@techreport{Collomosse:2003:SSS,
www =
{http://www.bath.ac.uk/comp-sci/publications/technicalseries/report/2003-01.shtml},
number = {CSBU 2003--01},
month = jun,
optissn = {1740-9497},
optaddress = {Bath, UK},
author = {John P. Collomosse and David Rowntree and Peter M. Hall},
url = {http://www.cs.bath.ac.uk/~jpc/research.htm#strokesurface},
title = {{S}troke {S}urfaces: {A} {S}patio-temporal {F}ramework for
{T}emporally {C}oherent {N}on-photorealistic {A}nimations},
abstract = {We present a novel framework for the automated synthesis of
non-photorealistic animations from video sequences. Our approach
is unique in that we interpret the source video sequence as a
spatio-temporal voxel volume, with time as the third dimension.
Video frames are segmented into homogeneous regions, and heuristic
associations between regions formed over time to produce a
collection of conceptually high level spatio-temporal objects.
These objects carve sub-volumes through the video volume delimited
by continuous isosurface ``Stroke Surface'' patches. By
manipulating objects in this representation we are able to
synthesise a wide gamut of artistic effects, which we allow the
user to stylise and influence through a parameterised ``Video
Paintbox''. In addition to novel temporal effects unique to our
method we demonstrate the extension of `traditional' static NPR
styles to video including painterly, sketchy and 'toon shading
effects. An application to advanced rotoscoping is also
identified. The high level of analysis afforded by our
spatio-temporal approach allows us to maintain a high degree of
temporal coherence; a property scarce in current NPR video
techniques which process video at a low level (on a per pixel, per
frame sequential basis). The paper concludes with a critical
appraisal and discussion of future applications for the Stroke
Surface representation, including potential for video
compression.},
localfile = {papers/Collomosse.2003.SSS.pdf},
institution = {Department of Computer Science, University of Bath, U.K.},
year = {2003},
}
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