CONTOUR INTEGRATION BY THE HUMAN VISUAL-SYSTEM - EVIDENCE FOR A LOCAL ASSOCIATION FIELD
CONTOUR INTEGRATION BY THE HUMAN VISUAL-SYSTEM - EVIDENCE FOR A LOCAL ASSOCIATION FIELD
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DOI：
10.1016/0042-6989(93)90156-q
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发表时间：
1993-01-01
期刊：
影响因子：
1.8
通讯作者：
HESS, RF
中科院分区：
文献类型：
--
作者：
FIELD, DJ;HAYES, A;HESS, RF
“良好连续性”的完形法则已被用来描述各种现象，证明连续性在人类感知中的重要性。在这项研究中，我们考虑如何连续性可能是由一个视觉系统，过滤空间数据使用阵列的细胞选择方向和空间频率。许多结构（例如分形轮廓）显示出一种冗余形式，当它们在空间和频率上变化时，这种冗余形式可以通过特征的连续性来很好地表示。我们建议，它是可能的，以利用连续的冗余，但不对齐的功能相关联的过滤器的输出与类似的调整。进行了五个实验，以确定管理的连续性感知的规则。观察者被呈现有方向的带通元件（伽柏贴片）的阵列，其中元件的子集沿“锯齿状”路径沿着排列。使用强迫选择程序，观察者被发现能够识别随机方向元件的场内的路径，即使元件之间的间距比任何单个元件的尺寸大得多。此外，当元件以相对于彼此高达+/-60度的角度定向时，路径被可靠地识别。发现元素沿路径的沿着对准在检测路径的能力中起很大作用。（即“侧到侧”而不是“端到端”）显著降低了观察者的能力，以检测路径的存在。结果进行了讨论，在一个“关联场”，它集成了跨相邻的滤波器被调谐到相似的方向。我们认为，在纹理偏析所涉及的一些过程可能有类似的解释。
The Gestalt law of ''good continuation'' has been used to describe a variety of phenomena demonstrating the importance of continuity in human perception. In this study, we consider how continuity may be represented by a visual system that filters spatial data using arrays of cells selective for orientation and spatial frequency. Many structures (e.g. fractal contours) show a form of redundancy which is well represented by the continuity of features as they vary across space and frequency. We suggest that it is possible to take advantage of the redundancy in continuous, but non-aligned features by associating the outputs of filters with similar tuning. Five experiments were performed, to determine the rules that govern the perception of continuity. Observers were presented with arrays of oriented, band-pass elements (Gabor patches) in which a subset of the elements was aligned along a ''jagged'' path. Using a forced-choice procedure, observers were found to be capable of identifying the path within a field of randomly-oriented elements even when the spacing between the elements was considerably larger than the size of any of the individual elements. Furthermore, when the elements were oriented at angles up to +/-60 deg relative to one another, the path was reliably identified. Alignment of the elements along the path was found to play a large role in the ability to detect the path. Small variations in the alignment or aligning the elements orthogonally (i.e. ''side-to-side'' as opposed to ''end-to-end'') significantly reduced the observer's ability to detect the presence of a path. The results are discussed in terms of an ''association field'' which integrates information across neighboring filters tuned to similar orientations. We suggest that some of the processes involved in texture segregation may have a similar explanation.