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Vol. 114, Issue 3, March 2010, pp. 132-150




LED-Based Colour Sensing System


Ibrahim AL-BAHADLY and Rashid BERNDT

School of Engineering and Advanced Technology,

Massey University, Palmerston North, New Zealand

E-mail: i.h.albahadly@massey.ac.nz



Received: 16 February 2010   /Accepted: 22 March 2010   /Published: 29 March 2010


Abstract: This paper presents a new colour sensing system for measuring the colour of car paint accurately enough to reproduce the paint proportions to cover up scratches or wear on a car. The aim is to repaint a carís damaged area at a fraction of the cost of repainting the whole car. The proposed colour sensing system is based on Light Emitting Diode (LED). A prototype for the system has been designed, built, and tested.


During this work light was researched as well as lighting sources, how light travels, how light reflects and refracts, ways light can be quantized, the human eye, why cameras look accurate, lighting conditions and their effects, and the emergence of colour.


Keywords: Colour sensing, Light Emitting Diode (LED), Paint matching


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