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Outputs (45)

Subtitles in VR 360° video. Results from an eye-tracking experiment (2023)
Journal Article
Brescia-Zapata, M., Krejtz, K., Duchowski, A. T., Hughes, C. J., & Orero, P. (2023). Subtitles in VR 360° video. Results from an eye-tracking experiment. Perspectives, 1-23. https://doi.org/10.1080/0907676x.2023.2268122

Virtual and Augmented Reality, collectively known as eXtended Reality, are key technologies for the next generation of human?computer?human interaction. In this context, 360° videos are becoming ubiquitous and especially suitable for providing immers... Read More about Subtitles in VR 360° video. Results from an eye-tracking experiment.

Eye-tracked Evaluation of Subtitles in Immersive VR 360° Video (2023)
Conference Proceeding
Brescia-Zapata, M., Krejtz, K., Duchowski, A. T., Hughes, C. J., & Orero, P. (2023). Eye-tracked Evaluation of Subtitles in Immersive VR 360° Video. . https://doi.org/10.1109/VRW58643.2023.00227

The paper presents an analysis of visual attention to subtitles within immersive media. We implement a 360∘ video rendering with eye movements recorded in Virtual Reality. Position and color of im-mersive subtitles are compared in terms of perceived... Read More about Eye-tracked Evaluation of Subtitles in Immersive VR 360° Video.

VR 360º subtitles: designing a test suite with eye-tracking technology (2022)
Journal Article
Brescia-Zapata, M., Krejtz, K., Duchowski, A., & Hughes, C. (2022). VR 360º subtitles: designing a test suite with eye-tracking technology. Journal of audiovisual translation, 6(2), 233-258

Subtitle production is an increasingly creative accessibility service. New technologies allow for placing subtitles at any location of the screen in a variety of formats, shapes, typography, font size, and colour. The screen now affords accessible cr... Read More about VR 360º subtitles: designing a test suite with eye-tracking technology.

3D gaze in virtual reality: vergence, calibration, event detection (2022)
Presentation / Conference
Duchowski, A., Krejz, K., Volonte, M., Hughes, C., Brescia-Zapata, M., & Orero, P. (2022, September). 3D gaze in virtual reality: vergence, calibration, event detection. Presented at 26th International Conference on Knowledge-Based and Intelligent Information & Engineering Systems (KES 2022), Verona, Italy

Eye movement analysis in modern 3D rendering systems is reviewed and three new techniques are derived inspired by work developed in early Virtual Reality so-called 2:5D implementations, namely (a) gaze depth (i.e., vergence) estimation, (b) vergence... Read More about 3D gaze in virtual reality: vergence, calibration, event detection.

Universal access : user needs for immersive captioning (2021)
Journal Article
Hughes, C. (2021). Universal access : user needs for immersive captioning. Universal Access in the Information Society, 21(2), 393-403. https://doi.org/10.1007/s10209-021-00828-w

This article focuses on building a prototyping for immersive captioning following a user-centric approach. This methodology is characterised by following a bottom-up approach, where usability and user needs are at the heart of the development. Recent... Read More about Universal access : user needs for immersive captioning.

Accessibility in 360º video players (2020)
Journal Article
Hughes, C., & Montagud, M. (2021). Accessibility in 360º video players. Multimedia Tools and Applications, 80(20), 30993-31020. https://doi.org/10.1007/s11042-020-10088-0

Accessibility is a key requirement for any multimedia tool and application. With the current trend towards immersive experiences, such as Virtual Reality (VR) and 360o video, it becomes key that these environments are adapted to be fully accessible... Read More about Accessibility in 360º video players.

Towards a user specification for immersive audio description (2020)
Book Chapter
Hughes, C., Orero, P., & Rai, S. (2020). Towards a user specification for immersive audio description. In S. Braun, & K. Starr (Eds.), Innovation in Audio Description Research. Routledge. https://doi.org/10.4324/9781003052968-7

This chapter reports on an initial study conducted as part of the EU-funded Immersive Accessibility (ImAc) project, whose broad objective it is to define the requirements for accessibility services such as audio description and audio subtitles within... Read More about Towards a user specification for immersive audio description.

Immersive accessibility 4 all (2019)
Presentation / Conference
Montagud, M., Mas, F., Orero, P., Pesch, P., Bouqueau, R., Hughes, C., & Fernández, S. (2019, September). Immersive accessibility 4 all. Presented at International Broadcast Conference (IBC), RAI, Amsterdam

Disruptive approaches for subtitling in immersive environments (2019)
Presentation / Conference
Hughes, C., Montagud, M., & tho Pesch, P. (2019, June). Disruptive approaches for subtitling in immersive environments. Presented at TVX 2019 - ACM International Conference on Interactive Experiences for Television and Online Video, Media City, Salford UK

The Immersive Accessibility Project (ImAc) explores how accessibility services can be integrated with 360o video as well as new methods for enabling universal access to immersive content. ImAc is focused on inclusivity and addresses the needs of al... Read More about Disruptive approaches for subtitling in immersive environments.

Analyzing data streams using a dynamic compact stream pattern algorithm (2019)
Journal Article
Oyewale, A., Hughes, C., & Saraee, M. (2019). Analyzing data streams using a dynamic compact stream pattern algorithm

A growing number of applications that generate massive streams of data need intelligent data processing and online analysis. Data & Knowledge Engineering (DKE) has been known to stimulate the exchange of ideas and interaction between these two rela... Read More about Analyzing data streams using a dynamic compact stream pattern algorithm.

Analyzing data streams using a dynamic compact stream pattern algorithm (2018)
Presentation / Conference
Oyewale, A., Hughes, C., & Saraee, M. (2018, July). Analyzing data streams using a dynamic compact stream pattern algorithm. Presented at The Eighth International Conference on Advances in Information Mining and Management, Barcelona, Spain

In order to succeed in the global competition, organizations need to understand and monitor the rate of data influx. The acquisition of continuous data has been extremely outstretched as a concern in many fields. Recently, frequent patterns in data s... Read More about Analyzing data streams using a dynamic compact stream pattern algorithm.

Understanding the diverse needs of subtitle users in a rapidly evolving media landscape (2017)
Journal Article
Armstrong, M., Brown, A., Crabb, M., Hughes, C., Jones, R., & Sandford, J. (2017). Understanding the diverse needs of subtitle users in a rapidly evolving media landscape. SMPTE motion imaging journal, 125(9), 33-41. https://doi.org/10.5594/JMI.2016.2614919

Audiences are increasingly using services, such as video on demand and the Web, to watch television programs. Broadcasters need to make subtitles available across all these new platforms. These platforms also create new design opportunities for subti... Read More about Understanding the diverse needs of subtitle users in a rapidly evolving media landscape.

Subtitling method and system (2016)
Patent
Hughes, C., & Armstrong, M. (2016). Subtitling method and system

A method of retrieving supplementary data related to audio-video content with reference to a reference version of that content involves deriving an audio signature from audio-video content. The audio signature is searched against reference audio sign... Read More about Subtitling method and system.

Online news videos : the UX of subtitle position (2015)
Presentation / Conference
Crabb, M., Jones, R., Armstrong, M., & Hughes, C. (2015, October). Online news videos : the UX of subtitle position. Presented at 17th International ACM SIGACCESS Conference on Computers & Accessibility, Lisbon, Portugal

Millions of people rely on subtitles when watching video content. The current change in media viewing behaviour involving computers has resulted in a large proportion of people turning to online sources as opposed to regular television for news infor... Read More about Online news videos : the UX of subtitle position.

Responsive design for personalised subtitles (2015)
Presentation / Conference
Hughes, C., Armstrong, M., Jones, R., & Crabb, M. (2015, May). Responsive design for personalised subtitles. Presented at The 12th Web for All Conference, Florence, Italy

The Internet has continued to evolve, becoming increasingly media rich. It is now a major platform for video content, which is available to a variety of users across a range of devices. Subtitles enhance this experience for many users. However, subti... Read More about Responsive design for personalised subtitles.

Automatic retrieval of closed captions for web clips from broadcast TV content (2015)
Presentation / Conference
Hughes, C., & Armstrong, M. (2015, April). Automatic retrieval of closed captions for web clips from broadcast TV content. Presented at 2015 NAB Broadcast Engineering Conference, Las Vegas, USA

As broadcasters’ web sites become more media rich it would be prohibitively expensive to manually caption all of the videos provided. However, many of these videos have been clipped from broadcast television and would have been captioned at the p... Read More about Automatic retrieval of closed captions for web clips from broadcast TV content.

ImaGiNe Seldinger : first simulator for Seldinger technique and angiography training (2013)
Journal Article
Luboz, V., Zhang, Y., Johnson, S., Song, Y., Kilkenny, C., Hunt, C., …Gould, D. (2013). ImaGiNe Seldinger : first simulator for Seldinger technique and angiography training. Computer Methods and Programs in Biomedicine, 111(2), 419-434. https://doi.org/10.1016/j.cmpb.2013.05.014

In vascular interventional radiology, procedures generally start with the Seldinger technique to access the vasculature, using a needle through which a guidewire is inserted, followed by navigation of catheters within the vessels. Visual and tactile... Read More about ImaGiNe Seldinger : first simulator for Seldinger technique and angiography training.

Storyboarding for visual analytics (2013)
Journal Article
Walker, R., Cenydd, L., Pop, S., Miles, H., Hughes, C., Teahan, W., & Roberts, J. (2015). Storyboarding for visual analytics. Information Visualization, 14(1), 27-50. https://doi.org/10.1177/1473871613487089

Analysts wish to explore different hypotheses, organize their thoughts into visual narratives and present their findings. Some developers have used algorithms to ascertain key events from their data, while others have visualized different states of... Read More about Storyboarding for visual analytics.

A directed particle system for optimised visualization of blood flow in complex networks (2013)
Journal Article
Pop, S., Hughes, C., Ap Cenydd, L., & John, N. (2013). A directed particle system for optimised visualization of blood flow in complex networks. https://doi.org/10.3233/978-1-61499-209-7-330

This paper introduces a novel technique for the visualization of blood (or other fluid) flowing through a complex 3D network of vessels. The Directed Particle System (DPS) approach is loosely based on the computer graphics concept of flocking agents.... Read More about A directed particle system for optimised visualization of blood flow in complex networks.

epSpread - Storyboarding for visual analytics (2011)
Presentation / Conference
Cenydd, L., Walker, R., Pop, S., Miles, H., Hughes, C., Teahan, W., & Roberts, J. (2011, October). epSpread - Storyboarding for visual analytics. Presented at 2011 IEEE Conference on Visual Analytics Science and Technology (VAST), Providence, Rhode Island, USA

We present epSpread, an analysis and storyboarding tool for geolocated microblogging data. Individual time points and ranges are analysed through queries, heatmaps, word clouds and streamgraphs. The underlying narrative is shown on a storyboard-styl... Read More about epSpread - Storyboarding for visual analytics.

Calibrating the Kinect with a 3D projector to create a tangible tabletop interface (2011)
Presentation / Conference
Hughes, C., Sinclair, F., Pagella, T., & Roberts, J. (2011, September). Calibrating the Kinect with a 3D projector to create a tangible tabletop interface. Poster presented at 2011 Joint Virtual Reality Conference (EuroVR-EGVE), Nottingham, UK

In this poster we present a portable and easy to calibrate 3D tabletop display enabling easy understanding of complex datasets and simulations by providing a visualization environment with natural interaction. This table enables users to interact wi... Read More about Calibrating the Kinect with a 3D projector to create a tangible tabletop interface.

A robotic needle interface for interventional radiology training (2011)
Presentation / Conference
Hughes, C., & John, N. (2011, June). A robotic needle interface for interventional radiology training. Presented at The 4th Hamlyn Symposium for Medical Robotics, Imperial College, London, UK

Interventional Radiology (IR) provides a minimally invasive method for accessing vessels and organs as an alternative to traditional open surgery. By manipulating coaxially a catheter and guidewire through the vascular system, a range of pathologies... Read More about A robotic needle interface for interventional radiology training.

Using a Kinect interface to develop an interactive 3D tabletop display (2011)
Presentation / Conference
Cenydd, L., Hughes, C., Roberts, J., & Walker, R. (2011, April). Using a Kinect interface to develop an interactive 3D tabletop display. Poster presented at Eurographics 2011-Posters, Llandudno, Wales

Since the release of the motion picture ’Minority Report’ in 2002, which depicts Tom Cruise interacting with a video display using only hand gestures, there has been a significant interest in the development of intelligent display technology, that... Read More about Using a Kinect interface to develop an interactive 3D tabletop display.

A model for flexible tools used in minimally invasive medical virtual environments (2011)
Journal Article
Soler, F., Luzon, M., Pop, S., Hughes, C., John, N., & Torres, J. (2011). A model for flexible tools used in minimally invasive medical virtual environments. https://doi.org/10.3233/978-1-60750-706-2-594

Within the limits of current technology, many applications of a virtual environment will trade-off accuracy for speed. This is not an acceptable compromise in a medical training application where both are essential. Efficient algorithms must therefor... Read More about A model for flexible tools used in minimally invasive medical virtual environments.

The need to touch medical virtual environments? (2010)
Presentation / Conference
Bello, F., Coles, T., Gould, D., Hughes, C., John, N., Vidal, F., & Watt, S. (2010, March). The need to touch medical virtual environments?. Presented at Workshop of Medical Virtual Environments at IEEE VR 2010, Waltham, MA, USA

Haptics technologies are frequently used in virtual environments to allow participants to touch virtual objects. Medical applications are no exception and a wide variety of commercial and bespoke haptics hardware solutions have been employed to a... Read More about The need to touch medical virtual environments?.

Computational requirements of the virtual patient (2009)
Presentation / Conference
John, N., Hughes, C., Pop, S., Vidal, F., & Buckley, O. (2009, June). Computational requirements of the virtual patient. Presented at 1st International Conference on Mathematical and Computational Biomedical Engineering, Swansea, UK

Medical visualization in a hospital can be used to aid training, diagnosis, and pre- and intra-operative planning. In such an application, a virtual representation of a patient is needed that is interactive, can be viewed in three dimensions (3D), an... Read More about Computational requirements of the virtual patient.

Particle methods for a virtual patient (2009)
Presentation / Conference
Buckley, O., Hughes, C., John, N., & Pop, S. (2009, June). Particle methods for a virtual patient. Presented at 1st International Conference on Mathematical and Computational Biomedical Engineering, Swansea, UK

The particle systems approach is a well known technique in computer graphics for modelling fuzzy objects such as fire and clouds. The algorithm has also been applied to different biomedical applications and this paper presents two such methods: a cha... Read More about Particle methods for a virtual patient.

Real-time Seldinger technique simulation in complex vascular models (2009)
Journal Article
Luboz, V., Hughes, C., Gould, D., John, N., & Bello, F. (2009). Real-time Seldinger technique simulation in complex vascular models. International Journal of Computer Assisted Radiology and Surgery, 4(2009), 589-596. https://doi.org/10.1007/s11548-009-0376-0

Purpose: Commercial interventional radiology vascular simulators emulate instrument navigation and device deployment, though none supports the Seldinger technique, which provides initial access to the vascular tree. This paper presents a novel virtua... Read More about Real-time Seldinger technique simulation in complex vascular models.

Interventional radiology core skills simulation : mid term status of the CRaIVE projects (2008)
Presentation / Conference
Gould, D., Vidal, F., Hughes, C., Villard, P., Luboz, V., John, N., …Kessel, D. (2008, September). Interventional radiology core skills simulation : mid term status of the CRaIVE projects. Poster presented at CIRSE 2008, Copenhagen, Denmark

There is a shortage of radiologists trained in performance of Interventional radiology (IR) procedures. Visceral and vascular IR techniques almost universally commence with a needle puncture, usually to a specific target for biopsy, or to introduce w... Read More about Interventional radiology core skills simulation : mid term status of the CRaIVE projects.

Physics-based virtual environment for training core skills in vascular interventional radiological procedures (2008)
Journal Article
John, N., Luboz, V., Bello, F., Hughes, C., Vidal, F., Lim, I., …Gould, D. (2008). Physics-based virtual environment for training core skills in vascular interventional radiological procedures

Recent years have seen a significant increase in the use of Interventional Radiology (IR) as an alternative to open surgery. A large number of IR procedures commence with needle puncture of a vessel to insert guidewires and catheters: these clinical... Read More about Physics-based virtual environment for training core skills in vascular interventional radiological procedures.

Improving the modeling of medical imaging data for simulation (2008)
Presentation / Conference
Villard, P., Littler, P., Gough, V., Vidal, F., Hughes, C., John, N., …Gould, D. (2008, January). Improving the modeling of medical imaging data for simulation. Presented at United Kingdom Radiology Congress (UKRC), Birmingham, UK

PURPOSE-MATERIALS: To use patient imaging as the basis for developing virtual environments (VE). BACKGROUND: Interventional radiology basic skills are still taught in an apprenticeship in patients, though these could be learnt in high fidelity sim... Read More about Improving the modeling of medical imaging data for simulation.

Adaptive infrastructure for visual computing (2007)
Journal Article
Brodlie, K., Brooke, J., Chen, M., Chisnall, D., Hughes, C., John, N., …Wood, J. (2007). Adaptive infrastructure for visual computing. https://doi.org/10.2312/LocalChapterEvents/TPCG/TPCG07/147-156

Recent hardware and software advances have demonstrated that it is now practicable to run large visual computing tasks over heterogeneous hardware with output on multiple types of display devices. As the complexity of the enabling infrastructure in... Read More about Adaptive infrastructure for visual computing.

A framework for adaptive visualization (2006)
Presentation / Conference
Brodlie, K., Brooke, J., Chen, M., Chisnall, D., Hughes, C., John, N., …Wood, J. (2006, October). A framework for adaptive visualization. Presented at IEEE Visualization, Baltimore, MD, USA

Although desktop graphical capabilities continually improve, visualization at interactive frame rates remains a problem for very large datasets or complex rendering algorithms. This is particularly evident in scientific visualization, (e.g., medical... Read More about A framework for adaptive visualization.

A flexible infrastructure for delivering augmented reality enabled transcranial magnetic stimulation (2006)
Journal Article
Hughes, C., & John, N. (2006). A flexible infrastructure for delivering augmented reality enabled transcranial magnetic stimulation

Transcranial Magnetic Stimulation (TMS) is the process in which electrical activity in the brain is influenced by a pulsed magnetic field. Common practice is to align an electromagnetic coil with points of interest identified on the surface of the br... Read More about A flexible infrastructure for delivering augmented reality enabled transcranial magnetic stimulation.

eViz : towards an integrated framework for high performance visualization (2005)
Presentation / Conference
Riding, M., Wood, J., Brodlie, K., Brooke, J., Chen, M., Chisnal, D., …Roard, N. (2005, September). eViz : towards an integrated framework for high performance visualization. Presented at UK e-Science All Hands Meeting 2005, Nottingham, UK

Existing Grid visualization systems typically focus on the distribution onto remote machines of some or all of the processes encompassing the visualization pipeline, with the aim of increasing the maximum data size, achievable frame rates or display... Read More about eViz : towards an integrated framework for high performance visualization.

Visual supercomputing : technologies, applications and challenges (2005)
Journal Article
Brodlie, K., Brooke, J., Chen, M., Chisnal, D., Fewings, A., Hughes, C., …Roard, N. (2005). Visual supercomputing : technologies, applications and challenges. Computer Graphics Forum, 24(2), 217-245. https://doi.org/10.1111/j.1467-8659.2005.00845.x%7C

If we were to have a Grid infrastructure for visualization, what technologies would be needed to build such an infrastructure, what kind of applications would benefit from it, and what challenges are we facing in order to accomplish this goal? In thi... Read More about Visual supercomputing : technologies, applications and challenges.

Voice interaction for accessible immersive video players
Presentation / Conference
Hughes, C., & Paton, J. Voice interaction for accessible immersive video players. Poster presented at HUCAPP 2021 : 5th International Conference on Human Computer Interaction Theory and Applications, Online

Immersive environments present new challenges for all users, especially those with accessibility requirements. Once a user is fully immersed in an experience, they no longer have access to the devices that they would have in the real world such as... Read More about Voice interaction for accessible immersive video players.

A flexible approach to high performance visualization enabled Augmented Reality
Presentation / Conference
Hughes, C., & John, N. A flexible approach to high performance visualization enabled Augmented Reality. Presented at EG UK Theory and Practice of Computer Graphics 2007, University of Wales, Bangor, UK

Commonly registration and tracking within Augmented Reality (AR) applications have been built around computervision techniques that use limited bold markers, which allow for their orientation to be estimated in real-time. Allattempts to implement AR... Read More about A flexible approach to high performance visualization enabled Augmented Reality.

Evaluating subtitle readability in media immersive environments
Presentation / Conference
Orero, P., Brescia-Zapata, M., & Hughes, C. Evaluating subtitle readability in media immersive environments. Presented at DSAI 2020, the 9th International Conference on Software Development and Technologies for Enhancing Accessibility and Fighting Info-exclusion., Online

The advances in VR technology has led to immersive videos rapidly gaining popularity. Accessibility to immersive media should be offered and subtitles are the most popular accessibility service. Research on subtitle readability has led to guidelines... Read More about Evaluating subtitle readability in media immersive environments.

Immersive captioning : developing a framework for evaluating user needs
Presentation / Conference
for evaluating user needs. Presented at IEEE AIVR 2020 : 3rd International Conference on Artificial Intelligence & Virtual Reality 2020, Online

This article focuses on captioning for immersive environments and the research aims to identify how to display them for an optimal viewing experience. This work began four years ago with some partial findings. This second stage of research, built... Read More about Immersive captioning : developing a framework for evaluating user needs.

Applying NLP to build a cold reading chatbot
Presentation / Conference
Tracey, P., Saraee, M., & Hughes, C. Applying NLP to build a cold reading chatbot. Presented at ISEEIE 2021: 2021 International Symposium on Electrical, Electronics and Information Engineering, Seoul, Republic of Korea

Chatbots are computer programs designed to simulate conversation by interacting with a human user. In this paper we present a chatbot framework designed specifically to aid prolonged grief disorder (PGD) sufferers by replicating the techniques perfor... Read More about Applying NLP to build a cold reading chatbot.

A generic approach to high performance visualization enabled augmented reality
Presentation / Conference
Hughes, C., John, N., & Riding, M. A generic approach to high performance visualization enabled augmented reality. Presented at Proceedings of the UK e-Science All Hands Meeting 2006, Nottingham, UK

Traditionally registration and tracking within Augmented Reality (AR) applications have been built around limited bold markers, which allow for their orientation to be estimated in real-time. All attempts to implement AR without specific markers ha... Read More about A generic approach to high performance visualization enabled augmented reality.

3D measuring tool for estimating femoroacetabular impingement.
Journal Article
Hughes, C., & John, N. 3D measuring tool for estimating femoroacetabular impingement. https://doi.org/10.3233/978-1-61499-209-7-202

Osteoarthritis of the hip is commonly caused by the repetitive contact between abnormal skeletal prominences between the anterosuperior femoral head-neck junction and the rim of the acetabular socket. Current methods for estimating femoroacetabular i... Read More about 3D measuring tool for estimating femoroacetabular impingement..