Avatars rendering and its effect on perceived realism in Virtual Reality

Molina, Elena Garcés; Jerez, Alejandro Rios; Pelechano, Nuria

doi:10.1109/aivr50618.2020.00046

Cited by 11 publications

(8 citation statements)

References 12 publications

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“…Another very interesting outcome of our study is that if we can only display locomotion animations, then improving the appearance of the avatars will not increase the overall realism of our simulated crowd. This finding is consistent with a previous study that we performed in an immersive VR emergency experiment, where they studied the differences in realism and presence when improving the appearance of the virtual characters [17].…”

Section: Discussionsupporting

confidence: 92%

The Impact of Animations in the Perception of a Simulated Crowd

Molina

Rios

Pelechano

2021

Advances in Computer Graphics

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Simulating virtual crowds is an important challenge in many areas such as games and virtual reality applications. A lot of effort has been dedicated to improving pathfinding, collision avoidance, or decision making, to achieve more realistic human-like behavior. However, crowd simulation will be far from appearing realistic as long as virtual humans are limited to walking animations. Including animation variety could greatly enhance the plausibility of the populated environment. In this paper, we evaluated to what extend animation variety can affect the perceived level of realism of a crowd, regardless of the appearance of the virtual agents (bots vs. humanoids). The goal of this study is to provide recommendations for crowd animation and rendering when simulating crowds. Our results show that the perceived realism of the crowd trajectories and animations is significantly higher when using a variety of animations as opposed to simply having locomotion animations, but only if we render realistic humanoids. If we can only render agents as bots, then there is no much gain from having animation variety, in fact, it could potentially lower the perceived quality of the trajectories.

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Section: Discussionsupporting

confidence: 92%

The Impact of Animations in the Perception of a Simulated Crowd

Molina

Rios

Pelechano

2021

Advances in Computer Graphics

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“…However, there is ongoing debate on the effect of the visual style on VR-based clinical outcomes. While some studies have found that greater realism in VR correlated with greater immersion and a sense of presence [ 31 , 32 ], others have found that clinical populations preferred simpler and more abstract visuals [ 33 , 34 ]. Future studies should evaluate components of photorealism as they apply to VR experiences and clinical outcomes.…”

Section: Discussionmentioning

confidence: 99%

Characterizing Consumer Smartphone Apps for Virtual Reality–Based Exposure Therapy: Content Analysis

Sunkara¹,

Thakkar²,

Ong³

et al. 2023

J Med Internet Res

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Background In vivo exposure therapy is the most effective treatment for phobias but is often impractical. Virtual reality exposure therapy (VRET) can help overcome critical barriers to in vivo exposure therapy. However, accessible mobile software related to VRET is not well understood. Objective The purpose of our study is to describe the landscape of accessible smartphone apps with potential utility for clinical VRET. Methods We conducted a content analysis of publicly available smartphone apps related to virtual reality on the Google Play Store and the Apple App Store as of March 2020. Results The initial search yielded 525 apps, with 84 apps (52 on the Google Play Store and 32 on the Apple App Store) included for analysis. The most common phobic stimulus depicted was bodies of water or weather events (25/84, 29.8%), followed by heights (24/84, 28.6%), and animals (23/84, 27.4%). More than half of the apps were visually abstract (39/84, 53.5%). Most apps were free to use (48/84, 57.1%), while the rest were free to try (22/84, 26.2%) or required payment for use (14/84, 16.7%), with the highest cost for use being US $6. The average overall app rating was 2.9 stars out of 5, but the number of ratings ranged from 0 to 49,233. None of the 84 apps advertised compliance with the Health Insurance Portability and Accountability Act, offered the ability to monitor data, provided clinician control over variables in the app experiences, or explicitly stated use by or development with clinicians. Conclusions None of the smartphone apps reviewed were explicitly developed for phobia therapy. However, 16 of the 84 included apps were considered ideal candidates to investigate further as part of treatment due to their accessibility, depiction of phobia-relevant stimuli, low or no cost, and high user scores. Most of these apps were visually abstract and free to use, making them accessible and potentially flexible as part of clinical exposure hierarchies. However, none of the apps were designed for clinical use, nor did they provide tools for clinician workflows. Formal evaluation of these accessible smartphone apps is needed to understand the clinical potential of accessible VRET solutions.

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“…When individuals immerse themselves in virtual reality scenarios, their perceptions may mimic those in the real world. 17,18 For example, Martin, V. investigated how acoustic cues are interpreted in virtual reality settings to generate auditory distance judgments and enhance the realism of the virtual sound events within the environment. 19 However, the question of whether the design of virtual reality scenarios can ensure that participants genuinely perceive the plausibility of the scene remains unanswered.…”

Section: Introductionmentioning

confidence: 99%

“…Today, virtual reality technology has been employed to aid designers in spatial optimization. When individuals immerse themselves in virtual reality scenarios, their perceptions may mimic those in the real world 17,18 . For example, Martin, V. investigated how acoustic cues are interpreted in virtual reality settings to generate auditory distance judgments and enhance the realism of the virtual sound events within the environment 19 .…”

Section: Introductionmentioning

confidence: 99%

Feasibility study of virtual reality in audiovisual environment: Assessment of university cafeteria acoustic environment

Zehua,

Xiaoyang

2024

Computer Animation & Virtual

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This study primarily focuses on investigating whether virtual reality scenarios can authentically replicate real‐life audio‐visual environments. The authenticity of audio‐visual environments plays a crucial role in both the design and VR fields today. Only when the authenticity of audio‐visual interactive experiences is validated as feasible can virtual reality technology demonstrate positive impacts. We assessed the annoyance levels subjectively under different audio‐visual conditions: a real cafeteria environment and a simulated cafeteria environment. Participants were tasked with the same activities in both environments. After each experiment, they indicated their levels of annoyance by completing a questionnaire. The results indicated a significant positive correlation between the overall subjective annoyance levels in both experiments and the subjective annoyance levels associated with different behaviors. This suggests that under identical audio conditions, virtual reality scenarios more effectively replicate the real noise environment. Furthermore, we have uncovered that certain objective factors influence the expression of authenticity. Optimizing these factors may potentially further enhance the feasibility of virtual reality technology in audio‐visual environments.

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Avatars rendering and its effect on perceived realism in Virtual Reality

Cited by 11 publications

References 12 publications

The Impact of Animations in the Perception of a Simulated Crowd

The Impact of Animations in the Perception of a Simulated Crowd

Characterizing Consumer Smartphone Apps for Virtual Reality–Based Exposure Therapy: Content Analysis

Feasibility study of virtual reality in audiovisual environment: Assessment of university cafeteria acoustic environment

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