Eric Penner

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Volumetric data sets are often examined by displaying isosurfaces, surfaces where the data or function takes on a given value. We propose a new method for rendering isosurfaces at interactive rates while supporting dynamic ambient occlusion and/or soft shadows and requiring minimal pre-computation time. By approximating the occlusion in a region as the(More)
Most virtual reality systems offer the option of viewing the space using a head mounted display or a head coupled display. These can provide a comfortable way of providing a 3D display while detecting head motion and using that to change the viewing position and angle. However, head mounted displays typically have limited resolution, can create neck and eye(More)
An interactive multi-display cluster-style rendering system is presented which runs on a single PC rather than a cluster of PCs. Many Direct3D features, including support for a programmable pipeline, are supported via a drop-in library replacement for Direct3D. While the presented profiling results are bandwidth limited, PCI cards have been used. It is(More)
Extracellular stimuli are often encoded in the frequency, amplitude and duration of spikes in the intracellular concentration of calcium ([Ca2+]i). However, the timing of individual [Ca2+]i-spikes in relation to the dynamics of an extracellular stimulus is still an open question. To address this question, we use a systems biology approach combining(More)
classroom use is granted without fee provided that copies are not made or distributed for commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author. SIGGRAPH 2014, August 10 – 14, 2014, Vancouver, British(More)
Fig. 1. Progress of rendering virtual views of di€icult scenes containing foliage, wide baseline occlusions and reflections. View ray and texture mapping ray visibility is modelled soly according to a distribution of depth probabilities retained from the reconstruction stage. This results in so edges, so occlusion removal, partial uncertainty of depth in(More)
In this paper, we show a simulator-based implementation of the Generalized Likelihood Ratio method to detect leaks and locate biases in pipelines. We compare its leak detection ability, costs, and levels of tuning required to those of other software and hardware leak detection methods. The economic comparison includes computing the losses for not detecting(More)
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