The role of junctions in surface completion and contour matching
The role of junctions in surface completion and contour matching
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DOI：
10.1068/p3173
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发表时间：
2001-01-01
期刊：
影响因子：
1.7
通讯作者：
Rubin, N
中科院分区：
文献类型：
--
作者：
Rubin, N
有人建议，轮廓交界处可以作为线索的闭塞。从理论上讲，T形连接和L形连接与遮挡的情况同时发生：它们出现在遮挡表面的边界轮廓与被遮挡表面的边界轮廓相交时。然而，还有其他图像属性可以用作遮挡的线索。在这里，路口的作用是直接比较与其他闭塞线索，具体而言，相关性和表面相似性的出现amodal完成和虚幻的轮廓知觉。刺激已经构建，不同的只是在连接结构，与其他闭塞线索保持不变。从图像中消除L型连接和T型连接，或对其进行处理，以使其与（仍然有效的）全局遮挡解释局部不一致。虽然其他闭塞线索的相关性和表面的相似性仍然存在于图像中，主题报告没有察觉到虚幻的轮廓或amodal完成交界处操纵的图像。接合点操作也影响感知的立体深度和图像区域的运动，这取决于它们是否被感知为与图像中的不相交区域无模式地完成。这些结果被解释在表面完成和轮廓匹配的过程中的交界处的作用。有人提出，路口，是一个局部线索闭塞。用于启动完井流程。其他更全面的遮挡线索，如相关性，在完成过程启动后的后期阶段发挥作用。
It has been suggested that contour junctions may be used as cues for occlusion. Ecologically, T-junctions and L-junctions are concurrent with situations of occlusion: they arise when the bounding contour of the occluding surface intersects with that of the occluded surface. However, there are other image properties that can be used as cues for occlusion. Here the role of junctions is directly compared with other occlusion cues-specifically, relatability and surface-similarity-in the emergence of amodal completion and illusory contour perception. Stimuli have been constructed that differ only in the junction structure, with the other occlusion cues kept unchanged. L-junctions and T-junctions were eliminated from the image or manipulated so as to be locally inconsistent with the (still valid) global occlusion interpretation. Although the other occlusion cues of relatability and surface similarity still existed in the image, subjects reported not perceiving illusory contours or amodal completion in junction-manipulated images. Junction manipulation also affected the perceived stereoscopic depth and motion of image regions, depending on whether they were perceived to amodally complete with a disjoint region in the image. These results are interpreted in terms of the role of junctions in the processes of surface completion and contour matching. It is proposed that junctions, being a local cue for occlusion. are used to launch completion processes. Other, more global occlusion cues, such as relatability, play a part at a later stage, once completion processes have been launched.