Construction and Evaluation Standard of Display Gamut for Real Object Color Reproduction

Construction and Evaluation Standard of Display Gamut for Real Object Color Reproduction

As display technology advances from DCI-P3 toward BT.2020, recent four-primary-color displays have achieved over 110% BT.2020 coverage. However, a wider color gamut does not equate to more realistic colors. The ability to reproduce real surface object colors is becoming a core component of television color performance, as it directly determines the visual naturalness of video content.

Existing reference gamuts, such as Pointer's Gamut, are based on outdated samples, while the ISO RCG includes non-surface colors, making them inaccurate for evaluating real object color reproduction. This study constructs a real surface color gamut covering modern paints, textiles, skin, and more, based on over 97,000 spectral data points. In collaboration with TÜV Rheinland, we introduce a perceptual stereo color gamut evaluation system based on CAM16. This system not only assesses gamut coverage but also focuses on color reproduction accuracy across different luminance levels. It aims to provide a scientific mapping benchmark for RGB four-primary-color displays, steering the industry from a parameter-driven competition back to visual reality.