Discrete Viewpoint Control to Reduce Cybersickness in Virtual Environments

Farmani, Yasin

doi:10.22215/etd/2018-12917

Cited by 3 publications

(3 citation statements)

References 52 publications

(148 reference statements)

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“…Recent studies have evaluated methods focusing on content. These methods investigated the use of dynamic blurring with retinal tracking [14], optical flow reduction of peripheral vision [15], field of view control [16], and viewpoint snapping [17].…”

Section: Introductionmentioning

confidence: 99%

Using Visual Guides to Reduce Virtual Reality Sickness in First-Person Shooter Games: Correlation Analysis

et al. 2021

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Background The virtual reality (VR) content market is rapidly growing due to an increased supply of VR devices such as head-mounted displays (HMDs), whereas VR sickness (reported to occur while experiencing VR) remains an unsolved problem. The most widely used method of reducing VR sickness is the use of a rest frame that stabilizes the user's viewpoint by providing fixed visual stimuli in VR content (including video). However, the earth-fixed grid and natural independent visual background that are widely used as rest frames cannot maintain VR fidelity, as they reduce the immersion and the presence of the user. A visual guide is a visual element (eg, a crosshair of first-person shooter [FPS]) that induces a user's gaze movement within the VR content while maintaining VR fidelity, whereas there are no studies on the correlation of visual guide with VR sickness. Objective This study aimed to analyze the correlation between VR sickness and crosshair, which is widely used as a visual guide in FPS games. Methods Eight experimental scenarios were designed and evaluated, including having the visual guide on/off, the game controller on/off, and varying the size and position of the visual guide to determine the effect of visual guide on VR sickness. Results The results showed that VR sickness significantly decreased when visual guide was applied in an FPS game. In addition, VR sickness was lower when the visual guide was adjusted to 30% of the aspect ratio and positioned in the head-tracking direction. Conclusions The experimental results of this study indicate that the visual guide can achieve VR sickness reduction while maintaining user presence and immersion in the virtual environment. In other words, the use of a visual guide is expected to solve the existing limitation of distributing various types of content due to VR sickness.

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Section: Introductionmentioning

confidence: 99%

Using Visual Guides to Reduce Virtual Reality Sickness in First-Person Shooter Games: Correlation Analysis

et al. 2021

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“…Many current VR games use teleportation-based interaction technique [5,7,15,30]. Studies show that the pointto-teleport technique reduces cybersickness [25], as do other teleport-based locomotion techniques such as translation snapping or dash locomotion [24], and out-of-body locomotion [32], making it suitable for games in many genres. While this is an advantage, there are other usability considerations.…”

Section: Chapter 1: Introductionmentioning

confidence: 99%

“…The convergent parallel typology is a subtype of triangulation designs that Creswell[24] recommends when "a researcher wants to directly compare and contrast quantitative statistical results with qualitative findings or to validate or expand quantitative results with qualitative data." To guide our analysis when merging andinterpreting the qualitative and quantitative results, we added a set of mixed methods research questions.…”

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confidence: 99%

Controlling VR Games: Control Schemes and the Player Experience

Martel¹

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Control schemes are central to the user experience in video games as they determine the quality of a user's interaction with the game world. Since the 1990's, desktop 3D games have adopted the "mouselook" scheme, in which the mouse simultaneously rotates the camera view, aims and steers the avatar. However, virtual reality games do not yet have a standard control scheme and require a different approach in order to integrate input from the head-mounted display, an additional input device not present in desktop 3D games. To address this gap, we conducted two mixed-methods studies to evaluate the usability of control schemes for controller-based VR games in the FPS genre. The first study used keyboard and mouse and the second used Oculus Touch motion controllers as input devices. User study 1 showed that "coupled" control schemes in which the camera view and steering the avatar were controlled by both the mouse and head-mounted display were most usable. Study 2 showed that both the coupled and "decoupled" schemes were usable, although some users found the decoupled scheme disorienting.

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A cybersickness review: causes, strategies, and classification methods

Porcino

Trevisan

Clua

2021

JIS

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Virtual reality (VR) and head-mounted displays are continually gaining popularity in various fields such as education, military, entertainment, and health. Although such technologies provide a high sense of immersion, they can also trigger symptoms of discomfort. This condition is called cybersickness (CS) and is quite popular in recent virtual reality research. In this work we first present a review of the literature on theories of discomfort manifestations usually attributed to virtual reality environments. Following, we reviewed existing strategies aimed at minimizing CS problems and discussed how the CS measurement has been conducted based on subjective, biosignal (or objective), and users profile data. We also describe and discuss related works that are aiming to mitigate cybersickness problems using deep and symbolic machine learning approaches. Although some works used methods to make deep learning explainable, they are not strongly affirmed by literature. For this reason in this work we argue that symbolic classifiers can be a good way to identify CS causes, once they possibilities human-readability which is crucial for analyze the machine learning decision paths. In summary, from a total of 157 observed studies, 24 were excluded. Moreover, we believe that this work facilitates researchers to identify the leading causes for most discomfort situations in virtual reality environments, associate the most recommended strategies to minimize such discomfort, and explore different ways to conduct experiments involving machine learning to overcome cybersickness.

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Discrete Viewpoint Control to Reduce Cybersickness in Virtual Environments

Cited by 3 publications

References 52 publications

Using Visual Guides to Reduce Virtual Reality Sickness in First-Person Shooter Games: Correlation Analysis

Using Visual Guides to Reduce Virtual Reality Sickness in First-Person Shooter Games: Correlation Analysis

Controlling VR Games: Control Schemes and the Player Experience

A cybersickness review: causes, strategies, and classification methods

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