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本文是关于美国电影艺术和科学学院(电影奥斯卡大奖由此学院颁发)中的科学技术委员会为使数字电影底片扫描器设置方法标准化,建议使用一种学院印片密度(Academy Printing Density)作为设置扫描器用密度测定的技术论述。从理论上比较详尽地介绍了状态M、状态A、扫描器密度、印片密度、染料光谱透过率等之间的区别和相互关系,以及它们与胶片染料光谱密度、扫描器光源功率分布曲线、扫描器传感器光谱灵敏度曲线、正片材料光谱灵敏度曲线等相互间的关系及计算和应用中的考虑;也涉及了色度学的矩阵转换和用多项式的密度转换等。还介绍了学院印片密度的获得和作为扫描器设置用的工作步骤以及实验结果等。
This article is about the CST in the Academy of Motion Picture Arts and Sciences (Academy Award for Film Oscars) To standardize the method for setting up a digital cine film scanner, it is recommended to use a Academy Printing Density as a setup scan Technical Description of Density Measurement. The differences and correlations between state M, state A, scanner density, printing density, dye spectral transmittance and so on are introduced in detail in theory, and their relationship with the spectral density of film dye, the power distribution curve of scanner light source , The spectral sensitivity curve of the scanner sensor, the spectral sensitivity curve of the positive material and so on, and the calculation and application considerations. It also involves the matrix conversion of colorimetric and the density conversion using polynomials. Also introduced the college printing density and scanners used as a set of work steps and experimental results.