Effect of display size on color matching performance

Area of Science:

• Color Science
• Display Technology
• Human Visual Perception

Background:

• Color matching functions (CMFs) are crucial for accurate color specification and calibration in modern display systems.
• The influence of stimulus size on CMF performance, particularly in conjunction with display primary characteristics, has been under-investigated.
• Understanding these interactions is vital for developing precise color reproduction technologies.

Purpose of the Study:

• To investigate the effect of stimulus size on color matching experiments.
• To explore the interplay between stimulus size and different primary sets used in displays.
• To propose size-dependent CMF recommendations for practical applications.

Main Methods:

• Conducted four groups of color matching experiments.
• Utilized a wide range of stimulus sizes and primary sets.
• Analyzed the role of stimulus size, particularly concerning display primary wavelengths (green and blue).

Main Results:

• Stimulus size was found to be a critical factor influencing color matching outcomes.
• This effect was particularly pronounced when displays used distinct wavelengths for green and blue primaries.
• The study established a relationship between field of view (FOV) and CMF performance.

Conclusions:

• Color matching performance is significantly size-dependent, especially with specific display primaries.
• Proposed a classification of stimulus sizes into small (FOV < 4°), medium (4° < FOV < 10°), and large (FOV > 10°).
• Recommended Asano2 (2°), CIE 2006 4°, and Asano7 (10°) CMFs for small, medium, and large FOV categories, respectively.