Browsing Centre for Computer Graphics and Visualisation (CCGV) by Title

Now showing items 112-121 of 121

    • Video enhancement using adaptive spatio-temporal connective filter and piecewise mapping
      Wang, Chao; Sun, Li-Feng; Yang, Bo; Liu, Yi-Ming; Yang, Shi-Qiang; Tsinghua University (SpringerOpen, 2008-05)
      This paper presents a novel video enhancement system based on an adaptive spatio-temporal connective (ASTC) noise filter and an adaptive piecewise mapping function (APMF). For ill-exposed videos or those with much noise, we first introduce a novel local image statistic to identify impulse noise pixels, and then incorporate it into the classical bilateral filter to form ASTC, aiming to reduce the mixture of the most two common types of noises - Gaussian and impulse noises in spatial and temporal directions. After noise removal, we enhance the video contrast with APMF based on the statistical information of frame segmentation results. The experiment results demonstrate that, for diverse low-quality videos corrupted by mixed noise, underexposure, overexposure, or any mixture of the above, the proposed system can automatically produce satisfactory results.

    • The virtual physiological human — a European initiative for in silico human modelling
      Viceconti, Marco; Clapworthy, Gordon J.; Jan, Serge Van Sint (Physiological Society of Japan, 2008-12)
      The Virtual Physiological Human (VPH) is an initiative, strongly supported by the European Commission (EC), that seeks to develop an integrated model of human physiology at multiple scales from the whole body through the organ, tissue, cell and molecular levels to the genomic level. VPH had its beginnings in 2005 with informal discussions amongst like-minded scientists, which led to the STEP project, a Coordination Action funded by the EC that began in early 2006. The STEP project greatly accelerated the progress of the VPH and proved to be a catalyst for wide-ranging discussions within Europe and for outreach activities designed to develop a broad international approach to the huge scientific and technological challenges involved in this area. This paper provides an overview of the VPH and the developments it has engendered in the rapidly expanding worldwide activities associated with the physiome. It then uses one particular project, the Living Human Project, to illustrate the type of advances that are taking place to further the aims of the VPH and similar initiatives worldwide.

    • Visual odometer for pedestrian navigation
      Jirawimut, Rommanee; Prakoonwit, Simant; Cecelja, Franjo; Balachandran, Wamadeva (IE, 2003)

    • Visual odometer for pedestrian navigation
      Jirawimut, Rommanee; Prakoonwit, Simant; Cecelja, Franjo; Balachandran, Wamadeva (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2002)

    • Visualisation of left ventricular dysfunction in the virtual pathological heart
      Lin, X.; McFarlane, Nigel J.B.; Zhao, Youbing; Clapworthy, Gordon J.; Dong, Feng; Redaelli, A. (IEEE, 2012-06-08)

    • Visualization and simulated surgery of the left ventricle in the virtual pathological heart of the Virtual Physiological Human
      McFarlane, Nigel J.B.; Lin, X.; Zhao, Youbing; Clapworthy, Gordon J.; Dong, Feng; Redaelli, A.; Parodi, O.; Testi, Debora (The Royal Society, 2011-03)

    • Wavefront raycasting using larger filter kernels for on-the-fly GPU gradient reconstruction
      Liu, Baoquan; Clapworthy, Gordon J.; Dong, Feng (SpringerLink, 2010)

    • Web services in distributed information systems
      Zhao, Xia; Wang, Tao; Liu, Enjie; Clapworthy, Gordon J. (IGI Global, 2010)

    • Web-based 3D visualisation for biomedical applications
      Wei, Hui; Liu, Enjie; Zhao, Xia; McFarlane, Nigel J.B.; Clapworthy, Gordon J. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2011-07)

    • WebGL-based interactive rendering of whole body anatomy for web-oriented visualisation of avatar-centered digital health data
      Zhao, Youbing; Zhao, X.; Dong, Feng; Clapworthy, Gordon J.; Ersotelos, Nikolaos; Liu, Enjie; University of Bedfordshire (IEEE, 2013-11)
      The visualisation of whole-body anatomy has a variety of applications in health-related analysis and simulation. However, the rendering of complex 3D human anatomy models is generally performed by standalone applications rather than via a web interface, as rendering large 3D models has always been a weak spot of traditional web browsers. Consequently, online access to, and exploration of, the human anatomy in 3D has not been feasible in the past. With the advent of WebGL and HTML5, high performance OpenGL rendering seamlessly integrated with the web interface is now within reach, and this opens the possibility of visualising avatar-centered health data via a web interface. In this paper, a WebGL-based prototype for rendering whole-body anatomy is introduced, and the technical details are presented.