two types of illumination sources were used,
namely Power LED 12 V DC and fluorescent lamp examined
in combination with two models of camera namely Proline
and Telecam (No. Nck 41CV). A dome shaped lighting box was developed. Six Power LEDs were powered by a 12 V
DC source, and a circular 40 cm diameter Fluorescent lamp
was powered by 220 V AC source. The images were captured
according to standard RAL white card, 10 replications per
combination of camera/light source. The RGB values of
images were extracted by Image processing toolbox of Matlab
software. These values were then compared with standard card
value i.e. 255 by SPSS software.