[Analysis of Observers Metamerism Differences for Different Retinal Cone Visual Responses]

Area of Science:

• Color Science
• Visual Perception
• Physiological Optics

Background:

• Understanding cone spectral responses is crucial for accurate color reproduction.
• Observer metamerism, variations in color perception among individuals, poses challenges in color matching.

Purpose of the Study:

• To investigate cone spectral responses under varying conditions for different age groups.
• To evaluate the performance of eleven color matching functions based on experimental data.

Main Methods:

• Color matching experiments were conducted with 27-35 observers using nine color patches under four viewing conditions.
• Spectral data from experiments were compared to target colors to assess eleven color matching functions (e.g., CIE1931, CIE2006, S1-S8).

Main Results:

• CIE2006 and Sarkar's S6 color matching functions performed best; S1 and S2 performed worst.
• Observer age significantly influences retinal cone spectral responses.
• Observer metamerism is primarily linked to differences in the (A) channel's spectral response, not peak wavelength shifts.

Conclusions:

• Age is a significant factor in visual spectral responses and observer metamerism.
• The findings support classifying color matching functions for different observer categories.
• This research provides a theoretical basis for understanding observer metamerism.