Sparse PDF Volumes for Consistent Multi-Resolution Volume Rendering
MetadataShow full item record
AbstractThis paper presents a new multi-resolution volume representation called sparse pdf volumes, which enables consistent multi-resolution volume rendering based on probability density functions (pdfs) of voxel neighborhoods. These pdfs are defined in the 4D domain jointly comprising the 3D volume and its 1D intensity range. Crucially, the computation of sparse pdf volumes exploits data coherence in 4D, resulting in a sparse representation with surprisingly low storage requirements. At run time, we dynamically apply transfer functions to the pdfs using simple and fast convolutions. Whereas standard low-pass filtering and down-sampling incur visible differences between resolution levels, the use of pdfs facilitates consistent results independent of the resolution level used. We describe the efficient out-of-core computation of large-scale sparse pdf volumes, using a novel iterative simplification procedure of a mixture of 4D Gaussians. Finally, our data structure is optimized to facilitate interactive multi-resolution volume rendering on GPUs.
CitationSparse PDF Volumes for Consistent Multi-Resolution Volume Rendering 2014, 20 (12):2417 IEEE Transactions on Visualization and Computer Graphics
- Full body virtual autopsies using a state-of-the-art volume rendering pipeline.
- Authors: Ljung P, Winskog C, Persson A, Lundström C, Ynnerman A
- Issue date: 2006 Sep-Oct
- Interactive rendering of dynamic geometry.
- Authors: Ponchio F, Hormann K
- Issue date: 2008 Jul-Aug
- CvhSlicer: an interactive cross-sectional anatomy navigation system based on high-resolution Chinese visible human data.
- Authors: Meng Q, Chui YP, Qin J, Kwok WH, Karmakar M, Heng PA
- Issue date: 2011
- Per-pixel opacity modulation for feature enhancement in volume rendering.
- Authors: Marchesin S, Dischler JM, Mongenet C
- Issue date: 2010 Jul-Aug
- Accurate direct illumination using iterative adaptive sampling.
- Authors: Donikian M, Walter B, Bala K, Fernandez S, Greenberg DP
- Issue date: 2006 May-Jun