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  • 2012
  • Issue No. 12 - Dec.
  • Abstract - Interactive Volume Exploration of Petascale Microscopy Data Streams Using a Visualization-Driven Virtual Memory Approach
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Interactive Volume Exploration of Petascale Microscopy Data Streams Using a Visualization-Driven Virtual Memory Approach
Dec. 2012 (vol. 18 no. 12)
pp. 2285-2294
This paper presents the first volume visualization system that scales to petascale volumes imaged as a continuous stream of high-resolution electron microscopy images. Our architecture scales to dense, anisotropic petascale volumes because it: (1) decouples construction of the 3D multi-resolution representation required for visualization from data acquisition, and (2) decouples sample access time during ray-casting from the size of the multi-resolution hierarchy. Our system is designed around a scalable multi-resolution virtual memory architecture that handles missing data naturally, does not pre-compute any 3D multi-resolution representation such as an octree, and can accept a constant stream of 2D image tiles from the microscopes. A novelty of our system design is that it is visualization-driven: we restrict most computations to the visible volume data. Leveraging the virtual memory architecture, missing data are detected during volume ray-casting as cache misses, which are propagated backwards for on-demand out-of-core processing. 3D blocks of volume data are only constructed from 2D microscope image tiles when they have actually been accessed during ray-casting. We extensively evaluate our system design choices with respect to scalability and performance, compare to previous best-of-breed systems, and illustrate the effectiveness of our system for real microscopy data from neuroscience.
Index Terms:
virtual storage,data acquisition,data visualisation,electron microscopes,microscopy,neuroscience,interactive volume exploration,petascale microscopy data streams,visualization-driven virtual memory,volume visualization system,petascale volumes,continuous stream,high resolution electron microscopy image,anisotropic petascale volume,decouples construction,3D multiresolution representation,data acquisition,multiresolution hierarchy,multiresolution virtual memory architecture,octree,microscopes,visible volume data,volume ray casting,cache misses,3D blocks,2D microscope image tiles,ray-casting,system design,best-of-breed system,real microscopy data,Data visualization,Neuroscience,Image resolution,Microscopy,Graphics processing unit,Octrees,Rendering (computer graphics),neuroscience,Petascale volume exploration,high-resolution microscopy,high-throughput imaging
Citation:
M. Hadwiger, J. Beyer, Won-Ki Jeong, H. Pfister, "Interactive Volume Exploration of Petascale Microscopy Data Streams Using a Visualization-Driven Virtual Memory Approach," IEEE Transactions on Visualization and Computer Graphics, vol. 18, no. 12, pp. 2285-2294, Dec. 2012, doi:10.1109/TVCG.2012.240
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