Abstract: Color models play an important role in real world applications such as computer graphics, image processing, television broadcasting, etc. Each color model has its own significance and applicable in different application domains. One of the interesting areas of digital image processing is to improve the image information for better processing image information for machine representation. Use of the color spectrum in image processing helps in objects recognition and extraction from the scene. In this paper, various (image) color models are studied to analyse their constituent components, application areas along with their merits and demerits.

Keywords: Color Model, Hue, Saturation, RGB, CMY, HIS.