Bias and sensitivity of stereo judgements in the presence of a slanted reference plane
Bias and sensitivity of stereo judgements in the presence of a slanted reference plane
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DOI：
10.1016/s0042-6989(98)00324-1
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发表时间：
1999-09-01
期刊：
影响因子：
1.8
通讯作者：
McKee, SP
中科院分区：
文献类型：
--
作者：
Glennerster, A;McKee, SP
已知特征的感知深度受到倾斜参考平面的存在的影响。 Mitchison 和 Westheimer ((1984). Vision Research, 24, 1063-1070) 报告说，当两条线位于与参考平面近似平行的平面中时，它们似乎处于相同的深度。我们测量了在规则的点网格前面呈现的两条线的感知深度，这些线要么与正面平行，要么围绕垂直轴倾斜。随着网格与线条的距离进一步移动，倾斜网格对感知深度的影响减弱。我们还发现倾斜的网格会影响对视差差异的敏感度。检测视差变化的最小阈值通常在注视平面中最低，并且随着基座视差的增加而系统地上升。在存在倾斜参考平面的情况下，最小阈值位于或接近相同感知深度的平面，并且随着与该平面的视差的增加而升高。 (C) 1999 Elsevier Science Ltd. 保留所有权利。
The perceived depth of features is known to be affected by the presence of a slanted reference plane. Mitchison and Westheimer ((1984). Vision Research, 24, 1063-1070) reported that two lines appear to be at the same depth when they lie in a plane approximately parallel with the reference plane. We measured the perceived depth of two lines presented in front of a regular grid of dots that was either fronto-parallel or slanted about a vertical axis. The effect of the slanted grid on perceived depth diminished as the grid was moved further in disparity from the lines. We also found that the slanted grid affected the sensitivity to differences in disparity. The minimum threshold for detecting changes in disparity is normally lowest in the fixation plane and rises systematically with increasing pedestal disparity. In the presence of a slanted reference plane, the minimum threshold is at or close to the plane of equal perceived depth and rises with increasing disparity from this plane. (C) 1999 Elsevier Science Ltd. All rights reserved.