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About

Miguel Melo is a Post-Doc Researcher in the MASSIVE VR Lab at INESC TEC in Portugal. He has a PhD from the University of Trás-os-Montes and Alto Douro, the topic of which was “HDR Video for Mobile Devices”. He has published several papers on HDR imaging and developed a novel HDR video player for mobile devices. He is currently involved in a number of international projects in the fields of multisensory virtual reality and HDR video.

Interest
Topics
Details

Details

  • Name

    Miguel Correia Melo
  • Cluster

    Computer Science
  • Role

    Researcher
  • Since

    01st November 2010
001
Publications

2018

The effects of body position on Reflexive Motor Acts and the sense of presence in virtual environments

Authors
Bessa, M; Melo, M; Augusto de Sousa, AA; Vasconcelos Raposo, J;

Publication
Computers and Graphics (Pergamon)

Abstract
The purpose of this study was to measure the subject's sense of presence while they performed a task (riding a bicycle downhill) in a virtual reality (VR) environment and to compare it by body position (standing vs. sitting) and gender. The sample consisted of 35 subjects (19 male and 16 female) between 17 and 33 years of age. A translated and validated Portuguese version of the Igroup Presence Questionnaire (IPQp) and the Reflexive Motor Acts (RMAs), based on direct observation, were used as metrics. The results showed significant differences between body position at the level of Experienced Realism, Spatial Presence and Overall Sense of Presence. When measuring RMAs, it was demonstrated that people in the sitting position presented a higher frequency. We concluded that body position influences perceptions of credibility, which has an impact on the sense of presence. No differences were identified between the genders. © 2017 Elsevier Ltd

2018

Adaptation and Validation of the Temple Presence Inventory in a Portuguese Population

Authors
Vasconcelos-Raposo, J; Bessa, M; Teixeira, CM; Cabral, L; Melo, M;

Publication
International Journal of Human–Computer Interaction

Abstract

2018

Immersive Edition of Multisensory 360 Videos

Authors
Coelho, H; Melo, M; Barbosa, L; Martins, J; Teixeira, MS; Bessa, M;

Publication
Trends and Advances in Information Systems and Technologies - Volume 2 [WorldCIST'18, Naples, Italy, March 27-29, 2018]

Abstract
The current technologic proliferation has originated new paradigms concerning the production and consumption of multimedia content. This paper proposes a multisensory 360 video editor that allows producers to edit such contents with high levels of customization. This authoring tool allows the edition and visualization of 360 video with the novelty of allowing to complement the 360 video with multiple stimuli such as audio, haptics, and olfactory. In addition to this multisensory feature, the authoring tool allows customizing individually each of the stimuli to provide an optimal multisensory user experience. A usability evaluation has revealed the pertinence of the editor, where it was verified an effectiveness rate of 100%, only one help request out of 10 participants, and positive efficiency. Satisfaction-wise, results equally revealed high level of satisfaction as the average score was 8.3 out of 10. © Springer International Publishing AG, part of Springer Nature 2018.

2018

Application of the steering law to virtual reality walking navigation interfaces

Authors
Monteiro, P; Carvalho, D; Melo, M; Branco, F; Bessa, M;

Publication
Computers and Graphics (Pergamon)

Abstract
Navigation through immersive virtual environments is a key concept for virtual reality as it allows users to explore those environments. Therefore, it is important to understand virtual reality navigation interfaces and their impact on the users’ experience. This paper presents an objective performance evaluation of two types of navigation: natural (real walking and walk-in-place) vs. unnatural (gamepad). Steering Law was the objective performance metric chosen since it captures the relationship between the time to travel a path and the difficulty of that path. In addition to performance, subjective metrics were also considered, namely the feeling of presence, cybersickness and user satisfaction. The experiments consisted of having participants complete a series of paths with different indexes of difficulty and the time that a participant took to walk each path was measured. Overall results show that the navigation through real walking yielded better results when it comes to performance, cybersickness, and user satisfaction than the walk-in-place and gamepad navigation interfaces. © 2018 Elsevier Ltd

2017

Context-aware HDR video distribution for mobile devices

Authors
Melo, M; Barbosa, L; Bessa, M; Debattista, K; Chalmers, A;

Publication
Multimedia Tools Appl.

Abstract
HDR video on mobile devices is in its infancy and there are no solutions yet that can achieve full HDR video reproduction due to computational power limitations. In this paper we present a novel and versatile solution that allows the delivery of HDR video on mobile devices by taking into account contextual information and retro-compatibility for devices that do not have the computational power to decode HDR video. The proposed solution also enables the remote transmission of HDR video to mobile devices in real-time. This context-aware HDR video distribution solution for mobile devices is evaluated and discussed by considering the impact of HDR videos over conventional low dynamic range videos on mobile devices as well as the challenge of playing HDR videos directly locally or remotely. © 2016 Springer Science+Business Media New York

Supervised
thesis

2017

Desenho e avaliação de ambientes virtuais multissensoriais

Author
Guilherme Santos Gonçalves

Institution
UTAD

2017

Realidade Mista - Utilização de objetos reais para controlo de ambientes

Author
Hugo Rafael Mendes Coelho

Institution
UTAD

2016

Utilização da resposta fisiológica em ambientes de realidade virtual para aumentar o envolvimento dos utilizadores

Author
Manuel Pinto

Institution
UTAD

2016

Ambientes virtuais multissensoriais: equivalência entre treino virtual e real

Author
David  Gonçalves Narciso

Institution
UTAD