Multi-spectral analysis would be the best technology to use when analyzing the pigments in a large mural. This technology involves capturing images of the mural under different wavelengths of light, including visible light and non-visible regions such as infrared and ultraviolet. By analyzing the reflectance and absorption patterns of the different wavelengths, multi-spectral analysis can provide valuable insights into the pigments used, their composition, and potential alterations or fading over time. This allows for a comprehensive and detailed understanding of the colors and materials used in the mural, aiding in restoration, preservation, and documentation efforts.
