Comparative color gamut analysis of xvYCC standard

摘要

In the paper, a new wide color gamut encoding standard of IEC, namely xvYCC, has been extensively studied. To judge a correct volume size of the color gamut, the xvYCC color space has been analyzed in a part of physically possible legal and impossible illegal colors. Within the legal colors, the gamut volume of the xvYCC has been computed in CIE-LAB uniform color space, and compared with theoretical possible optimal colors as all human visible colors in various color spaces of CIE-xy, xvYCC, and CIE-LAB. Because of a color gamut limitation of the optimal surface colors, a new optimal illuminant color space has been introduced for the CIE-XYZ tri-stimulus sensor. With this, the gamut volume of xvYCC can be better analyzed than before. In addition, the xvYCC color gamut has been compared with the volume of typical three types of CRT-, LED-, and Laser-displays.