三维镜像对称和三维旋转对称的视觉检测

IF 1.7 4区心理学 Q3 PSYCHOLOGY, EXPERIMENTAL

VISUAL COGNITION Pub Date : 2022-09-14 DOI:10.1080/13506285.2022.2139314

T. Sawada, M. Farshchi

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引用次数: 2

摘要

由于我们日常生活中的许多物体都是三维对称的，因此检测三维对称性对人类视觉系统非常重要。许多是三维镜像对称的，其他是三维旋转对称的。但请注意，他们的视网膜图像仅在退化视图中是二维对称的。有人认为，人类观察者甚至可以从3D镜像对称轮廓对的2D视网膜图像中检测到3D镜像对称。视网膜图像中存在基于模型的镜面对称对轮廓的不变量，并且当轮廓单独为平面时存在额外的不变量特征。也有基于模型的三维旋转对称轮廓对的不变量。三维镜像对称和旋转对称的这些不变特征彼此相似，但三维旋转对称的特征在计算上比三维镜像对称的特征更困难。实验1表明，只有三维镜像对称能够被可靠地检测出来，而三维旋转对称的检测接近机会水平。实验2表明，三维镜像对称的检测部分是基于模型的三维镜像对称不变量和轮廓的平面性。这些结果表明，视觉系统已经进化到有利于三维镜像对称的感知。

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Visual detection of 3D mirror-symmetry and 3D rotational-symmetry

ABSTRACT Detecting 3D symmetry is important for the human visual system because many objects in our everyday life are 3D symmetrical. Many are 3D mirror-symmetrical and others are 3D rotational-symmetrical. But note that their retinal images are 2D symmetrical only in degenerate views. It has been suggested that a human observer can detect 3D mirror-symmetry even from a 2D retinal image of a 3D mirror-symmetrical pair of contours. There are model-based invariants of the 3D mirror-symmetrical pair of contours in the retinal image and there are additional invariant features when the contours are individually planar. There are also model-based invariants of a 3D rotational-symmetrical pair of contours. These invariant features of 3D mirror-symmetry and rotational-symmetry are analogous to one another but the features of 3D rotational-symmetry are computationally more difficult than the features of 3D mirror-symmetry. Experiment 1 showed that only 3D mirror-symmetry could be detected reliably while the detection of 3D rotational-symmetry was close to chance-level. Experiment 2 showed that the detection of 3D mirror-symmetry is partly based on the model-based invariants of 3D mirror-symmetry and the planarity of the contours. These results show that the visual system has evolved to favour the perception of 3D mirror-symmetry.

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来源期刊

VISUAL COGNITION PSYCHOLOGY, EXPERIMENTAL-

CiteScore

4.20

自引率

10.00%

发文量

期刊介绍： Visual Cognition publishes new empirical research that increases theoretical understanding of human visual cognition. Studies may be concerned with any aspect of visual cognition such as object, face, and scene recognition; visual attention and search; short-term and long-term visual memory; visual word recognition and reading; eye movement control and active vision; and visual imagery. The journal is devoted to research at the interface of visual perception and cognition and does not typically publish papers in areas of perception or psychophysics that are covered by the many publication outlets for those topics.