sRGB 与XYZ 空间变换
ITU-R BT.709 XYZ 三刺激值
sRGB Gamma 公式
ACES2065-1 色域
The Academy Color Encoding System (ACES) is a global standard for interchanging digital image files, managing color workflows and creating masters for delivery and archiving.
It is a combination of SMPTE standards, best practices, and sophisticated color science developed by hundreds of professional filmmakers and color scientists under the auspices of the Science and Technology Council of the Academy of Motion Picture Arts and Sciences. It aims to be the filmmaking industry standard for managing color.
ACES can be used on any type of production from features to television, commercials, AR/VR and more.
ACES2065-1 定义了一个特别宽广的色域,包含了所有可见颜色,三基色点定义在可见区之外。白点采用CIE D60,坐标 x = 0.32168, y = 0.33767。ACES2065-1 常简称为AP0, 即“ACES Primaries 0”,主要用于视频数据存储,采用线性gamma。
ACES系列色域的区别
DCI P3 色域
DCI-P3是美国电影行业推出的一种广色域标准,是目前数字电影回放设备的色彩标准之一。它的色域较大,与sRGB相比,绿色和红色的范围更广。DCI-P3能更好的满足人类视觉体验,适用于数字电影,电视剧后期制作、调色等。
在CIE 1931 xy