VRate: A Unity3D Asset for integrating Subjective Assessment Questionnaires in Virtual Environments

Regal, Georg; Schatz, Raimund; Schrammel, Johann; Suette, Stefan

doi:10.1109/qomex.2018.8463296

Cited by 29 publications

(9 citation statements)

References 7 publications

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“…Moreover, due to the lack of a common understanding and definition of the terms presence and immersion, a plenitude of different questionnaires have been developed. Recently, questionnaires that have proven their effectiveness via penand-paper assessments have also been integrated into virtual reality [33][34][35], hence reducing study duration and discomfort to the users [36]. Here, we focus on four aspects of IMEx measured from subjective assessments, including: sense of presence and perception of immersion, user quality of experience, cybersickness, and mental/affective state.…”

Section: Subjective Imex Assessmentmentioning

confidence: 99%

Immersive media experience: a survey of existing methods and tools for human influential factors assessment

2022

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Virtual reality (VR) applications, especially those where the user is untethered to a computer, are becoming more prevalent as new hardware is developed, computational power and artificial intelligence algorithms are available, and wireless communication networks are becoming more reliable, fast, and providing higher reliability. In fact, recent projections show that by 2022 the number of VR users will double, suggesting the sector was not negatively affected by the worldwide COVID-19 pandemic. The success of any immersive communication system is heavily dependent on the user experience it delivers, thus now more than ever has it become crucial to develop reliable models of immersive media experience (IMEx). In this paper, we survey the literature for existing methods and tools to assess human influential factors (HIFs) related to IMEx. In particular, subjective, behavioural, and psycho-physiological methods are covered. We describe tools available to monitor these HIFs, including the user's sense of presence and immersion, cybersickness, and mental/affective states, as well as their role in overall experience. Special focus is placed on psycho-physiological methods, as it was found that such in-depth evaluation was lacking from the existing literature. We conclude by touching on emerging applications involving multiple-sensorial immersive media and provide suggestions for future research directions to fill existing gaps. It is hoped that this survey will be useful for researchers interested in building new immersive (adaptive) applications that maximize user experience.

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Section: Subjective Imex Assessmentmentioning

confidence: 99%

Immersive media experience: a survey of existing methods and tools for human influential factors assessment

2022

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“…To vote, the subject selects and saves the score using the trigger of the HTC Vive controller. As in [41], to facilitate the interaction with the rating panel, we attached a laser beam to the controller. Figure 3 illustrates the experimental environment.…”

Section: Experimental Procedures and Apparatusmentioning

confidence: 99%

Visual Quality of 3D Meshes With Diffuse Colors in Virtual Reality: Subjective and Objective Evaluation

Nehmé

Dupont

Farrugia

et al. 2021

IEEE Trans. Visual. Comput. Graphics

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Surface meshes associated with diffuse texture or color attributes are becoming popular multimedia contents. They provide a high degree of realism and allow six degrees of freedom (6DoF) interactions in immersive virtual reality environments. Just like other types of multimedia, 3D meshes are subject to a wide range of processing, e.g., simplification and compression, which result in a loss of quality of the final rendered scene. Thus, both subjective studies and objective metrics are needed to understand and predict this visual loss. In this work, we introduce a large dataset of 480 animated meshes with diffuse color information, and associated with perceived quality judgments. The stimuli were generated from 5 source models subjected to geometry and color distortions. Each stimulus was associated with 6 hypothetical rendering trajectories (HRTs): combinations of 3 viewpoints and 2 animations. A total of 11520 quality judgments (24 per stimulus) were acquired in a subjective experiment conducted in virtual reality. The results allowed us to explore the influence of source models, animations and viewpoints on both the quality scores and their confidence intervals. Based on these findings, we propose the first metric for quality assessment of 3D meshes with diffuse colors, which works entirely on the mesh domain. This metric incorporates perceptually-relevant curvature-based and color-based features. We evaluate its performance, as well as a number of Image Quality Metrics (IQMs), on two datasets: ours and a dataset of distorted textured meshes. Our metric demonstrates good results and a better stability than IQMs. Finally, we investigated how the knowledge of the viewpoint (i.e., the visible parts of the 3D model) may improve the results of objective metrics.

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“…In recent years, there has been a growing number of scientific resources similar to the Hafnia Hands. For example, Regal et al (2018) made assets available that make it easier to integrate questionnaires into VR scenes. With NavWell, Commins et al (2020) released a tool for creating and running navigation experiments.…”

Section: Vr Assets As Research Artifactsmentioning

confidence: 99%

Hafnia Hands: A Multi-Skin Hand Texture Resource for Virtual Reality Research

Pohl

Mottelson

2022

Front. Virtual Real.

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We created a hand texture resource (with different skin tone versions as well as non-human hands) for use in virtual reality studies. This makes it easier to run lab and remote studies where the hand representation is matched to the participants’ own skin tone. We validate that the virtual hands with our textures align with participants’ view of their own real hands and allow to create VR applications where participants have an increased sense of body ownership. These properties are critical for a range of VR studies, such as of immersion.

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VRate: A Unity3D Asset for integrating Subjective Assessment Questionnaires in Virtual Environments

Cited by 29 publications

References 7 publications

Immersive media experience: a survey of existing methods and tools for human influential factors assessment

Immersive media experience: a survey of existing methods and tools for human influential factors assessment

Visual Quality of 3D Meshes With Diffuse Colors in Virtual Reality: Subjective and Objective Evaluation

Hafnia Hands: A Multi-Skin Hand Texture Resource for Virtual Reality Research

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