Give an overview of various image fusion techniques.

Image fusion is a process in remote sensing and digital image processing where multiple images, typically from different sensors or at different resolutions, are combined into a single image that retains the best features of the input images. The goal is to provide a more comprehensive and informative representation of the scene being observed. Various techniques are employed for image fusion, each with its strengths and limitations, depending on the application and data types. Here’s an overview of several common image fusion techniques used in remote sensing and digital image processing.

1. Pixel-level Fusion: Pixel-level fusion involves merging images at the individual pixel level. This method is straightforward and directly combines the data from different sources, aiming to preserve spatial and spectral details. Common pixel-level fusion techniques include:

   • Intensity-Hue-Saturation (IHS) Transformation: This technique transforms the image into three components—Intensity, Hue, and Saturation. The high-resolution panchromatic image is used to replace the intensity component, while the hue and saturation components remain unchanged. The inverse transformation reconstructs the fused ________ _______ ____ ____ ________ _________ ____.
     ____ __________ ________ _______ _______ ___ ______ _______ ____ ________.
     __________ ___ __________ ______ ____ ____.
     ________ ___ ________ ___ __________ _______ ________.
     _________ ______ ___ _______ _______.
     ______ _______ _____ __________ ____ ________ ___ ______ ____.
     ______ ______ ______ ___ ______ ______ _____ __________ __________ ______ ________ _________.
     _______ ________ ____ _______ ____ ________ _________ ________ ____ ______ ______.
     ______ ____ ______ ________ _________ __________ _______ _________ ____ ______.
     _____ _____ ______ ____ __________ _____.
     ___ _________ ______ ___ _____ ________ ______.
     ___ _________ __________ __________ ____ ___ _____ _________ __________ ___ _________ ________.
     ________ _____ __________ ______ _____ _________ ______ ___ _________ ____ _____.
     ____ ____ _______ _________ ________ ____.
     _______ ____ _____ _________ ________ _______ ___ ______ ________ ____.
     _____ ______ ___ ___ ____ ______ ___.
     __________ _______ _____ _________ ___ _____ ___ ____ _______.
     ___ _________ __________ ________ __________ ____ ____ __________ ______ _________ _________ ___.
     ____ ________ _________ ___ _______ ______ ________ __________ ________.
     ___ __________ _______ _____ _______ _____ _________ ________ ________ ________ _________ ______.
     ________ __________ _________ __________ ________.
     ___ ______ ________ __________ _________.
     _________ ____ ___ ______ _____ _________ ________ ____ ___ ____.
     _______ ___ ___ _______ _____ _______ ________ ____ _______ _____ ________.
     __________ ____ __________ _________ ___ _________ ________ ____ __________ ______.
     ___ ______ _______ _________ ____.
     _______ ________ _____ ____ _______ ____ _________ ________ _________ ______.
     ____ ________ _________ ________ _________ ________.
     ________ ____ _____ _________ ______.
     ______ _________ ___ ________ ___ ______ _____ ________.
     ____ _____ ____ ________ _______ __________.
     _________ __________ _____ ___ ___ ______ ______ ___.
     ____ ______ __________ ________ ______ _____ _______ ______ __________ ________ ___.
     ____ ______ __________ ___ ____ _____ ___ ____ ________.
     ______ _________ ______ ____ ___ __________ _______ ______ ___.
     ______ _______ ___ ___ _______ _____ _________.
     ____ ___ ____ _______ _____ ___ ___ _________.
     ___ __________ _____ ________ __________ ___ __________ __________ ______ ___ __________ ______.
     _________ _____ ______ ______ ____ _________ _________ ________ __________ ________ _______ ________.
     ____ __________ ________ ______ __________ _____ _______ _____.
     _________ ________ __________ __________ ______ _________ _______ _____.
     __________ _______ ______ _____ _______ _____ _________ ______ ____ _______.
     ____ _________ _____ _________ _______.
     ______ _________ __________ __________ ________ ____ _________ __________ __________ ________ ____.
     __________ ____ _______ ____ _______ _________.
     _________ _________ __________ _________ __________ ___ _________ ________ _____ __________ ____ ________.
     _________ ______ ________ _________ ______ __________ ___ ______ ______.
     _________ _______ _______ _____ ____ ______ _______.
     __________ ___ ____ ______ _________ _______ _______ _____.
     __________ ___ __________ ____ ________ ____ ___ ____.
     ____ _________ __________ ___ _________ __________.
     ___ __________ ________ _______ ___ _____ _________.
     __________ ________ ________ __________ __________ _________ _______ __________.
     ________ ______ _____ _______ ___.
     ________ _______ ___ __________ _______ _____ ______ ________.
     ________ _______ _______ ___ ___ _________ _________ _____ ______.
     _______ _________ _______ ___ _____ ____ _________.
     ________ ________ ______ ____ _____ ___ _______ __________ ________ ______ _________ ____.
     ______ ____ _________ ______ _________ __________.
     ___ _____ ____ ____ ____ ________ ___ __________.
     ___ __________ _______ ___ _______ ____ ___ ________ _______.
     __________ ___ ___ ____ _____ ___ ________.
     _________ _________ _________ _______ ________ _______ ______ __________.
     ______ ______ __________ _________ ___ __________ _____.
     ____ ___ ____ _______ _____ ________.
     ______ ______ __________ _____ ___ ____.
     ____ ______ _________ ___ _______ ______ _____ ___ ___ _________ _______ _____.
     ______ ____ ________ _____ ___ _________ ____ _________.
     ____ _________ ______ _______ _________ ________ ______.
     ____ ______ _____ ____ __________.
     __________ ____ ____ _________ ________ ___ ______.
     ______ ____ _____ ____ ________ ______ __________ ________ ________.
     _______ ________ ________ ____ ____ _______ __________ _____ _____ _______ ____ __________.
     ___ _________ ______ ___ ______.
     ______ ______ _______ ________ _________.
     ____ ________ _______ ________ ____ _________ ___ ______ ____.
     __________ _______ ___ _______ _______ __________ __________.
     __________ __________ ______ __________ _________ _________ __________ _______.
     ______ _________ ______ _______ ______ ________ _______ ______ ___.
     ___ _________ __________ _________ ________ _________ ____ ____ ______.
     ___ ____ ________ ________ ___ ________.
     ______ ___ ___ ____ ______ _________ _______ ___ _______.
     __________ __________ ____ ___ ____ _______ ____.
     Get Full Answer on WhatsApp