International Journal of Engineering and Technology

Pan-sharpening methods permitto synthetize new imagesstarting from panchromatic and multispectral data. The first type of images hasa higher spatial resolution but a lower radiometric resolution than the second. Fused images have the radiometric information of the multispectral data and the pixel dimensions of the panchromatic data. In this paper, three pan-sharpening methods to improve geometric characteristics of the multispectral images are considered:IHS (Intensity, Hue, Saturation), Brovey and Zhang. WorldView-2 Very High Resolution satellite imagery isconsidered to test these methods.Correlation Coefficient, ERGAS (Erreur Relative Globale Adimensionalle de Synthèse), and UIQI(Universal Image Quality Index)are taken into account to evaluate the quality of the obtained fused images.