A method for the real-time rendering of formless dot field structure-from-motion stimuli.
A method for the real-time rendering of formless dot field structure-from-motion stimuli.
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一种根据运动刺激实时渲染无形状点场结构的方法。
DOI：
10.1167/8.5.8
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发表时间：
2008
影响因子：
1.8
通讯作者：
Sheinberg,DavidL
中科院分区：
文献类型：
--
作者：
Singer,JedediahM;Sheinberg,DavidL
The perception of visual motion relies on different computations and different neural substrates than the perception of static form. It is therefore useful to have psychophysical stimuli that carry mostly or entirely motion information, conveying little or nothing about form in any single frame. Structure-from-motion stimuli can sometimes achieve this dissociation, with some examples in studies of biological motion using point-light walkers. It is, however, generally not trivial to provide motion information without also providing static form information. The problem becomes more computationally difficult when the structures and the motions in question are complex. Here we present a technique by which an animated three-dimensional scene can be rendered in real-time as a pattern of dots. Each dot follows the trajectory of the underlying object in the animation, but each static frame of the animation appears to be a uniform random field of dots. The resulting stimuli capture motion vectors across arbitrary complex scenes, while providing virtually no instantaneous information about the structure of that scene. We also present the results of a psychophysical experiment demonstrating the efficacy and the limitations of the technique. The ability to create such stimuli on the fly allows for interactive adjustment and control of the stimuli, real-time parametric variations of structure and motion, and the creation of large libraries of actions without the need to pre-render a prohibitive number of movies. This technique provides a powerful tool for the dissociation of complex motion from static form.
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变换视运动中 3D 形状分析的持续时间
DOI：
10.3758/bf03195790
发表时间：
2002
期刊：
Perception & Psychophysics
影响因子：
--
作者：
P. Tse;N. Logothetis
通讯作者：
N. Logothetis
运动结构中的非视觉信息
影响因子：
1.8
作者：
W. V. Damme;W. A. Grind
通讯作者：
W. A. Grind
动力学深度效应和形状识别。
DOI：
--
发表时间：
1989
期刊：
Journal of Experimental Psychology: Human Perception and Performance
影响因子：
--
作者：
G. Sperling;M. Landy
通讯作者：
M. Landy
DOI：
10.3758/bf03212378
发表时间：
1973-01-01
期刊：
PERCEPTION & PSYCHOPHYSICS
影响因子：
--
作者：
JOHANSSON, G
通讯作者：
JOHANSSON, G
由于光流变形而感知表面倾斜。
DOI：
10.1037//0096-1523.25.2.426
发表时间：
1999
期刊：
Journal of experimental psychology. Human perception and performance
影响因子：
--
作者：
F. Domini;C. Caudek
通讯作者：
C. Caudek