Schumer R A, Julesz B
Vision Res. 1984;24(6):533-42. doi: 10.1016/0042-6989(84)90107-x.
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.
安装在深度基座上的波纹视差光栅用随机点立体图来描绘，以便在离注视点不同偏移量处测量独眼视差调制传递函数。我们发现，随着基座大小的变化，灵敏度和形状都发生了改变。作为波纹频率函数绘制的阈值视差调制幅度曲线，随着基座尺寸的增加而变窄并向低频方向移动。对交叉和不交叉基座的灵敏度之间存在稳定的不对称性；假设每个观察者有大约5分视角的恒定注视视差，这些不对称性就可以得到解释。
