Even though we had to wait a very long time to get our hands on the newest VR technology, it didn't let us down when it arrived! Putting on the helmet is like stepping into the world. The vision and sensory systems work together in great harmony letting you naturally move around in the world. Let us know, at jesper.borlum {at} alexandra(.)dk, if you want a demo and talk about custom virtual reality applications
The picture shows Brian testing out the equipment.
Archive for category Medical Applications
This video demonstrates our real-time molecular visualization application written using OpenGL and GLSL. The video features three distinct visualizations: Stick-and-ball, Connolly surface and density plot. The application renders the molecule using image-based lighting combined with depth-of-field. Ambient occlusion and fog is further used to enhance the perception of depth. The Connolly surface can be dynamically recreated when changing the orbital or probe radius. When recreating the Connolly surface the ambient occlusion is dynamically updated. The density plot, which features five separate density fields, is composited onto the rasterized geometry using raymarching.
The application is part of a presentation which will be given at Symposium on Scientific Visualization held on September 25th - 26th, 2012 at The Royal Danish Academy of Sciences and Letters in Copenhagen.
As part of an ongoing research project we decided to see how far we could push real-time volume rendering using only GLSL shaders. The video shown here demonstrates some of the supported features such as:
- Multiple iso-surface shading
- Density plotting
- Arbitrary oriented contour planes
- Arbitrary oriented cutting plane
The shown video is running on an explicit dataset 256^3 4x16bit floating data on a Nvidia GTX470 graphics card.
Hi everybody,
Recently we have spent some more time on real-time physics simulation.
One of the things we have been working on can be seen in this video of a real-time volumetric simulation of an elastic torus knot.
The simulation was realized using the 'oriented particles' approach to shape matching developed by Matthias Müller and Nuttapong Chentanez.
The implementation will be used in the next version of the Visible Ear Simulator ( ves.cg.alexandra.dk ).
We are proud to present a new release of our freeware surgical drilling simulator. That uses advanced volume ray casting and haptic force feedback to simulate a realistic drilling procedure in the temporal bone. This version has a complete drilling tutorial that guides the user through a whole masteodectomi.
Screenshot from VES showing the tutorial.
Notice the light green coloured bone structures, this indicates where the surgeon should drill. And the dark green coloured is used to display the bone that should have been drilled away in the previous steps.
More info can be found here http://ves.cg.alexandra.dk/
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.
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/
Cardiac Surgery Simulation - Illustrative Heart
The real-time simulation of congenital heart surgery has been a research project since 2003. We have successfully designed and implemented a very detailed cardiac surgical simulation through the utilization of the GPU for general purpose calculations, e.g. soft tissue deformation, displacement mapping and haptic feedback. We have written a number of papers on these subject (see http://www.jespermosegaard.dk/Publications).
Cardiac Surgical Simulation - Open Thorax
The research project was a collaboration between computer scientists and surgeons from Aarhus, London and Tübingen.
