Teaching Documents by John Dingliana
Papers by John Dingliana
Lecture Notes in Computer Science, 2012
Visualization and Data Analysis 2012, 2012
Abstract We present a system for time-critical ray-cast direct volume rendering which can be easi... more Abstract We present a system for time-critical ray-cast direct volume rendering which can be easily integrated into existing acceleration techniques. Our system modifies the global sampling rate of the scene based on knowledge of past frame rates and quickly and ...
ACM SIGGRAPH 2006 Sketches on - SIGGRAPH '06, 2006
Current scalable high-performance graphics systems are either con-structed using special purpose ... more Current scalable high-performance graphics systems are either con-structed using special purpose graphics acceleration hardware or built as a cluster of commodity components with a software in-frastructure that exploits multiple graphics cards [Humphreys et al. 2002]. Both these ...
Journal of Graphics, GPU, and Game Tools, 2005
Abstract. We present an approach for approximate collision handling which uses probabilistic info... more Abstract. We present an approach for approximate collision handling which uses probabilistic information for improving the calculated collision response between objects in real-time physically based animation. The system uses an interruptible collision detection mechanism, which ...
Computers & Graphics, 2010
We present a system for interactive visualisation of 3D volumetric medical datasets combined with... more We present a system for interactive visualisation of 3D volumetric medical datasets combined with perceptual evaluation of how such visualisations can affect a user's interpretation of scenes and attention. Enhancements to traditional volume renderings are provided through a two-level volume rendering strategy which employs fast GPU-based direct volume rendering (DVR) coupled with an additional layer of perceptual cues derived from various techniques from the non-photorealistic rendering (NPR) literature. The two-level approach allows us to successfully separate the most relevant data from peripheral extraneous detail enabling the user to more effectively understand the visual information. Peripheral details are abstracted but sufficiently retained in order to provide spatial reference. We perform a number of perceptual user experiments which test how this approach affects a user's attention and ability to determine the shape of an object. Results indicate that our approach can provide a significant improvement in user perception of shape in complex visualisations, especially when a user has little or no prior knowledge of the data. Our approach would prove extremely useful in technical, medical or scientific visualisations to improve understanding of detailed volumetric datasets.
Computer Graphics Forum, 2009
In this paper we present LazyBrush, a novel interactive tool for painting hand-made cartoon drawi... more In this paper we present LazyBrush, a novel interactive tool for painting hand-made cartoon drawings and animations. Its key advantage is simplicity and flexibility. As opposed to previous custom tailored approaches [SBv05, QWH06] LazyBrush does not rely on style specific features ...
Computer Graphics Forum, 2009
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Teaching Documents by John Dingliana
Papers by John Dingliana