Stark H
Appl Opt. 1971 Feb 1;10(2):333-7. doi: 10.1364/AO.10.000333.
It is known that the diffraction of coherent light can be used for various spatial-noise measurements including the power-spectrum estimation of photographic emulsions. A number of such measurements are presented. The power spectrum of grain noise is compared with several theoretical models. The spectra of grain and phase noise for overexposed film are obtained. A simple procedure for obtaining the variance of the phase noise of photographic film, assuming gaussian statistics and statistical independence between grain and phase noise, is furnished.
众所周知，相干光的衍射可用于各种空间噪声测量，包括摄影乳剂的功率谱估计。文中给出了一些此类测量结果。将颗粒噪声的功率谱与几种理论模型进行了比较。得到了曝光过度胶片的颗粒噪声和相位噪声谱。给出了一种简单的方法，在假设颗粒噪声和相位噪声服从高斯统计且相互独立的情况下，获取摄影胶片相位噪声的方差。
