Deep Precomputed Radiance Transfer for Deformable Objects (2019)
Presentation / Conference Contribution
Li, Y., Wiedemann, P., & Mitchell, K. (2019, May). Deep Precomputed Radiance Transfer for Deformable Objects. Presented at ACM Symposium on Interactive 3D Graphics and Games, Montreal, Quebec, Canada

We propose, DeepPRT, a deep convolutional neural network to compactly encapsulate the radiance transfer of a freely deformable object for rasterization in real-time.
With pre-computation of radiance transfer (PRT) we can store complex light interac... Read More about Deep Precomputed Radiance Transfer for Deformable Objects.

Feature-preserving detailed 3D face reconstruction from a single image (2018)
Presentation / Conference Contribution
Li, Y., Ma, L., Fan, H., & Mitchell, K. (2018, December). Feature-preserving detailed 3D face reconstruction from a single image. Presented at the 15th ACM SIGGRAPH European Conference, London, United Kingdom

Dense 3D face reconstruction plays a fundamental role in visual media production involving digital actors. We improve upon high fidelity reconstruction from a single 2D photo with a reconstruction framework that is robust to large variations in expre... Read More about Feature-preserving detailed 3D face reconstruction from a single image.

Multi-reality games: an experience across the entire reality-virtuality continuum (2018)
Presentation / Conference Contribution
Casas, L., Ciccone, L., Çimen, G., Wiedemann, P., Fauconneau, M., Sumner, R. W., & Mitchell, K. (2018, December). Multi-reality games: an experience across the entire reality-virtuality continuum. Presented at the 16th ACM SIGGRAPH International Conference, Tokyo, Japan

Interactive play can take very different forms, from playing with physical board games to fully digital video games. In recent years, new video game paradigms were introduced to connect real-world objects to virtual game characters. However, even the... Read More about Multi-reality games: an experience across the entire reality-virtuality continuum.

Image Based Proximate Shadow Retargeting (2018)
Presentation / Conference Contribution
Casas, L., Fauconneau, M., Kosek, M., Mclister, K., & Mitchell, K. (2018, September). Image Based Proximate Shadow Retargeting. Presented at Computer Graphics & Visual Computing (CGVC) 2018, Swansea University, United Kingdom

We introduce Shadow Retargeting which maps real shadow appearance to virtual shadows given a corresponding deformation of scene geometry, such that appearance is seamlessly maintained. By performing virtual shadow reconstruction from un-occluded real... Read More about Image Based Proximate Shadow Retargeting.

GPU-accelerated depth codec for real-time, high-quality light field reconstruction (2018)
Journal Article
Koniaris, B., Kosek, M., Sinclair, D., & Mitchell, K. (2018). GPU-accelerated depth codec for real-time, high-quality light field reconstruction. Proceedings of the ACM on Computer Graphics and Interactive Techniques, 1(1), 1-15. https://doi.org/10.1145/3203193

Pre-calculated depth information is essential for efficient light field video rendering, due to the prohibitive cost of depth estimation from color when real-time performance is desired. Standard state-of-the-art video codecs fail to satisfy such per... Read More about GPU-accelerated depth codec for real-time, high-quality light field reconstruction.

From Faces to Outdoor Light Probes (2018)
Journal Article
Calian, D. A., Lalonde, J.-F., Gotardo, P., Simon, T., Matthews, I., & Mitchell, K. (2018). From Faces to Outdoor Light Probes. Computer Graphics Forum, 37(2), 51-61. https://doi.org/10.1111/cgf.13341

Image‐based lighting has allowed the creation of photo‐realistic computer‐generated content. However, it requires the accurate capture of the illumination conditions, a task neither easy nor intuitive, especially to the average digital photography en... Read More about From Faces to Outdoor Light Probes.

Empowerment and embodiment for collaborative mixed reality systems: Empowerment and Embodiment (2018)
Journal Article
Pan, Y., Sinclair, D., & Mitchell, K. (2018). Empowerment and embodiment for collaborative mixed reality systems: Empowerment and Embodiment. Computer Animation and Virtual Worlds, 29(3-4), https://doi.org/10.1002/cav.1838

We present several mixed‐reality‐based remote collaboration settings by using consumer head‐mounted displays. We investigated how two people are able to work together in these settings. We found that the person in the AR system will be regarded as th... Read More about Empowerment and embodiment for collaborative mixed reality systems: Empowerment and Embodiment.

Compressed Animated Light Fields with Real-time View-dependent Reconstruction (2018)
Journal Article
Koniaris, C., Kosek, M., Sinclair, D., & Mitchell, K. (2019). Compressed Animated Light Fields with Real-time View-dependent Reconstruction. IEEE Transactions on Visualization and Computer Graphics, 25(4), 1666-1680. https://doi.org/10.1109/tvcg.2018.2818156

We propose an end-to-end solution for presenting movie quality animated graphics to the user while still allowing the sense of presence afforded by free viewpoint head motion. By transforming offline rendered movie content into a novel immersive repr... Read More about Compressed Animated Light Fields with Real-time View-dependent Reconstruction.

IRIDiuM+: deep media storytelling with non-linear light field video (2017)
Presentation / Conference Contribution
Kosek, M., Koniaris, B., Sinclair, D., Markova, D., Rothnie, F., Smoot, L., & Mitchell, K. (2017, July). IRIDiuM+: deep media storytelling with non-linear light field video. Presented at ACM SIGGRAPH 2017 VR Village on - SIGGRAPH '17, Los Angeles, California

We present immersive storytelling in VR enhanced with non-linear
sequenced sound, touch and light. Our Deep Media (Rose 2012) aim
is to allow for guests to physically enter rendered movies with
novel non-linear storytelling capability. With the ab... Read More about IRIDiuM+: deep media storytelling with non-linear light field video.

Interactive Ray-Traced Area Lighting with Adaptive Polynomial Filtering (2016)
Presentation / Conference Contribution
Iglesias-Guitian, J. A., Moon, B., & Mitchell, K. (2016, December). Interactive Ray-Traced Area Lighting with Adaptive Polynomial Filtering. Presented at CVMP, The 13th European Conference on Visual Media Production, London, UK

Area lighting computation is a key component for synthesizing photo-realistic rendered images, and it simulates plausible soft shadows by considering geometric relationships between area lights and three-dimensional scenes, in some cases even account... Read More about Interactive Ray-Traced Area Lighting with Adaptive Polynomial Filtering.

Poxels: polygonal voxel environment rendering (2014)
Presentation / Conference Contribution
Miller, M., Cumming, A., Chalmers, K., Kenwright, B., & Mitchell, K. (2014, November). Poxels: polygonal voxel environment rendering. Presented at Proceedings of the 20th ACM Symposium on Virtual Reality Software and Technology - VRST '14

We present efficient rendering of opaque, sparse, voxel environments with data amplified in local graphics memory with stream-out from a geomery shader to a cached vertex buffer pool. We show that our Poxel rendering primitive aligns with optimized r... Read More about Poxels: polygonal voxel environment rendering.

Capture and analysis of racing gameplay metrics (2011)
Journal Article
Jimenez, E., Mitchell, K., & Seron, F. (2011). Capture and analysis of racing gameplay metrics. IEEE Software, 28, 46-52. https://doi.org/10.1109/MS.2011.71

This article presents a flexible, extendable system called Tracktivity that can capture gameplay metrics in any type of leaderboard-based video game. This system incorporates novel visualizations, including a dynamic competition balancing (DCB) measu... Read More about Capture and analysis of racing gameplay metrics.

Modular Radiance Transfer (2011)
Presentation / Conference Contribution
Loos, B. J., Antani, L., Mitchell, K., Nowrouzezahrai, D., Jarosz, W., & Sloan, P.-P. (2011, December). Modular Radiance Transfer. Presented at SIGGRAPH Asia Conference

The perspective tunnel: An inside view on smoothly integrating detail and context. (1997)
Presentation / Conference Contribution
Mitchell, K., & Kennedy, J. (1997, April). The perspective tunnel: An inside view on smoothly integrating detail and context. Presented at Proc. of Eurographics Workshop on Visualisation in Scientific Computing

The perspective tunnel, a general kind of information visualisation artefact, embodies a visual form which exploits natural human visual perception. Perspective tunnels map information on to the floor, ceiling and walls of a tunnel, so that both ever... Read More about The perspective tunnel: An inside view on smoothly integrating detail and context..

Using active constructs in user-interfaces to object-oriented databases. (1997)
Presentation / Conference Contribution
Mitchell, K., Kennedy, J., & Barclay, P. J. (1997, August). Using active constructs in user-interfaces to object-oriented databases. Presented at In Procs of the 1st International Database engine

This paper examines the use of active constructs in the definition of user-interfaces to object-oriented databases. A development environment for user-interfaces to databases is presented which features the interactive use of active features of an ob... Read More about Using active constructs in user-interfaces to object-oriented databases..

Describing and characterising visualisations. (1996)
Presentation / Conference Contribution
Kennedy, J. B., Mitchell, K. J., & Barclay, P. J. (1996, May). Describing and characterising visualisations. Presented at 3rd FADIVA Workshop

A generic framework for describing and specifying interfaces to databases has been proposed [1]. Currently this
framework is being used as a model for the development of an environment for the construction of user interfaces to object oriented datab... Read More about Describing and characterising visualisations..

A framework for information visualisation (1996)
Journal Article
Kennedy, J., Mitchell, K., & Barclay, P. J. (1996). A framework for information visualisation. SIGMOD record, 25, 30-34

In this paper we examine the issues involved in developing information visualisation systems and present a framework for their construction. The framework addresses the components which must be considered in providing effective visualisations. The fr... Read More about A framework for information visualisation.

DRIVE: An environment for the organised construction of user interfaces to data. (1996)
Presentation / Conference Contribution
Mitchell, K., Kennedy, J., & Barclay, P. J. (1996, July). DRIVE: An environment for the organised construction of user interfaces to data. Presented at 3rd International Workshop on User Interfaces to Databases - IDS3, 1996

This paper describes a runtime user-interface development
environment (UIDE) for the novel capability of interactively using and specifying user-interfaces to object-oriented databases (IDSs). A framework provides the foundation for IDSs constructed... Read More about DRIVE: An environment for the organised construction of user interfaces to data..

A framework for user-interfaces to databases (1996)
Presentation / Conference Contribution
Mitchell, K., Kennedy, J., & Barclay, P. J. (1996, May). A framework for user-interfaces to databases. Presented at International Workshop on Advanced Visual Interfaces, AVI\'96

A framework for user-interfaces to databases (IDSs) is proposed which draws from existing research on human computer interaction (HCI) and database systems. The framework is described in terms of a classification of the characteristic components of a... Read More about A framework for user-interfaces to databases.

3D information visualisation: Identifying and measuring success (1995)
Presentation / Conference Contribution
Kennedy, J., Mitchell, K., Barclay, P., & Marshall, B. (1995, July). 3D information visualisation: Identifying and measuring success. Presented at 2nd FADIVA Workshop, 1995, University of Glasgow

This paper presents some of our views on information visualisation and interfaces to databases with respect to the theme of the workshop.