A Literature Review of Satellite Image Enhancement Methods

Satellite images may be blurred or not clear due to many reasons. Therefore the important information in the images may be not so clear. Image enhancement can improve a satellite image which has complete information but is not visible. Image enhancement method is used to improve the quality of the image to get useful information. Many techniques have been developed to enhance the satellite images. Objective of this paper is to give information and techniques which are useful in satellite image enhancement purpose. General issues of satellite images are enhancement of gray-scale/colour image, noise, artifacts, distortion, large size, resolution, weak colour information, high frequency content and many more. Here given a discussion of the previous work of authors to deal with these issues. So that information which is visible from the image is more informative and helpful to human beings in many applications.