Additive color mixing modulated by digital pulses enables universal applications in lights and displays. Conventional methods map binarized signals to ordinary red–green–blue color spaces, loosely connected with the color perception of human eyes, causing the complexity of gamut mapping and inaccuracy of chromatic manipulations. Here we developed a complete theory that encodes and decodes digital signals directly to a perceptually nonuniform color space of the commission internationale de l’éclairage, featuring a strict bijection between the duty cycles of each binary pulse and color components of the mixed light and an analytic nonlinear gamut volume. Exemplary applications in biophotonic lighting, active full-color displaying, and metaphotonic sensing confirmed our theory. The method applies to the fields with accurate manipulations of chromaticity and luminosity of a light, opening an avenue toward the next generation of perceptual displays, cameras, and sensors.

中文翻译：

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由加性数字脉冲编码的非线性色彩空间

由数字脉冲调制的附加颜色混合可实现灯和显示器的通用应用。传统方法将二值化信号映射到普通的红-绿-蓝颜色空间，与人眼的颜色感知松散连接，导致色域映射的复杂性和色度操作的不准确性。在这里，我们开发了一个完整的理论，将数字信号直接编码和解码到国际照明委员会的感知上不均匀的色彩空间，其特点是每个二进制脉冲的占空比和混合光的颜色分量之间存在严格的双射非线性色域体积。在生物光子照明、主动全色显示和超光子传感方面的示例应用证实了我们的理论。