Yamada H, Okumura Y, Takahashi N, Hokari S, Kanai Y
Meikai Daigaku Shigaku Zasshi. 1989;18(2):234-43.
We developed a 16k dots x 100 lines Wiener spectrum measurement system using a microscope-television camera combination. Heretofore, the granularity of film was evaluated from Wiener spectrum using Wiener spectral value in the spatial-frequency independent region obtained by microphotometer as the input device, but this factor is determined by the measurement system and the film emulsion density and there were problems in the evaluation of granularity. Therefore we established a new method for evaluating the granularity from Wiener spectral values in the spatial-frequency independent region through a Wiener spectrum measurement system that utilized a microscope-television camera setup as the input device.
我们使用显微镜 - 电视摄像机组合开发了一种16k点×100线的维纳频谱测量系统。在此之前，胶片的颗粒度是通过使用显微光度计作为输入设备在空间频率独立区域中获得的维纳谱值从维纳频谱来评估的，但这个因素由测量系统和胶片乳剂密度决定，并且在颗粒度评估方面存在问题。因此，我们建立了一种新的方法，通过使用显微镜 - 电视摄像机设置作为输入设备的维纳频谱测量系统，从空间频率独立区域中的维纳谱值来评估颗粒度。
