Compression of time varying isosurfaces
GI '06 Proceedings of Graphics Interface 2006
Streaming compression of tetrahedral volume meshes
GI '06 Proceedings of Graphics Interface 2006
Streaming Simplification of Tetrahedral Meshes
IEEE Transactions on Visualization and Computer Graphics
Isosurface Extraction and Spatial Filtering using Persistent Octree (POT)
IEEE Transactions on Visualization and Computer Graphics
Fine-grained Visualization Pipelines and Lazy Functional Languages
IEEE Transactions on Visualization and Computer Graphics
Out-of-core and compressed level set methods
ACM Transactions on Graphics (TOG)
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Gridded volumetric data sets representing simulation or tomography output are commonly visualized by displaying a triangulated isosurface for a particular isovalue. When the grid is stored in a standard format, the entire volume must be loaded from disk, even though only a fraction of the grid cells may intersect the isosurface. We propose a compressed on-disk representation for regular volume grids that allows streaming, I/O-efficient, out-of-core isosurface extraction. Unlike previous methods, we provide a guaranteed bound on the ratio between the number of cells loaded and number of cells intersecting the isosurface that applies for any isovalue. As grid cells are decompressed, we immediately extract vertices and triangles of the isosurface. Our output is a coherent streaming mesh, which facilitates subsequent processing, including on-the-fly simplification and compression.