Film Recording of Digital Color Images
Film Recording of Digital Color Images
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数字彩色图像的胶片记录
DOI：
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
Robert H. Wallis
中科院分区：
文献类型：
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作者：
Robert H. Wallis
摘要：本研究的目的是制定一种彩色胶片定量控制技术。具体应用是将数字图像从彩色监视器（或扫描仪）记录到彩色胶片上，并具有最大的比色保真度。由于人类颜色感知本质上是三维的，因此记录过程可以被建模为三维信号通过三元通道的通道。因此，通道对信号施加的失真可以通过输入三矢量的适当预失真来抵消。具体来说，预失真应该是通道映射的数学倒数。开发并测试了用于反转通道映射的方法的层次结构。虽然与反演过程相关的数值误差被证明是微不足道的，但如果预失真基于传统的色彩匹配保真度标准，则在摄影再现中一些主观误差是明显的。开发了一种基于更相关的色觉模型的保真度标准，特别关注色彩适应。使用此模型，可以以出色的保真度生成彩色监视器图像的摄影复制品。
Abstract : The goal of this study is the formulation of a technique for the quantitative control of color film. The specific application is the recording of digital images from a color monitor (or scanner) onto color film with maximum colorimetric fidelity. Inasmuch as human color perception is three-dimensional in nature the recording process can be modeled as the passage of a three- dimensional signal through a trinary channel. Consequently, the distortions imposed upon the signal by the channel can be neutralized by a suitable pre-distortion of the input three-vector. Specifically, the pre-distortion should be the mathematical inverse of the channel mapping. A hierarchy of methods for the inversion of the channel mapping are developed, and tested. Although the numerical errors associated with the inversion process are shown to be insignificant, some subjective errors are apparent in the photographic reproduction if the predistortion is based on traditional fidelity criterion for color matching. A fidelity criterion based on a more relevant model of color vision, with particular attention to chromatic adaption, is developed. Using this model, photographic reproductions of color monitor images can be produced with excellent fidelity.