Volume completion
Volume completion
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DOI：
10.1006/cogp.1999.0715
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发表时间：
1999-08-01
影响因子：
2.6
通讯作者：
Tse, PU
中科院分区：
文献类型：
--
作者：
Tse, PU
视觉系统完成图像片段到更大的区域时，这些片段被视为被遮挡物体的可见部分。Kellman和Shipley（1991）认为，这种“非模态”的完成是基于图像片段的轮廓“相关”的方式。“当轮廓的想象延伸以钝角或直角相交时，轮廓就会相互关联。然而，它在这里表明，轮廓相关性是既不必要，也不足以完成的地方。超越重叠平面的传统例子的演示表明，“可合并”的体积，而不是相关的轮廓，是完成现象的关键要素。体积定义为三维封闭空间。通常，这是指表面加上它所包围的内部。当两个体积的无界可见表面是相关的或者由这些表面包围的内部可以完全合并时，两个体积是可合并的。当两个表面的可见部分可以沿着由它们各自的曲率定义的轨迹沿着延伸到被遮挡的空间中，使得它们合并成公共表面时，这两个表面是可关联的。非模态完井的基于体积的解释将表面完井作为一种特殊情况，并解释了轮廓和基于表面的解释都不能解释的例子，（C）1999年学术出版社。
The visual system completes image fragments into larger regions when those fragments are taken to be the visible portions of an occluded object. Kellman and Shipley (1991) argued that this "amodal" completion is based on the way that the contours of image fragments "relate." Contours relate when their imaginary extensions intersect at an obtuse or right angle. However, it is shown here that contour relatability is neither necessary nor sufficient for completion to take place. Demonstrations that go beyond traditional examples of overlapping flat surfaces reveal that "mergeable" volumes, rather than relatable contours, are the critical elements in completion phenomena. A volume is defined as a 3-D enclosure. Typically, this refers to a surface plus the inside that it encloses. Two volumes are mergeable when their unbounded visible surfaces are relatable or the insides enclosed by those surfaces can completely merge. Two surfaces are relatable when their visible portions can be extended into occluded space along the trajectories defined by their respective curvatures so that they merge into a common surface. A volume-based account of amodal completion subsumes surface completion as a special case and explains examples that neither a contour- nor a surface-based account can explain, (C) 1999 Academic Press.