harrison@cs.ubc.ca
Telephone: 604-644-8611 (cell), 604-822-2218 (lab)
Length of Video: 4:02:15 (including 5 second title)
Audio: Yes
Abstract:
In this paper we examine to what extent the lengths of the links in an
animated articulated-figure can be changed without the viewer being
aware of the change. This is investigated in terms of a framework
that emphasizes the role of attention in visual perception. We conducted
a set of five experiments to establish bounds for the sensitivity to
changes in length as a function of several parameters and the amount of attention available.
We found that while length changes of 3% can be perceived when
the relevant links are given full attention, changes of over 20% can
go unnoticed when attention is not focused in this way. These results provide
general guidelines for algorithms that produce or process character
motion data and also bring to light some of the potential gains that
stand to be achieved with attention-based algorithms.
Paper: PDF (2.4MB)
Video: QuickTime Movie (Animation Codec, 640x480, 30fps, 261.5MB)
Video: Digital Video (NTSC DV Codec, 831.8MB)
Video: MPEG-4 Video (320x240, 30fps, 15.8MB)
This is http://www.cs.ubc.ca/labs/imager/tr/2004/harrison-ea-2004-obscuring/Maintained by Jason Harrison (harrison@cs.ubc.ca)
Last modified: Wed Apr 28 13:43:43 2004.