Definition and detection of binocular disparity.
Definition and detection of binocular disparity.
复制标题
双眼视差的定义和检测。
DOI：
10.1016/s0042-6989(97)00091-6
复制
发表时间：
1997
期刊：
影响因子：
1.8
通讯作者：
Craft,WD
中科院分区：
文献类型：
--
作者：
Lappin,JS;Craft,WD
立体视觉实验测试的定义，双眼不同的空间位置，通过扰动的两个半图像的双目对应。分光平移扰动零阶视网膜位置;扩展扰动一阶水平分离;旋转扰动一阶取向;和各向异性扩展变形一阶二维（2D）结构。每次变换扰动的两个半图像的相对位置超过100 arcsec，但立体视觉阈值保持约10 arcsec。双目视差涉及单目半图像的二阶2D微分结构，指定局部表面形状。立体视锐度比非立体视锐度好得多，表明单眼空间信号是双眼相关的。
Stereoacuity experiments tested definitions of binocularly disparate spatial positions by perturbing the binocular correspondence of the two half-images. Dichoptic translations perturbed zero-order retinal positions; expansions perturbed first-order horizontal separations; rotations perturbed first-order orientations; and anisotropic expansions deformed first-order two-dimensional (2D) structure. Each transformation perturbed relative positions in the two half-images by more than 100 arcsec, but stereoacuity thresholds remained about 10 arcsec. Binocular disparity involves second-order 2D differential structure of the monocular half-images, specifying local surface shape. Stereoacuity is much better than nonstereo acuity, suggesting that monocular spatial signals are binocularly correlated.