粒度和维纳频谱感光层的粒度是指感光层经过均匀曝光和均匀显影之后,其密度在该层各处起伏的程度。如本文开始时所指出,这种密度的起伏是一种随机现象,即它根源于一些“机遇”的因素。因此,为定量地描写它,通常需要利用统计的方法。这里,最简单易行的办法似乎是在感光层的n个(通常要求n≥1000)不同的点处分别测量其密度值D_1、D_2、……D_i……D_n,求出这些密度值的算求平均数 Particle Size and Wiener Spectra The grain size of a photosensitive layer refers to the degree to which the density of the photosensitive layer fluctuates throughout the layer after uniform exposure and uniform development. As the beginning of this article points out, this density fluctuation is a stochastic phenomenon, that is, it is rooted in some “chance” factors. Therefore, in order to quantitatively describe it, it is usually necessary to use statistical methods. Here, the easiest way seems to be to measure the density values ​​D_1, D_2, ... D_i, ..., D_n separately at n points (usually n ≧ 1000) of the photosensitive layer, and calculate these density values Find the average