Compression-based integral curve data reuse framework for flow visualization
- Peking Univ., Beijing (China). Key Lab. of Machine Perception (Ministry of Education), and School of EECS
- Tianjin Univ., Tianjin (China). School of Software
- Argonne National Lab. (ANL), Argonne, IL (United States). Mathematics and Computer Science Division
- Kyushu Univ. (Japan). Research Inst. for Information Technology; RIKEN, Kobe (Japan). Advanced Inst. for Computational Science
Currently, by default, integral curves are repeatedly re-computed in different flow visualization applications, such as FTLE field computation, source-destination queries, etc., leading to unnecessary resource cost. We present a compression-based data reuse framework for integral curves, to greatly reduce their retrieval cost, especially in a resource-limited environment. In our design, a hierarchical and hybrid compression scheme is proposed to balance three objectives, including high compression ratio, controllable error, and low decompression cost. Specifically, we use and combine digitized curve sparse representation, floating-point data compression, and octree space partitioning to adaptively achieve the objectives. Results have shown that our data reuse framework could acquire tens of times acceleration in the resource-limited environment compared to on-the-fly particle tracing, and keep controllable information loss. Moreover, our method could provide fast integral curve retrieval for more complex data, such as unstructured mesh data.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences (CAS); USDOE
- Grant/Contract Number:
- AC02-06CH11357; XDA05040205
- OSTI ID:
- 1421954
- Journal Information:
- Journal of Visualization, Vol. 20, Issue 4; ISSN 1343-8875
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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