Image phase or amplitude?: Rapid scene categorization is an amplitude-based process
Image phase or amplitude?: Rapid scene categorization is an amplitude-based process
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DOI：
10.1016/j.crvi.2004.02.006
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发表时间：
2004-04-01
影响因子：
2
通讯作者：
Marendaz, C
中科院分区：
文献类型：
--
作者：
Guyader, N;Chauvin, A;Marendaz, C
视觉皮层的模型基于根据傅立叶频谱（幅度和相位）的图像分解。一方面，人们普遍认为相位信息是识别场景所必需的。另一方面，众所周知，视觉皮层的复杂细胞，数量最多的细胞，只编码幅度谱。这就提出了一个问题，知道这些细胞是否携带足够的信息，以允许视觉场景分类。在这项工作中，使用相同的实验，在计算机模拟和心理物理学，我们提供的参数表明，振幅谱是足够的分类任务。(C)2004年科学院。出版社：Elsevier SAS All rights reserved.
Models of the visual cortex are based on image decomposition according to the Fourier spectrum (amplitude and phase). On one hand, it is commonly believed that phase information is necessary to identify a scene. On the other hand, it is known that complex cells of the visual cortex, the most numerous ones, code only the amplitude spectrum. This raises the question of knowing if these cells carry sufficient information to allow visual scene categorization. In this work, using the same experiments in computer simulation and in psychophysics, we provide arguments to show that the amplitude spectrum alone is sufficient for categorization task. (C) 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved.