Pan-Sharpening Framework Based on Laplacian Sharpening with Brovey

摘要

Pan-sharpening is a rapidly growing independent discipline considered with and finds many applications in several research fields. Pan-sharpening is the merger of high spec-tral resolution multispectral image and high spatial resolution panchromatic image which gives the best of both in the resultant image. This paper presents a novel pan-sharpening hybrid technique by combining Brovey with Laplacian filter (LF). The Laplacian filter is an advanced edge sharpening technique using the second derivative. The Laplacian edge sharpening is playing a significant role to enhance edge contrast to highly improve image visibility (Acutance). The sharpening filter performs to identify sharp edge boundaries in the image, such as the edge between a subject and a background of a contrasting color, and increase the image contrast in the area immediately around the edge. The Brovey is also a popular fusion method used for its ability in preserving the spatial information of an image. The proposed hybrid technique encompasses Brovey with LF to improve the results (Qualitatively and quantitatively) of pan-sharpening. The resultant image is assessed by three performance matrices quantitative metric, qualitative metric, and qualitative error image.