Perception of circular heading from optical flow.
Perception of circular heading from optical flow.
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DOI：
10.1037//0096-1523.17.1.28
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发表时间：
1991-02
期刊：
影响因子：
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通讯作者：
W. Warren;D. Mestre;Arshavir W. Blackwell;Michael W. Morris
中科院分区：
文献类型：
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作者：
W. Warren;D. Mestre;Arshavir W. Blackwell;Michael W. Morris
观察员观看随机点光流显示器，模拟在圆形路径上的自我运动，并判断它们是否会通过16米处的目标的右侧或左侧。如果旋转轴的方向是已知的，那么在两个框架中的两个点理论上足以指定圆形航向。航向精度优于1.5度与地面表面，墙壁表面，和3D点云，并在密度恒定到2点，与理论一致。然而，观测者路径的半径与恒定航向误差之间存在反比关系，因此在小半径下，观测者报告航向与实际路径成3度角，与地面成3度角，与墙壁和云层成3度角。这可能是小显示屏的伪影。
Observers viewed random-dot optical flow displays that simulated self-motion on a circular path and judged whether they would pass to the right or left of a target at 16 m. Two dots in two frames are theoretically sufficient to specify circular heading if the orientation of the rotation axis is known. Heading accuracies were better than 1.5 degrees with a ground surface, wall surface, and 3D cloud of dots, and were constant over densities down to 2 dots, consistent with the theory. However, there was an inverse relation between the radius of the observer's path and constant heading error, such that at small radii observers reported heading 3 degrees to the outside of the actual path with the ground and to the inside with the wall and cloud. This may be an artifact of a small display screen.