Neural acclimation to 1/f spatial frequency spectra in natural images transduced by the human visual system
Neural acclimation to 1/f spatial frequency spectra in natural images transduced by the human visual system
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DOI：
10.1016/s0167-2789(99)00197-9
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发表时间：
2000-03-15
影响因子：
4
通讯作者：
Billock, VA
中科院分区：
文献类型：
--
作者：
Billock, VA
大多数自然图像虽然明显不同，但具有令人惊讶的规则 1/f(beta) 傅立叶振幅谱（平均 beta：1.05-1.20）。如果视觉系统在这种光谱环境中进化和发展，人类视觉是否会表现出相应的分形特性？将相关分析应用于人体空间频率对比敏感度。成人（而非婴儿）表现出与 1.09-1.20 的 beta 一致的幂律相关结构（与自然图像紧密匹配）。这一结果提供了对人类视觉中多尺度空间频率处理的见解，并为理解对比度控制和运动去模糊等感知现象提供了基础。 (C) 2000 Elsevier Science B.V. 保留所有权利。
Most natural images, although apparently diverse, have surprisingly regular 1/f(beta) Fourier amplitude spectra (average beta: 1.05-1.20). If the visual system evolved and develops in this spectral environment, is there a sense in which human vision displays commensurate fractal properties? Correlation analysis was applied to human spatial frequency contrast sensitivity. Adults - but not infants - show power law correlational structure consistent with a beta of 1.09-1.20 (closely matched to that of natural images). This result provides insights into multi-scale spatial frequency processing in human vision and provides a basis for understanding perceptual phenomena like contrast control and motion deblurring. (C) 2000 Elsevier Science B.V. All rights reserved.