Satellite Image Enhancement and Analysis

Abstract

Geographic Information System (GIS) stores large volumes of spectral data (raw facts) acquired by sensors located at the satellite and convert them into features and information in order to provide answers to many questions and for easy retrieval and display based on the user needs. The conversion of data to information involves a lot of processing. The preprocessing, especially, is required for the following reasons: To restore the satellite image quality in the presence of known or unknown degradations and noises.To extract or highlight hidden details in the satellite image.To extract regions or statistical and nonstatistical features of interest for analysis and classification purposes.To geometrically correct the images for mapping and georeferencing. This chapter describes various image enhancement methods, noise removal methods, image stitching and interpolation methods, segmentation, multivariate image processing techniques, and other image transformations.