Shrinkage in the apparent size of cylindrical objects
Shrinkage in the apparent size of cylindrical objects
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DOI：
10.1068/p5597
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发表时间：
2007-01-01
期刊：
影响因子：
1.7
通讯作者：
Miura, Kayo
中科院分区：
文献类型：
--
作者：
Taya, Shuichiro;Miura, Kayo
报道了一种新的视尺寸错觉。我们要求观察者估计的宽度和深度的垂直取向的椭圆柱描绘的纹理或亮度梯度（实验1），或高度的水平取向的椭圆柱描绘的双眼视差（实验2）。圆柱体的估计宽度或高度在逐渐深度变化的方向上显示出系统的收缩。我们的刺激之间的2-D外观的不同意味着空间频率分量和亮度对比度的变化很大，消除了这些参数导致错觉的可能性。此外，由图片深度线索（例如尺寸缩放）不适当地触发的机制可能是无关紧要的，因为即使当双眼视差单独指定圆柱体的形状时也会获得错觉。这里展示的错觉表明，我们的视觉系统可以通过解释它们的深度结构来确定3D物体的大小。
A novel illusion in apparent size is reported. We asked observers to estimate the width and depth of vertically oriented elliptic cylinders depicted with texture or luminance gradients (experiment 1), or the height of horizontally oriented elliptic cylinders depicted with binocular disparity (experiment 2). The estimated width or height of cylinders showed systematic shrinkage in the direction of the gradual depth change. The dissimilarity of 2-D appearance amongst our stimuli implies a large variation in spatial-frequency components and brightness contrasts, eliminating the possibility that these parameters contributed to the illusion. Also, the mechanism inappropriately triggered by pictorial depth cues (eg size scaling) may be irrelevant, because the illusion was obtained even when binocular disparity alone specified the shape of the cylinders. The illusion demonstrated here suggests that our visual system may determine the size of 3-D objects by accounting for their depth structures.