COMPARING DIFFERENT IHS-BASED PAN-SHARPENING TECHNIQUES FOR WORLDVIEW-2 HIGH RESOLUTION SATELLITE IMAGERY

Nowadays, with rapid development in sensor technologies, better spectral and spatial resolutions are available by the high resolution satellite imageries. These new capabilities motivate the idea to explore existing pan-sharpening techniques to find the best and also to modify them somehow to profit from the new capabilities. Over the last two decades, a wide range of pan-sharpening methods have been proposed to synthesize the data which contain both high spatial and spectral characteristics of the multispectral and panchromatic images. This paper evaluates the potential of different IHS-based pan-sharpening techniques for worldview-2 high resolution satellite imagery. It has been proved that the main reason of spectral distortion of IHS-based method is the difference between the spectral response of the Pan and Intensity component. Obtained results in this paper clearly show the superiority of spectral quality of the IGIHS-AW and spatial quality of traditional IHS in comparison with other IHS-based techniques.