Category Archives: Virtual Reality

Microsoft’s Vision for Mixed and Mixing Realities

A couple of days ago the RoadtoVR website posted about Microsoft’s parent for a wand like controller which appeared in the concept video above. I thought it was worth re-posting the video here as it provides a good indication of what a mixed reality future might look like. In particular it considers a future where augmented and virtual reality systems are used side by side. Where some companies firmly backed one platform or the other, VR in the case of Oculus and the HTC Vive, AR in the case of Meta, more established companies like Microsoft and Google have the resources and brand penetration to back both. Whether Apple follows suite or commits everything to AR following the recent release of ARKit remains to be seen. As such it is interesting to compare the kind of mixed reality ecosystems they want to create. Its then up to developers and consumers to determine which hardware, and by extension which vision, they are most inclined to back.

There are many challenges to overcome before this kind of mixed reality interaction becomes possible. The situated use of AR by the character Penny, and use of VR for telepresence by Samir are particularly well motivated. But what are the characters Samir and Chi actually going to see in this interaction? Will it make a difference if they don’t experience each other’s presence to the same degree? And, how is Samir’s position going to be referenced relative to Penny’s? There are many technical challenges still to be overcome, and compromises will need to be made. For companies like Microsoft and Google the challenge for them is in convincing developers and consumers that the hardware ecosystem they are providing is sufficiently close to their vision of that mixed reality future today…and crucially all at the right price.

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NXT BLD: Emerging Design Technology for the Built Environment

NXT BLD is a new conference in London specifically aimed at the discussion on emerging technologies and their applications in the fields of architecture, engineering and construction. Organised by AEC Magazine, the first event was held in the British Museum on the 28th of June 2017. Videos of the event presentations have been released and provide some useful insight into the ways in which technologies like VR are being used within industry. I found the following talk by Dan Harper, managing director of CityScape Digital, particularly useful:

In the video Dan discusses the motivation for their use of VR. Focused on architectural visualisation the company often found that the high quality renderings they were producing quickly became outdated due to the fact that render times were not keeping pace with the iterative nature of the design process. They found that the real time rendering capabilities of game engines, in their case Unreal, helped them iterate images more quickly. Encountering similar challenges with the production of 3D models they realised that having clients inspect the 3D model could be used not only for communication but also as a spatial decision making tool. Supported by 3D data, real-time rendering and VR, which provides a one to one scale experience of the space, value can be added and costs saved by placing a group of decision makers within the space they are discussing rather than relying on the personal impressions each would draw from their own subjective imagining  based on 2D plans and architectural renderings.

Innovation of the design process with VR not only makes it less expensive but also makes the product more valuable. With reference to similar uses of VR in the car industry Dan identifies opportunities for ‘personalisation’, ‘build to order’, ‘collaboration’, ‘focus grouping’ experientially, ‘efficient construction’ and ‘driving margins at point of sale’. Case studies include the Sky Broadcasting Campus at Osterley, the Battersea Power Station redevelopment and the Earls Court masterplan. These use cases demonstrate that return on investment is increased through reuse of the 3D models and assets in successive stages of the project from concept design, investor briefings, stakeholders consultation right through to marketing.

Videos of the other presentations from the day can be found on the NXT BLD website here.

ViLo: The Virtual London Platform by CASA in VR

This is the third post of the week looking at CASA’s urban data visualisation platform ViLo. Today we are looking at the virtual reality integration with HTC Vive:

Using Virtual Reality technologies such as the HTC Vive we can create data rich virtual environments in which users can freely interact with digital representations of urban spaces. In this demonstration we invite users to enter a virtual representation of the ArcelorMittal Orbit tower, a landmark tower located in the Queen Elizabeth Olympic Park. Using CASA’s Virtual London Platform ViLo it is possible to recursively embed 3D models of the surrounding district within that scene. These models can be digitally coupled to the actual locations they represent through the incorporation of real-time data feeds. In this way events occurring in the actual environment, the arrival and departure of buses and trains for example, are immediately represented within the virtual environment in real-time.

Virtual Reality is a technology which typically uses a head mounted display to immerse the user in a three dimensional, computer generated environment, regularly referred to as a ‘virtual environment’. In this case the virtual environment is a recreation of the viewing gallery at the top of the ArcelorMittal Orbit tower, situated at the Queen Elizabeth Olympic Park in East London. CASA’s ViLo platform is then used to embed further interactive 3D models and data visualisations within that virtual environment.

Using the HTC Vive’s room scale tracking the user can freely walk between exhibits. Otherwise they can teleport between them by pointing and clicking at a spot on the floor with one of the Vive hand controllers. The other hand controller is used for interacting with the exhibits, either by pointing and clicking with the trigger button, or placing the controller over objects and using the grip buttons on the side of the controller to hold them.

In the video we see how the virtual environment can be used to present a range of different media. Visitors can watch 360 degree videos and high quality architectural visualisations, but they can also interact with the 3D models featured in that content more actively using virtual tools like the cross-sectional plane seen in the video.

The ViLo platform provides further flexibility by enabling us to import interactive models of entire urban environments. The Queen Elizabeth Olympic Park is visualised with different layers of data provided by live feeds from Transport for London’s bus, tube, and bike hire APIs. Different layers are selected and removed here by the placing of 3D icons on a panel. Virtual reality affords the user the ability to choose their own view point on the data by simply moving their head. Other contextual information like images from Flickr or articles from Wikipedia can also be imported.

A further feature is the ability to quickly swap between models of different location. In the final section of the video another model of the Queen Elizabeth Olympic Park can be immediately replaced by a model of the area of the Thames in Central London between St Paul’s Cathedral and the Tate Modern gallery. The same tools can be used to manipulate either model. Analysis of building footprint size and building use data are combined with real-time visibility analysis depicting viewsheds from any point the user designates. Wikipedia and Flickr are queried dynamically to provide additional information and context for particular buildings by simply pointing and clicking. In this way many different aspects of urban environments can be digitally reconstructed within the virtual environment, either in miniature or at 1:1 scale.

Where the version of ViLo powered by the ARKit we looked at yesterday provided portability, the virtual reality experience facilitated by the HTC Vive integration can incorporate a much wider variety of data with a far richer level of interaction. Pure data visualisation tasks may not benefit greatly from immersion or presence provided by virtual reality. However, as we see with new creative applications like Google’s Tilt Brush and Blocks, virtual reality really shines in cases where natural and precise interaction is required in the manipulation of virtual objects. Virtual environments also provide useful sites for users who can’t be in the same physical location at the same time. Networked telepresence can be used to enable professionals in different cities to work together synchronously. Alternatively virtual environments can provide forums for public engagement where potential users can drop in at their convenience. Leveraging an urban data visualisation platform like CASA’s ViLo virtual environments can become useful sites for experimentation and communication of built environment interventions.

Many thanks to CASA Research Assistants Lyzette Zeno Cortes and Valerio Signorelli for their work on the ViLo virtual reality integration discussed here. Tweet @ValeSignorelli for more information about the HTC Vive integration.

For further details about ViLo see Monday’s post ViLo: The Virtual London Platform by CASA for Desktop and yesterday’s post ViLo: The Virtual London Platform by CASA with ARKit.

Credits

The Bartlett Centre for Advanced Spatial Analysis (CASA)

Project Supervisor – Professor Andrew Hudson-Smith
Backend Development – Gareth Simons
Design and Visualisation – Lyzette Zeno Cortes
VR, AR and Mixed Reality Interaction – Valerio Signorelli / Kostas Cheliotis / Oliver Dawkins
Additional Coding – Jascha Grübel

Developed in collaboration with The Future Cities Catapult (FCC)

Thanks to the London Legacy Development Corporation and Queen Elizabeth Olympic Park for their cooperation with the project.