Color Fading: Variation of Colorimetric Parameters with Spectral Reflectance

The article aims to investigate the effect of shifting of spectral reflectance on colorimetric parameters due to solar exposure of the commercially available artificial fabric-based vegetation. The spectral reflectance of the control (samples at time t0) and exposed samples (time t0+t) are measured and analyzed in the visible region using a spectrophotometer. The CIE XYZ color coordinates are computed from the measured spectral reflectance. The XYZ represents the area under the multiplied spectral reflectance, illuminant and observer function. The XYZ parameters are computed for D65 illuminant and 10o observer function. The change in the XYZ with wavelength is discussed to correlate the deviation of the XYZ with color fading. The L*a*b and sRGB values are derived from the XYZ to visualize the color change. The work finds a range of applications in color based process automation, object discrimination and remote sensing for change analysis.