The accessibility of spatial channels for stereo and motion

The accessibility of spatial channels for stereo and motion
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立体声和运动空间通道的可访问性

DOI:
10.1016/j.visres.2005.10.029
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发表时间:
2006
期刊:
影响因子:
1.8
通讯作者:
C. Liu
C. Liu
中科院分区:
心理学3区
文献类型:
--
作者:
R. Hess;Yizhong Wang;C. Liu

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使用分形噪声图像,我们测量了 Dmin 与空间通带(空间频率和方向)的依赖性,通过该依赖性,信息在立体的眼睛之间或运动的连续帧之间相关。在不影响噪声刺激的幅度谱的情况下,我们使用理想化滤波器来扰乱预定义通带之外的分量的相位。使用简单的高斯模型(其中性能取决于受限空间区域内的信号/噪声),我们获得了支持这两个可比任务的最窄基础空间频率和方向谱区域的带宽估计。空间带宽随峰值空间频率而变化,但非常宽,接近刺激本身的频谱。基本机制的取向特性是各向同性的。这些结果表明,对于这些任务来说,单个窄带空间通道的独立活动在感知上是不可访问的。
Using fractal noise images, we measured the dependence of Dminon the spatial passband (spatial frequency and orientation) over which information was correlated either between the eyes for stereo or between sequential frames for motion. Without affecting the amplitude spectrum of the noise stimulus we used idealized filters to scramble the phase of components outside a pre-defined passband. Using a simple Gaussian model in which performance depends on the signal/noise within a restricted spatial region, we obtained estimates of the bandwidth of the narrowest underlying spatial frequency and orientation spectral region subserving these two comparable tasks. Spatial bandwidths varied with peak spatial frequency but were very broad approximating the spectrum of the stimulus itself. Orientation properties of the underlying mechanisms were isotropic. These results suggest that the independent activity of individual narrowband spatial channels is not perceptually accessible for these tasks.
DOI: 10.1016/0042-6989(89)90045-x
发表时间: 1989-01-01
期刊: VISION RESEARCH
影响因子: 1.8
作者:
HECKMANN, T;SCHOR, CM
通讯作者: SCHOR, CM
粗略的空间尺度限制了细尺度上双眼融合的范围。
DOI: 10.1364/josaa.8.000229
发表时间: 1991
期刊: Journal of the Optical Society of America. A, Optics and image science
影响因子: --
作者:
Wilson,HR;Blake,R;Halpern,DL
通讯作者: Halpern,DL
DOI: 10.1364/josaa.4.002379
发表时间: 1987-12-01
影响因子: 1.9
作者:
FIELD, DJ
通讯作者: FIELD, DJ