary Habits ◽  
Scientific Data ◽  
Dietary Fatty Acids ◽  
Simulation Game ◽  
3D Space ◽  
Dietary Choices ◽  
Sperm Plasma Membrane ◽  
The University

Fatty acid (FA) profile appears to be critical to infertility, and the effects of dietary FAs on sperm FA content are a current focus of studies in the field of nutrition and reproduction. Starting from a validated “OXISTRESS” model in which modification of FA content results to influence reactive oxygen species, antioxidants, isoprostanes, cytokines, sperm kinetic, and acrosome reaction, we developed a virtual reality game where the player, in order to improve the health of some virtual spermatozoa, is called to take dietary choices and then discover their consequences on the main biological aspects. In the LabVR of the University of Siena, a team of VR environment designer and developer used Unity development engine to make the experience run on Oculus Quest and a wireless 6DOF (six degrees of freedom of movement in 3D space) VR Headset. In the game, the player is immersed in the epididymis and observes closer how dietary n-3 may change the sperm plasma membrane and consequently modify sperm traits. A simulation game in the virtual reality may represent a tool to give greater visibility to scientific data in the relevance of appropriate dietary habits in the human health.

Design of Platform for Hydraulic Manipulator Virtual Reality Interactive and Comprehensive Experiment

2015 ◽  
Vol 741 ◽  
pp. 495-499
Author(s):  
Cun Gen Liu ◽  
Tao Wang ◽  
Ying Zhang ◽  
Yuan Liu
Keyword(s):  
Virtual Reality ◽  
Research And Development ◽  
Degrees Of Freedom ◽  
Experimental System ◽  
Time Dynamic ◽  
Six Degrees Of Freedom ◽  
Dynamic Display ◽  
Hydraulic Servo ◽  
Hydraulic Manipulator ◽  
Joint Classification

Platform for hydraulic manipulator virtual reality interactive and comprehensive experiment is a master-slave control of hydraulic manipulator servo control system requirement, considering the research and development of Hydraulic manipulator and being ready for pre-research and development of experimental system. According to the demand, the experimental platform can be replaced quickly by implementing agencies, including linear cylinder and swing cylinder and so on, based on analysis of static characteristics and dynamic characteristics for different composition of electro-hydraulic servo valve; It can also be used to simulate the movement of general six degrees of freedom manipulator, with functions of kinematics analysis and motion precision measurement; using virtual reality technology, through 3D virtual manipulator, it can be real-time dynamic display manipulator in space, and motion parameters of each joint. Classification number :TP242.6 Document code : A

Wire-Driven Pneumatic Actuation of a New 6-DOF Haptic Master

2006 ◽  
Author(s):  
Carlo Ferraresi ◽  
Massimiliana Carello ◽  
Francesco Pescarmona ◽  
Roberto Grassi
Keyword(s):  
Virtual Reality ◽  
Degrees Of Freedom ◽  
Force Feedback ◽  
Angular Displacement ◽  
Haptic Device ◽  
The Other ◽  
Six Degrees Of Freedom ◽  
Pneumatic Actuation ◽  
Virtual Device ◽  
Other Hand

The paper presents the results of a work carried out by the Department of Mechanics of Politecnico di Torino, concerning the study and development of a six degrees of freedom force reflecting master structure for teleoperation (haptic device) to be controlled by an operator. The latter imposes the six-dimensional linear and angular displacement of a handle, controlling a remote slave robot or interacting with virtual reality. On the other hand, the operator receives a force feedback related to the environment in which the slave robot or virtual device operates. Since the actuators must be force controlled in order to generate a resultant corresponding to the desired wrench, pneumatic actuation has been chosen because it is particularly suitable to the application and quite economical.

scholarly journals Smart-E An Autonomous Omnidirectional Underwater Robot

2013 ◽  
Vol 4 (4) ◽  
Author(s):  
Benjamin Meyer ◽  
Kristian Ehlers ◽  
Christoph Osterloh ◽  
Erik Maehle
Keyword(s):  
Degrees Of Freedom ◽  
Autonomous Underwater Vehicles ◽  
Computer Engineering ◽  
Six Degrees Of Freedom ◽  
3D Space ◽  
Main Challenge ◽  
Minimal Configuration ◽  
Six Dof ◽  
Underwater Movement ◽  
The University

AbstractThe survey of waterbodies or underwater installations is a challenging task. To reduce the danger for divers, Autonomous Underwater Vehicles (AUVs) can be deployed. These requires a high manoeuvrability and agility in order to provide access in hard-to-reach areas. Smart-E is an omnidirectional AUV designed and developed at the Institute of Computer Engineering of the University of Luebeck. The drive is realized by the minimal configuration of three thrusters that are arranged at 120º to each other. To achieve omnidirectional movement in the 3D space, each motor pivots through 180º around its radial axis with the aid of a servo motor. This leads to a manoeuvrability of six degrees of freedom (DOF). Smart-E is equipped with various sensors like a pressure and temperature sensor, a 360º scanning sonar, an IMU-AHRS system and a tilt camera unit at the bottom. Besides the autonomous behaviors, the main challenge is to control all six DOF of the AUV to achieve a smooth and controllable omnidirectional underwater movement even in rough environments.

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