Perturbation approach to spatial brightness interaction in human vision.
Perturbation approach to spatial brightness interaction in human vision.
复制标题
人类视觉空间亮度相互作用的扰动方法。
DOI：
10.1364/josa.58.001300
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发表时间：
1968
影响因子：
--
通讯作者：
M. Davidson
中科院分区：
文献类型：
--
作者：
M. Davidson
傅里叶分析的工具可以用来解释空间亮度相互作用的视觉现象，只要人们的注意力局限于空间均匀场的微小扰动。文中概述了一种摄动法，并给出了适用于小摄动的传递函数。传递函数是通过心理物理方法从受试者身上获得的，在明视照明水平的短暂闪光、非色差场的情况下。对于每分钟0.005到0.15周的频率范围，传递函数大致与空间频率成正比，因此在很大程度上反映了系统的非光学性质。一种简单的侧向抑制机制可以作为这种传递函数的基础。
The tools of Fourier analysis can be used to explain visual phenomena of spatial brightness interaction, provided that attention is confined to small perturbations of spatially uniform fields. A perturbation approach is outlined here, and a transfer function is presented which is appropriate for small perturbations. The transfer function was obtained from human subjects with psychophysical methods, for the case of briefly flashed, achromatic fields at photopic levels of illumination. For the frequency range of 0.005 to 0.15 cycles per minute of arc, the transfer function is roughly proportional to spatial frequency, thus reflecting, in large part, nonoptical properties of the system. A simple mechanism of lateral inhibition could underlie this transfer function.