Stereoscopic Vision: Cortical Limitations and a Disparity Scaling Effect
Stereoscopic Vision: Cortical Limitations and a Disparity Scaling Effect
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立体视觉：皮质限制和视差缩放效应
DOI：
10.1126/science.181.4096.276
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发表时间：
1973
期刊：
影响因子：
56.9
通讯作者：
C. Tyler
中科院分区：
文献类型：
--
作者：
C. Tyler
立体视觉的空间限制进行了研究，通过使用垂直线刺激包含正弦视差变化，使不同部分的线出现在不同的深度。具有比每度约3个周期更细的颗粒的刺激不会引起深度知觉，即使正弦曲线的曲率是清晰可见的单眼。在曲率的低空间频率下，立体视敏度受到与单目灵敏度相同程度的限制。Panum融合区的极限视差和深度上限受与刺激尺寸成比例的缩放效应的影响。视差缩放的特征在于立体半图像的部分之间的固定最大角度差。
The spatial limitations of stereoscopic vision were studied by using vertical line stimuli containing sinusoidal disparity variations such that different parts of the line appeared at different depths. Stimuli with a finer grain than about 3 cycles per degree did not elicit depth perception, even though the sinusoidal curvature was clearly visible monocularly. At low spatial frequencies of curvature, stereoacuity was limited to the same extent as the monocular sensitivity. The limiting disparity for Panum's fusional region and the upper depth limit are subject to a scaling effect in proportion to stimulus dimensions. The disparity scaling can be characterized by a fixed maximum angular difference between the parts of the stereoscopic half-images.