Perceptual evaluation of footskate cleanup

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Date
2011
Authors
Pra ák, Martin
Hoyet, Ludovic
O'Sullivan, Carol
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
When animating virtual humans for real-time applications such as games and virtual reality, animation systems often have to edit motions in order to be responsive. In many cases, contacts between the feet and the ground are not (or cannot be) properly enforced, resulting in a disturbing artifact know as footsliding or footskate. In this paper, we explore the perceptibility of this error and show that participants can perceive even very low levelsof footsliding (<21mm in most conditions). We then explore the visual fidelity of animations where footskate has been cleaned up using two different methods. We found that corrected animations were always preferred to those with footsliding, irrespective of the extent of the correction required. We also determined that a simple approach of lengthening limbs was preferred to a more complex approach using IK fixes and trajectory smoothing.
Description

        
@inproceedings{
:10.2312/SCA/SCA11/287-294
,
booktitle = {
Eurographics/ ACM SIGGRAPH Symposium on Computer Animation
},
editor = {
A. Bargteil and M. van de Panne
},
title = {{
Perceptual evaluation of footskate cleanup
}},
author = {
Pra ák, Martin
 and 
Hoyet, Ludovic
 and 
O'Sullivan, Carol
},
year = {
2011
},
publisher = {
The Eurographics Association
},
ISSN = {
1727-5288
},
ISBN = {
978-1-4503-0923-3
},
DOI = {
/10.2312/SCA/SCA11/287-294
}
}
Citation
URI
https://doi.org/10.2312/SCA/SCA11/287-294
Collections
SCA 11: Eurographics/SIGGRAPH Symposium on Computer Animation