Investigation of light source effects on digital camera-based spectral estimation

The influence of light sources on digital camera-based spectral estimation is explored. CIE daylight and non-CIE illuminants with different Correlated Color Temperature (CCT) are first tested comparatively, results indicate that CCT can be used to describe the performance for but not applicable all types sources. To further investigate mechanism effects estimation, several handmade special shape Spectral Power Distribution (SPD) tested, show red component in visible spectrum crucial a higher accuracy. Finally, feature metrics SPD proposed evaluate illustrate better