Tanrıkulu Ömer Dağlar, Froyen Vicky, Feldman Jacob, Singh Manish
Department of Psychology, Center for Cognitive Science, Rutgers University, Piscataway, NJ, USA.
Perception. 2018 Jul;47(7):694-721. doi: 10.1177/0301006618776119. Epub 2018 May 28.
Standard accounts of accretion/deletion of texture treat it as a definite cue to depth ordering: The accreting/deleting surface is interpreted as being behind the adjoining surface. Froyen, Feldman, and Singh showed that accretion/deletion can also, under certain circumstances, be perceived as a 3D column rotating in front, with the accretion/deletion explained by self-occlusion. These displays differ from traditional accretion/deletion displays in a number of factors, including the presence of figure/ground cues, accretion/deletion on both sides of boundaries, and in the number of distinct regions. In a series of experiments, we systematically manipulated each of these factors in order to determine what factors are actually instrumental in creating the rotating column (accretion/deletion in front) interpretation. In Experiment 1, the width of each region was kept fixed while manipulating the number of regions, and in Experiment 2, the width of the overall display was kept fixed. Observers indicated which set of regions they perceived to be in front. In both experiments, accreting/deleting regions were most likely to be seen in front when geometric figural cues favored a figural interpretation and when textural motion was introduced in all regions (rather than on just one side of each boundary). The number of regions had a relatively small effect (although this effect was larger in Experiment 2). These findings indicate that the geometry of the occluding contour is a critical factor in the interpretation of accretion/deleting, and future models of 3D interpretation involving accretion/deletion must include contour geometry as a key component.
关于纹理的增减，标准解释将其视为深度排序的明确线索：正在增减的表面被解释为在相邻表面之后。弗罗延、费尔德曼和辛格表明，在某些情况下，增减也可以被感知为一个在前方旋转的三维柱体，增减现象由自遮挡来解释。这些显示在许多因素上与传统的增减显示不同，包括图形/背景线索的存在、边界两侧的增减情况以及不同区域的数量。在一系列实验中，我们系统地操控了这些因素中的每一个，以确定哪些因素实际上有助于产生旋转柱体（前方的增减）的解释。在实验1中，每个区域的宽度保持固定，同时操控区域的数量，在实验2中，整个显示的宽度保持固定。观察者指出他们认为哪些区域组在前方。在两个实验中，当几何图形线索有利于图形解释并且所有区域都引入纹理运动（而不是仅在每个边界的一侧）时，增减区域最有可能被视为在前方。区域数量的影响相对较小（尽管在实验2中这种影响更大）。这些发现表明，遮挡轮廓的几何形状是增减解释中的一个关键因素，未来涉及增减的三维解释模型必须将轮廓几何形状作为关键组成部分。
