Image fusion is defined as the process of combining two or more different images into a new single image retaining important features from each image with extended information content. The result of image fusion is a new image which is more suitable for human and machine perception or further image processing tasks such as segmentation, feature extraction and object recognition. This paper presents review on some of the image fusion techniques i.e. simple average, simple maximum, PCA, DCT, DWT. Comparative study of all these techniques concludes that DWT is better approach.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.