UltraVis™

The UltraVis system is a free software system for fast and versatile volume rendering.

» Download the UltraVis system
» Status & Bugs

UltraVis is a software system for fast and versatile volume rendering on standard PCs. Volume rendering means the display of a three-dimensional array of data. For an introduction into the field of volume rendering see for example " Introduction to Volume Rendering " by B. Lichtenbelt, R. Crane and S. Naqvi, Hewlett-Packard Professional Books, Prentice Hall, 1998.

UltraVis currently supports seven voxel formats:

• 8-bit scalar value
• 12-bit scalar value
• 8-bit scalar value plus 4-bit material label
• 8-bit scalar value plus precomputed gradients (8 bits per component)
• 7-bit scalar value, precomputed gradients (7 bits per component) plus 4-bit material label
• RGBA-voxels (8 bits per component)
• RGBA-voxels (7 bits per component) plus 4-bit material label

Maximum data set dimensions are 256x256x256.

Additional features:

• Perspective Raycasting
• Tri-linear Interpolation or Nearest-Neighbor Sampling
• Early Ray Termination
• Empty Space Skipping
• Subsampling during Motion, Nearest-Neighbor Sampling during Motion
• On-the-fly Classification via Look-up Tables
• Diffuse and Specular Shading using four Light Sources
• Alpha-Compositing
• Support for up to 16 different Materials in a Data Set
• Multiple Sessions
• Volume Animation
• Support for Stereo Viewing (some restrictions apply)
• Network Operation for Parallel Rendering

UltraVis is available for free download. It currently runs under the Microsoft® Windows NT® 4.0 operating system. It requires at least one Pentium®-III CPU or later.