NDLI: Out-of-core isosurface extraction of time-varying fields over irregular grids

Content Provider	IEEE Xplore Digital Library
Author	Yi-Jen Chiang
Copyright Year	2003
Description	Author affiliation: Dept. of Comput. & Inf. Sci., Polytech. Univ., Brooklyn, NY, USA (Yi-Jen Chiang)
Abstract	In this paper, we propose a novel out-of-core isosurface extraction technique for large time-varying fields over irregular grids. We employ our meta-cell technique to explore the spatial coherence of the data, and our time tree algorithm to consider the temporal coherence as well. Our one-time preprocessing phase first partitions the dataset into meta-cells that cluster spatially neighboring cells together and are stored in disk. We then build a time tree to index the meta-cells for fast isosurface extraction. The time tree takes advantage of the temporal coherence among the scalar values at different time steps, and uses BBIO trees as secondary structures, which are stored in disk and support I/O-optimal interval searches. The time tree algorithm employs a novel meta-interval collapsing scheme and the buffer technique, to take care of the temporal coherence in an I/O-efficient way. We further make the time tree cache-oblivious, so that searching on it automatically performs optimal number of block transfers between any two consecutive levels of memory hierarchy (such as between cache and main memory and between main memory and disk) simultaneously. At run-time, we perform optimal cache-oblivious searches in the time tree, together with I/O-optimal searches in the BBIO trees, to read the active meta-cells from disk and generate the queried isosurface efficiently. The experiments demonstrate the effectiveness of our new technique. In particular, compared with the query-optimal main-memory algorithm by Cignoni et al. (1997) (extended for time-varying fields) when there is not enough main memory, our technique can speed up the isosurface queries from more than 18 hours to less than 4 minutes.
Sponsorship	IEEE Comput. Soc. Tech. Comm. on Visualisation and Graphics
Starting Page	217
Ending Page	224
File Size	1537120
Page Count	8
File Format	PDF
ISBN	0780381203
DOI	10.1109/VISUAL.2003.1250375
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-10-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Isosurfaces Data mining Data visualization Computer graphics Grid computing Information science Spatial coherence Clustering algorithms Partitioning algorithms Runtime
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Adaptive extraction of time-varying isosurfaces

Interactive out-of-core isosurface extraction

A unified infrastructure for parallel out-of-core isosurface extraction and volume rendering of unstructured grids

Isosurface Extraction and View-Dependent Filtering from Time-Varying Fields Using Persistent Time-Octree (PTOT)

Isosurface Extraction of Volumetric Data Using Implicit Surface Polygonization

Parallel view-dependent isosurface extraction using multi-pass occlusion culling

Scalable isosurface visualization of massive datasets on COTS clusters

Optimal isosurface extraction from irregular volume data

Efficient parallel out-of-core isosurface extraction

Out-of-core isosurface extraction of time-varying fields over irregular grids

Similar Documents

Adaptive extraction of time-varying isosurfaces

Interactive out-of-core isosurface extraction

A unified infrastructure for parallel out-of-core isosurface extraction and volume rendering of unstructured grids

Isosurface Extraction and View-Dependent Filtering from Time-Varying Fields Using Persistent Time-Octree (PTOT)

Isosurface Extraction of Volumetric Data Using Implicit Surface Polygonization

Parallel view-dependent isosurface extraction using multi-pass occlusion culling

Scalable isosurface visualization of massive datasets on COTS clusters

Optimal isosurface extraction from irregular volume data

Efficient parallel out-of-core isosurface extraction

Out-of-core isosurface extraction of time-varying fields over irregular grids