Binocular disparity modulation sensitivity to disparities offset from the plane of fixation
Binocular disparity modulation sensitivity to disparities offset from the plane of fixation
复制标题
双目视差调制对固定平面视差偏移的敏感性
DOI：
10.1016/0042-6989(84)90107-x
复制
发表时间：
1984
期刊：
影响因子：
1.8
通讯作者：
B. Julesz
中科院分区：
文献类型：
--
作者：
R. Schumer;B. Julesz
安装在深度基座上的波纹视差光栅被描绘成随机点立体图，以测量不同偏移量下的圆形视差调制传递函数。我们发现，随着底座大小的不同，敏感度和形状都会发生变化。阈值视差调制幅度曲线，作为波纹频率的函数，随着基座尺寸的增加而变窄并向更低的频率移动。交叉和非交叉支架的敏感度之间有稳定的不对称性：这可以通过假设每个观察者具有大约5‘弧度的恒定注视视差来解释。
Corrugated disparity gratings mounted on depth pedestals were portrayed with random-dot stereograms in order to measure the cyclopean disparity modulation transfer function at various offsets from fixation. We found changes in both sensitivity as well as shape as the magnitude of the pedestal varied. Threshold disparity modulation amplitude curves, plotted as a function of corrugation frequency, became narrower and shifted toward lower frequencies as pedestal size increased. There were stable asymmetries between sensitivities to crossed and uncrossed pedestals: these could be accounted for by assuming each observer to have a constant fixation disparity on the order of 5′ of arc.