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NRRD for Volume Visualization

Nearly Raw Raster Data (NRRD a.k.a. 'Nerd') is a data format and toolset for representing volume data.

The NRRD website includes extensive details, examples, conversion utilities, resources, and references.

NRRD and the corresponding teem software library facilitates the pre-processing tasks (cropping, quantizing, resampling) of volume data. It also helps with the basic analysis tasks which help to understand the structure of a dataset (histograms, maximum intensity projections, connected components).

In addition to the teem library and codebase, several important tools support the processing and use of NRRD volume data format as well as DICOM:

The X3D Volume Rendering component defines how to describe the presentation of volumetric data in interactive 3D scenes. These capabilities were approved in X3D version 3.3. Support for the NRRD format is optional for X3D players. For more details on processing pipelines, see the Web3D 2013 Tutorial!

The X3D Basic Examples - Volume Visualization provides example X3D scenes utilizing NRRD. These scenes have been prepared by Virginia Tech (VT) Visionarium research group and published under an open-source license.

Possibilities for Future Work