Seeing motion behind occluders
Seeing motion behind occluders
复制标题
查看遮挡物后面的运动
作者：
S. Watamaniuk;S. McKee
当一个物体在静止的遮挡物后面消失和再现时，视觉系统保持物体的同一性并不困难。在自然界中，一个运动的物体可能与遮挡物有许多不同的特征（颜色、深度、形状等）。基于这些特征的场景分割被认为发生在视觉处理的早期，并影响物体（包括移动物体）的识别方式15。如果区分一个物体的唯一特征是它的运动方向，会发生什么？随机点显示器的实验表明，一个点移动在一个恒定的轨迹是很容易检测到布朗运动6相同的点。如果轨迹间歇性中断，则检测急剧下降，但如果遮挡物掩盖了轨迹中的中断，则检测得到改善。这些遮挡物被感知为与显示器的其余部分（诸如通过颜色或深度）分割是不够的。相反，至关重要的是，遮挡物不包含与目标轨迹方向相似的运动。我们的结论是，检测的轨迹是由于低级别的运动检测器网络内的信息的集成，并不依赖于分割processes7。
THE visual system has no difficulty maintaining the identity of an object as it disappears and reappears behind stationary occluders. In the natural world, a moving object may differ from occluders by many characteristics (colour, depth, shape and so on). Scene segmentation based on these characteristics is thought to happen early in visual processing, and to influence how objects, including moving objects, are identified15. What happens if the only characteristic distinguishing an object is its direction of motion? Experiments with random dot displays show that one dot moving in a constant trajectory is readily detected among identical dots in brownian motion6. Detection declines sharply if the trajectory is intermittently broken, but improves if occluders obscure the breaks in the trajectory. It is not sufficient that these occluders be perceived as segmented from the rest of the display (such as by colour or depth). Rather, it is critical that the occluders do not contain motion that is similar in direction to that of the target trajectory. We conclude that detection of the trajectory is due to the integration of information within a network of low-level motion detectors and is not dependent on segmentation processes7.
速度辨别中的运动干扰。
DOI：
10.1364/josaa.6.001112
发表时间：
1989
期刊：
Journal of the Optical Society of America. A, Optics and image science
影响因子：
--
作者：
Bowne,SF;McKee,SP;Glaser,DA
通讯作者：
Glaser,DA