AUFLIC: An Accelerated Algorithm For Unsteady Flow Line Integral Convolution

Liu, ZhanPing; II, Robert James Moorhead

AUFLIC: An Accelerated Algorithm For Unsteady Flow Line Integral Convolution

Files

043-052.pdf (1.76 MB)

Date

2002

Authors

Liu, ZhanPing
II, Robert James Moorhead

Publisher

The Eurographics Association

Abstract

UFLIC (Unsteady Flow Line Integral Convolution) is an effective texture synthesis technique to visualize unsteady flow with enhanced temporal coherence, but it is time-consuming to generate. This paper presents an accelerated algorithm, called AUFLIC (Accelerated UFLIC), to speed up the UFLIC generation. Our algorithm saves, re-uses, and updates pathlines in the value scattering processes. A flexible seeding strategy is introduced so that a seed particle may be directly extracted from the previous scattering processes to make best use of the saved pathline so as to reduce computationally expensive pathline integration calculations. A dynamic activation-deactivation scheme is employed to maintain the fewest necessary pathlines. Avoiding excessive pathlines achieves acceleration and nearly-constant memory consumption. With very low memory cost, AUFLIC cuts UFLIC generation time nearly in half without any image quality degradation.

        @inproceedings{:10.2312/VisSym/VisSym02/043-052
,
booktitle = {Eurographics / IEEE VGTC Symposium on Visualization
},
editor = {D. Ebert and P. Brunet and I. Navazo
},
title = {{AUFLIC: An Accelerated Algorithm For Unsteady Flow Line Integral Convolution
}},
author = {Liu, ZhanPing and 
II, Robert James Moorhead
},
year = {2002
},
publisher = {The Eurographics Association
},
ISSN = {1727-5296
},
ISBN = {1-58113-536-X
},
DOI = {/10.2312/VisSym/VisSym02/043-052
}
}