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Vis@NERSC
Museum of Old Stuff
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Sample data provided by Peter Reeves of UCSF. This data shows a cell nucleus - the "bright spots" are two chromosomes that have been tagged for easy and rapid identification.
UCSF cell data
Sample data provided by John Bell & Vince Beckner, CCSE, LBNL/NERSC. The following are movie clips generated from a 640x256x256 grid over 265 time steps. The size of the flattened AMR data set is approximately 40GB.
This 265 frame MPEG movie (5669124 bytes) shows the time-varying volume rendering of the density species of a turbulent flow (shock-bubble) simulation.
This 265 frame MPEG movie (7611684 bytes) shows the adaptive AMR grid evolving over time, along with the volume rendering (which is hard to see, as it is visually overpowered by the grid).
Sample data provided by John Bell & Vince Beckner, CCSE, LBNL/NERSC. Data stored on DPSS at LBL, Visapult back end run on CPLANT Alpha/Linux cluster at SNL-CA, viewer run on a Solaris Ultra 60 at LBL.
side view The side, or edge-on view shows how the elevation maps are used to modify what would otherwise be a single flat quadrilateral. The offset maps prove effective in extending the useful range of interactive transformations - before the visual fidelity of the IBR assisted volume rendering begins to degrade. The nominal range of motion is confined to a cone with a 32-degree apex, as claimed by Crawfis et. al. in the original IBRAVR paper.
front view The same data, but viewed from the front.
front view with boxes The same data, but with adaptive, heirarchical grids included.
Sample data (Bubblerun-128) provided by John Bell & Vince Beckner, CCSE, LBNL/NERSC. Data stored on DPSS at LBL, Visapult back end run on CPLANT Alpha/Linux cluster at SNL-CA, viewer run on a Solaris Ultra 60 at LBL. The images below were computed from the density species.
front view of 528-density Timestep 0528 from the Bubblerun-128 dataset. We're looking at density.
front view of 528-density Add in the boxes, and the volume rendering becomes overwhelmed. We've experimented a bit with smooth, antialiased lines, but even that's not much help.