Glezer V D, Cooperman A M
Biol Cybern. 1977 Dec 22;28(2):101-8. doi: 10.1007/BF00335290.
On the basis of experimental evidence presented earlier a model of local spectral analysis of the image performed by the complex receptive fields of the visual cortex has been proposed. An essential feature of the model is that the generalized piece-wise Fourier transform is performed not over the image luminance function but over the logarithm contrast function resulted from analysis of the image by the round receptive fields of the preceding levels. Such an assumption removes a number of experimental objections offered against the hypothesis of two-dimensional Fourier transform in the visual system. The consequences from the piece-wise expansion in a series of basic functions have been considered and among them: the channel frequency characteristics which can have more than one maximum; the possibility of describing the image by a limited number of channels with overlapping frequency characteristics; the existence of mechanisms for estimation of phase shift between frequencies.
基于先前给出的实验证据，提出了一种由视觉皮层的复杂感受野执行的图像局部频谱分析模型。该模型的一个基本特征是，广义分段傅里叶变换不是对图像亮度函数进行，而是对由前一级的圆形感受野对图像分析所得到的对数对比度函数进行。这样的假设消除了一些针对视觉系统中二维傅里叶变换假设提出的实验性异议。已经考虑了在一系列基本函数中进行分段展开的结果，其中包括：通道频率特性可能有多个最大值；用有限数量的具有重叠频率特性的通道描述图像的可能性；存在估计频率之间相移的机制。
