Díaz J A, Jiménez J R, Hita E, Del Barco L J
Appl Opt. 1996 Apr 1;35(10):1711-8. doi: 10.1364/AO.35.001711.
Before a CRT color display is calibrated, the levels of the brightness and contrast controls should be considered. These levels have different effects on the relationship between the chromaticity coordinates of the red-green-blue (RGB) channels and the voltage applied to the gun as well as on the color gamut. Using three different CRT color displays, we measured both these relationships as well as the color gamut for different combinations of brightness and contrast levels. With respect to the luminance range of the white point provided by each display, the results show that the assumption of constant-channel chromaticity of the RGB channels is more valid at medium- to low-brightness levels in combination with high-contrast levels. In addition, this assumption holds at high contrast and medium- to low-brightness levels, the color gamut being optimized at these combinations of levels, with regard to the size of the triangle of primaries-the maximum luminance of the display white point.
在对阴极射线管（CRT）彩色显示器进行校准时，应考虑亮度和对比度控制的设置。这些设置对红-绿-蓝（RGB）通道的色度坐标与施加到电子枪的电压之间的关系以及色域有不同影响。我们使用三台不同的CRT彩色显示器，测量了这些关系以及不同亮度和对比度设置组合下的色域。关于每个显示器提供的白点亮度范围，结果表明，在中低亮度水平与高对比度水平相结合的情况下，RGB通道色度恒定的假设更有效。此外，在高对比度以及中低亮度水平下，该假设成立，就原色三角形的大小（显示器白点的最大亮度）而言，色域在这些设置组合下得到优化。
