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Visualisation Hardware

Visual input (stimuli) has great influence on humans, when trying to evaluate, anticipate and maintain balance. Thus, it is very important that the patient will feel fully immersed in a visual input and that the visual input will be correctly presented (Frame rate, high quality rendered images, correct parallax effect generation etc.) In order to achieve the above objectives, adequate hardware, software and programming are needed.

Software

D-Flow, CAREN’s control software, runs under Unix, and can be installed both on SGI (IRIX6.5 and higher) and PC workstations (developing for Linux OS). For its real-time 3D image render, D-Flow uses SGI Performer and OpenGL technology. However, it is also possible to use different commercials 3D packages for environments generation, such as SoftImage 3D and SoftImage XSI, Maya and so on.

Hardware

Real-time Render – For real-time rendering, both SGI and PC workstations can be used, and strong and fast machines are needed:
  • SGI, Octane, dual CPU running Irix 6.5 or higher
  • PC – Dual CPU 2Ghz running Linux 8.0 or higher

Projection System

The second component for visualization is a projection system. There are two methods that can be applied for visualization projection:
  • Standard High Definition Video Projection System – In this case, a big screen is installed in front of the motion platform (5X4 meters).
  • Head Mount Display Device – Any HMD that supports resolutions 1024X768 or higher can be connected to D-Flow.