@inproceedings{Stalling:1995:FRI,
optcitations = {},
optorganization = {},
author = {Detlev Stalling and Hans-Christian Hege},
series = CGPACS,
editor = {Robert Cook},
localfile = {papers/Stalling.1995.FRI.pdf},
address = {New York},
optpublisher = {ACM Press/ACM SIGGRAPH},
doi = {http://doi.acm.org/10.1145/218380.218448},
optmonth = aug,
citeseer = {http://citeseer.ist.psu.edu/stalling95fast.html},
booktitle = SIGGRAPH95,
optstatus = {OK},
title = {{F}ast and {R}esolution {I}ndependent {L}ine {I}ntegral
{C}onvolution},
abstract = {Line Integral Convolution (LIC) is a powerful technique for
generating striking images and animations from vector data.
Introduced in 1993, themethod has rapidly foundmany application
areas, ranging from computer arts to scientific visualization.
Based upon locally filtering an input texture along a curved
stream line segment in a vector field, it is able to depict
directional information at high spatial resolutions. We present a
new method for computing LIC images. It employs simple box filter
kernels only and minimizes the total number of stream lines to be
computed. Thereby it reduces computational costs by an order of
magnitude compared to the original algorithm. Our method utilizes
fast, error-controlled numerical integrators. Decoupling the
characteristic lengths in vector field grid, input texture and
output image, it allows computation of filtered images at
arbitrary resolution. This feature is of significance in computer
animation as well as in scientific visualization, where it can be
used to explore vector data by smoothly enlarging structure of
details. We also present methods for improved texture animation,
again employing box filter kernels only. To obtain an optimal
motion effect, spatial decay of correlation between intensities of
distant pixels in the output image has to be controlled. This is
achieved by blending different phase-shifted box filter animations
and by adaptively rescaling the contrast of the output frames.},
pages = {249--256},
year = {1995},
}
|