A computational framework for rendering sRGB color from physical light spectra

LİŞESİVDİN B., LİŞESİVDİN S. B.

Journal of Optoelectronics and Advanced Materials, cilt.28, sa.5-6, ss.251-260, 2026 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 28 Sayı: 5-6
  • Basım Tarihi: 2026
  • Dergi Adı: Journal of Optoelectronics and Advanced Materials
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
  • Sayfa Sayıları: ss.251-260
  • Anahtar Kelimeler: CIE 1931 color space, Spectral power distribution, XYZ to sRGB conversion
  • Gazi Üniversitesi Adresli: Evet

Özet

This study introduces a computational method to convert any spectral power distribution (SPD) into its corresponding sRGB color, with practical applications in photonics, material science, and display engineering. Using Python libraries for numerical calculations, interpolation, and visualization, spectral data with the CIE color-matching functions were computed to derive tristimulus values. A matrix transformation from XYZ to the sRGB color space is then applied, followed by normalization and gamma correction to ensure precision. The method shows consistent results across various test spectra with different peak features. Four illustrative examples are provided to demonstrate the accuracy and adaptability of the approach.