PERCEPTION OF SURFACE CONTOURS AND SURFACE SHAPE - FROM COMPUTATION TO PSYCHOPHYSICS
PERCEPTION OF SURFACE CONTOURS AND SURFACE SHAPE - FROM COMPUTATION TO PSYCHOPHYSICS
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DOI：
10.1364/josaa.9.001449
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发表时间：
1992-09-01
影响因子：
1.9
通讯作者：
KNILL, DC
中科院分区：
文献类型：
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作者：
KNILL, DC
从表面标记投射的轮廓为感知表面形状提供了信息。这些信息的性质取决于表面标记的形状相对于其所在表面的形状是如何受到约束的。自然约束是相对于下垫面形状的图形规则性约束。这样的约束可以用标记的测地线曲率来表示，具有零测地线曲率的标记（曲面的测地线）是原型规则图形。我提出了几种测地线约束的形式，并从一个轮廓标记实验中提出了心理物理证据，证明人类视觉系统在处理反射轮廓时隐含地包含了测地线约束。
Contours projected from surface markings provide information for the perception of surface shape. The nature of this information depends on how the shapes of surface marking are constrained relative to the shapes of the surfaces upon which they lie. A natural constraint is that of figural regularity relative to the shape of an underlying surface. Such a constraint would be expressed in terms of the geodesic curvature of a marking, with markings having zero geodesic curvature (geodesics of a surface) being the prototypic regular figures. I propose a number of forms for a geodesic constraint and present psychophysical evidence from a contour-labeling experiment that the human visual system implicitly incorporates a geodesic constraint in the processing of reflectance contours.