Archive for May, 2009

Smoke rendering software

Screenshot from the demo

Screenshot from the demo

Here is a tech demo of our Cuda smoke visualizer software. The software demonstrates real-time interaction and visualization with a smoke data set. It is possible to adjust several parameters such as density and lighting position. To download press HERE.

Screenshot of a more complex model.

Additional screenshot from the demo


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Fun with Photonmapping

Photon mapping

Photon mapping

Our first attempt to use photonmapping in our Cuda raytracer, 300 samples pr pixel, 1200x800, final image rendering time 65 secs.

indirectlight

Here is the famous sponza scene in a 400 pixel pr sample rendering, without and with photonmapping. At this moment this takes a few minutes

to render, but we hope to improve on the rendering time when we learn a little more about CUDA.

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Youtube videos; Cardiac Surgery Simulator

YouTube Preview Image YouTube Preview Image

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Ray marching smoke

cool_smoke

Nice real-time smoke visualization, rendered by our CUDA tracer including a clear sky model. The smoke dataset was delivered by Michael Bang and Brian Bunch Christensen from the Department of Computer Science, University of Aarhus.

YouTube Preview Image

Short video preview of our technique.

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Onco visible man presentation.

onco_man

Today we presented the Onco visible man for the first time, at a workshop at  Aarhus University hospital. The prototype features a real time stereo visualization of the "visible human" dataset. And the user is able to navigate, select and remove all the different segments of anatomy.

YouTube Preview Image

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Raytracing on the GPU

We have recently begun initial experiments and implementation of a GPU assisted raytracer (through CUDA). Our vision is a progressive global illumination renderer with real time updates.

CUDA raytracer - pathtracing, lambertian only

CUDA raytracer - pathtracing, lambertian only

CUDA raytracer - refraction and reflection test

CUDA raytracer - refraction and reflection test

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New employee: Karsten Noe

We are happy to announce that Karsten Noe has signed the letter of appointement, and will thus join the computer graphics group at the Alexandra Institute from the 1st of august 2009. Karsten was previously a PhD student (expecting a PhD degree soon) from the Department of Computer Science, University of Aarhus, working on GPU accelerated registration of deformable tissue in radiation therapy.

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Visible Ear Simulator website

Visible Ear Simulator - drilling

Visible Ear Simulator - drilling

The Visible Ear Simulator website is available. Download of the free-ware version will be available soon: http://www.alexandra.dk/ves/

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