Classification of motor errors to provide real-time feedback for sports coaching in virtual reality — A case study in squats and Tai Chi pushes

AbstractThe following case study was carried out on a sample of one experimental and one control group. The participants of the experimental group watched the movie section from the standardized LATEMO-E database via virtual reality (VR) on Oculus Rift S and HTC Vive Pro devices. In the control group, the movie section was displayed on the LCD monitor. The movie section was categorized according to Ekman's and Russell's classification model of evoking an emotional state. The range of valence and arousal was determined in both observed groups. Valence and arousal were measured in each group using a Self-Assessment Manikin (SAM). The control group was captured by a camera and evaluated by Affdex software from Affectiva in order to compare valence values. The control group showed a very high correlation (0.92) between SAM and Affdex results. Having considered the Affdex results as a reference value, it can be concluded that SAM participants evaluated their emotions objectively. The results from both groups show that the movie section is supposed to evoke negative emotion. Negative emotion was perceived more intensely than its counterpart, positive emotion. Using virtual reality to evoke negative emotion (anger) has confirmed that VR triggers a significantly stronger intensity of emotion than LCD.

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Intangible Narratives; An investigation on immersive architectural visualisation in VR.

10.26686/wgtn.17134472 ◽

2021 ◽

Author(s):

◽

Kar Wing Leung

Keyword(s):

Virtual Reality ◽

Real Time ◽

Virtual Environment ◽

Google Earth ◽

Virtual Architecture ◽

Methods And Techniques ◽

Current Context ◽

Tool Set

Within the current context of digital architectural construction and immersive representation exists a problem of ‘ocularcentrism’ as defined by Pallasmaa. Recent immersive developments such as Google Earth VR, or Realities.io, focus primarily in working within the tangible experience, purely emphasising on geometric forms and physical artefacts. They largely ignore the more experiential and intangible qualities of space, which are crucial elements in a real embodied physical experience of architecture. Phenomenologists such as Pallasmaa, Holl, and Zumthor expand on this, identifying that architecture clearly exists as something beyond just the tangible. Architecture fundamentally is an experiential and spatial art, incorporating not just the geometric sense of space but also aspects of the intangible such as sound, movement, lighting and interaction. As a result of this tangible-bias, virtual-reality’s current use within architecture as an immersive medium is largely limited. Most developments can be described as ‘an immersive virtual photograph’ of architecture rather than an experience of one. This research is a response to studies that directly address the problem of ‘ocularcentrism’ while also exploring the methods and techniques that can translate intangible qualities into virtual architecture. Utilising a Real-Time Virtual Environment (RTVE) and Virtual Reality (VR) tool set, this paper virtually reconstructs the case study of the Kowloon Walled City. It proposes a novel working methodology for immersive architectural visualisation with VR and adds to the on-going research in the field of phenomenology within architecture.

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Experimental Setup and Case Study Example

Applications and Developments in Semantic Process Mining - Advances in Data Mining and Database Management ◽

10.4018/978-1-7998-2668-2.ch006 ◽

2020 ◽

pp. 168-180

Keyword(s):

Real Time ◽

Learning Process ◽

Process Mining ◽

Process Models ◽

Experimental Setup ◽

Main Components ◽

The Individual

This chapter represents as a practical follow-up or implementation of the main components of the SPMaAF described in Chapter 5. In the experimental setup, the chapter demonstrates by using the case study of the learning process: the development and application of the semantic-based process mining. Essentially, the chapter looks at how the proposed semantic-based process mining and analysis framework (SPMaAF) is applied to answer real-time questions about any given process domain, as well as the classification of the individual process instances or elements that constitutes process models. This includes the semantic representations and modelling of the learning process in order to allow for an abstraction analysis of the resultant models. The chapter finalizes with a conceptual description of the resultant semantic fuzzy mining approach which is discussed in detail in the next chapter.

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Listening, Corporeality, Place and Presence

Exploration of Space, Technology, and Spatiality ◽

10.4018/978-1-60566-020-2.ch009 ◽

2010 ◽

pp. 113-127

Author(s):

Susan Turner

Keyword(s):

Virtual Reality ◽

Virtual Environments ◽

Film Studies ◽

Sense Of Presence ◽

Different Types ◽

Being There

This chapter considers the role of sound, and more specifically, listening, in creating a sense of presence (of “being there”) in “places” recreated by virtual reality technologies. We first briefly review the treatment of sound in place and presence research. Here we give particular attention to the role of sound in inducing a sense of presence in virtual environments that immerse their users in representations of particular places. We then consider the phenomenology of listening, the nature of different types of listening, and their application: listening is active, directed, intentional hearing, and is not merely egocentric, it is body-centric. A classification of modes of listening that draws on work in film studies, virtual reality, and audiology is then proposed as a means of supporting the design of place-centric virtual environments in providing an effective aural experience. Finally, we apply this to a case study of listening in real and simulated soundscapes, and suggest directions for further applications of this work

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RECREATING CULTURAL HERITAGE ENVIRONMENTS FOR VR USING PHOTOGRAMMETRY

ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ◽

10.5194/isprs-archives-xlii-2-w9-305-2019 ◽

2019 ◽

Vol XLII-2/W9 ◽

pp. 305-310 ◽

Cited By ~ 7

Author(s):

A. Dhanda ◽

M. Reina Ortiz ◽

A. Weigert ◽

A. Paladini ◽

A. Min ◽

...

Keyword(s):

Virtual Reality ◽

Cultural Heritage ◽

Real Time ◽

Structure From Motion ◽

Degrees Of Freedom ◽

Six Degrees Of Freedom ◽

Whole Space ◽

Optimized Model ◽

Normal Maps

Abstract. In this paper, we propose a workflow for recreating places of cultural heritage in Virtual Reality (VR) using structure from motion (SfM) photogrammetry. The unique texture of heritage places makes them ideal for full photogrammetric capture. An optimized model is created from the photogrammetric data so that it is small enough to render in a real-time environment. The optimized model, combined with mesh maps (texture maps, normal maps, etc.) looks like the original high detail model. The capture of a whole space makes it possible to create a VR experience with six degrees of freedom (6DoF) that allows the user to explore the historic place. Creating these experiences can bring people to cultural heritage that is either endangered or too remote for some people to access. The workflow described in this paper will be demonstrated with the case study of Myin-pya-gu, an 11th century temple in Bagan, Myanmar.

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Intangible Narratives; An investigation on immersive architectural visualisation in VR.

10.26686/wgtn.17134472.v1 ◽

2021 ◽

Author(s):

◽

Kar Wing Leung

Keyword(s):

Virtual Reality ◽

Real Time ◽

Virtual Environment ◽

Google Earth ◽

Virtual Architecture ◽

Methods And Techniques ◽

Current Context ◽

Tool Set

Within the current context of digital architectural construction and immersive representation exists a problem of ‘ocularcentrism’ as defined by Pallasmaa. Recent immersive developments such as Google Earth VR, or Realities.io, focus primarily in working within the tangible experience, purely emphasising on geometric forms and physical artefacts. They largely ignore the more experiential and intangible qualities of space, which are crucial elements in a real embodied physical experience of architecture. Phenomenologists such as Pallasmaa, Holl, and Zumthor expand on this, identifying that architecture clearly exists as something beyond just the tangible. Architecture fundamentally is an experiential and spatial art, incorporating not just the geometric sense of space but also aspects of the intangible such as sound, movement, lighting and interaction. As a result of this tangible-bias, virtual-reality’s current use within architecture as an immersive medium is largely limited. Most developments can be described as ‘an immersive virtual photograph’ of architecture rather than an experience of one. This research is a response to studies that directly address the problem of ‘ocularcentrism’ while also exploring the methods and techniques that can translate intangible qualities into virtual architecture. Utilising a Real-Time Virtual Environment (RTVE) and Virtual Reality (VR) tool set, this paper virtually reconstructs the case study of the Kowloon Walled City. It proposes a novel working methodology for immersive architectural visualisation with VR and adds to the on-going research in the field of phenomenology within architecture.

Download Full-text