A mixed reality telepresence system for collaborative space operation

This paper presents a Mixed Reality system that results from the integration of a telepresence system and an application to improve collaborative space exploration. The system combines free viewpoint video with immersive projection technology to support non-verbal communication, including eye gaze, inter-personal distance and facial expression. Importantly, these can be interpreted together as people move around the simulation, maintaining natural social distance. The application is a simulation of Mars, within which the collaborators must come to agreement over, for example, where the Rover should land and go. The first contribution is the creation of a Mixed Reality system supporting contextualization of non-verbal communication. Tw technological contributions are prototyping a technique to subtract a person from a background that may contain physical objects and/or moving images, and a light weight texturing method for multi-view rendering which provides balance in terms of visual and temporal quality. A practical contribution is the demonstration of pragmatic approaches to sharing space between display systems of distinct levels of immersion. A research tool contribution is a system that allows comparison of conventional authored and video based reconstructed avatars, within an environment that encourages exploration and social interaction. Aspects of system quality, including the communication of facial expression and end-to-end latency are reported

Participatory land management planning in biodiversity conservation areas of Lao PDR

The importance of integrating forest conservation and rural development objectives is much better understood today than in the past. Despite an increased understanding such integration in many countries remains poorly supported in terms of co-ordination between government agencies and stakeholders. Environmental degradation and loss of biodiversity conservation areas to competing alternative uses is widespread throughout the world and Lao PDR is no exception. The forest policy in Lao PDR has developed under the framework of international conventions. The protected area system has been established with the aim of conserving healthy and diverse forests. Rehabilitation and reforestation policies are important complements. The former “rules by decree” approach has been replaced by a set of laws and regulations. This thesis presents and discusses a management approach for biodiversity conservation areas in Lao PDR. As part of that, it highlights the significance of appropriate policies and legislation as a base for sustainable management, discusses various interdisciplinary and interactive planning methods tested in case studies, and analyses the utilisation of non-timber forest products as part of a strategy for sustainable management of biodiversity conservation areas. The integration of techniques from social sciences and natural sciences is emphasised to encourage local participation in managing the conservation areas. Participatory Rural Appraisal, simple sampling methods, and remote sensing were used in the studies. A simple simulation model (the Area Production Model) strengthened the inter-action process. The integrated and cross-sectoral approach turned out to be simple, flexible and dynamic. The recognition of non-timber forest products (NTFPs) plays an important role in the conservation and development of protected area management. A literature review was made to gain insight into the research trend in Southeast Asia in terms of tenure rights of NTFPs and the way people utilise them. Quantitative resource assessment is an important part in sustainable management. In a case study, a participatory two-phase sampling approach for cardamom assessment was developed and tested with a promising result

Toward hyper-realistic and interactive social VR experiences in live TV scenarios

© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Social Virtual Reality (VR) allows multiple distributed users getting together in shared virtual environments to socially interact and/or collaborate. This article explores the applicability and potential of Social VR in the broadcast sector, focusing on a live TV show use case. For such a purpose, a novel and lightweight Social VR platform is introduced. The platform provides three key outstanding features compared to state-of-the-art solutions. First, it allows a real-time integration of remote users in shared virtual environments, using realistic volumetric representations and affordable capturing systems, thus not relying on the use of synthetic avatars. Second, it supports a seamless and rich integration of heterogeneous media formats, including 3D scenarios, dynamic volumetric representation of users and (live/stored) stereoscopic 2D and 180º/360º videos. Third, it enables low-latency interaction between the volumetric users and a video-based presenter (Chroma keying), and a dynamic control of the media playout to adapt to the session’s evolution. The production process of an immersive TV show to be able to evaluate the experience is also described. On the one hand, the results from objective tests show the satisfactory performance of the platform. On the other hand, the promising results from user tests support the potential impact of the presented platform, opening up new opportunities in the broadcast sector, among others.This work has been partially funded by the European Union’s Horizon 2020 program, under agreement nº 762111 (VRTogether project), and partially by ACCIÓ, under agreement COMRDI18-1-0008 (ViVIM project). Work by Mario Montagud has been additionally funded by the Spanish Ministry of Science, Innovation and Universities with a Juan de la Cierva – Incorporación grant (reference IJCI-2017-34611). The authors would also like to thank the EU H2020 VRTogether project consortium for their relevant and valuable contributions.Peer ReviewedPostprint (author's final draft

Real-time Visual Representations for Mixed Reality Remote Collaboration

We present a prototype Mixed Reality (MR) system with a hybrid interface to support remote collaboration between a local worker and a remote expert in a large-scale work space. By combining a low-resolution 3D point-cloud of the environment surrounding the local worker with a high-resolution real-time view of small focused details, the remote expert can see a virtual copy of the local workspace with an independent viewpoint control. Meanwhile, the export can also check the current actions of the local worker through a real-time feedback view. We conducted a pilot study to evaluate the usability of our system by comparing the performance of three different interface designs (showing the real-time view in forms of 2D first-person view, a 2D third-person view and a 3D point cloud view). We found no difference in average task performance time between the three interfaces, but there was a difference in user preference

Mixed Reality for supporting Remote-Meetings

Nowadays meetings are no longer physically tied to one place. Especially in knowledge work, telephone calls or Skype conferences have long since complemented classic face-to-face meetings. Various research discourses, especially computer-supported group work, have been investigating for almost three decades how distributed group work can be supported in its various forms using IT. With the increasing performance of technologies focusing on Augmented Reality (AR) and Virtual Reality (VR), new possibilities have been added that offer a high potential for supporting distributed meetings. With this prototype, we present an approach that combines AR and VR to implement a communication system with various collaboration options for the appropriate support of distributed meetings. Our prototype focuses on scenarios in which two or more people are in the same room and one or more people are absent physically, but both parties can still cooperate remotely at the same time

JISC Preservation of Web Resources (PoWR) Handbook

Handbook of Web Preservation produced by the JISC-PoWR project which ran from April to November 2008. The handbook specifically addresses digital preservation issues that are relevant to the UK HE/FE web management community”. The project was undertaken jointly by UKOLN at the University of Bath and ULCC Digital Archives department

Understanding Context to Capture when Reconstructing Meaningful Spaces for Remote Instruction and Connecting in XR

Recent technological advances are enabling HCI researchers to explore interaction possibilities for remote XR collaboration using high-fidelity reconstructions of physical activity spaces. However, creating these reconstructions often lacks user involvement with an overt focus on capturing sensory context that does not necessarily augment an informal social experience. This work seeks to understand social context that can be important for reconstruction to enable XR applications for informal instructional scenarios. Our study involved the evaluation of an XR remote guidance prototype by 8 intergenerational groups of closely related gardeners using reconstructions of personally meaningful spaces in their gardens. Our findings contextualize physical objects and areas with various motivations related to gardening and detail perceptions of XR that might affect the use of reconstructions for remote interaction. We discuss implications for user involvement to create reconstructions that better translate real-world experience, encourage reflection, incorporate privacy considerations, and preserve shared experiences with XR as a medium for informal intergenerational activities.Comment: 26 pages, 5 figures, 4 table

Towards Outdoor Collaborative Mixed Reality: Lessons Learnt from a Prototype System

Most research on collaborative mixed reality (CMR) has focused on indoor spaces. In this paper, we present our ongoing work aimed at investigating the potential of CMR in outdoor spaces. These spaces present unique challenges due to their larger and more complex nature, particularly in terms of reconstruction, tracking, and interaction. Our prototype system utilises a photorealistic model to facilitate collaboration between remote virtual reality (VR) users and a local augmented reality (AR) user. We discuss our design considerations, lessons learnt, and areas for future work