This document discusses image processing and provides examples of its applications. It covers the following key points: 1) Image processing involves analyzing and transforming images and can be used to extract information. The Mars Exploration Rover mission used image processing to compress and send images back to operators on Earth. 2) There are three main types of image processing: image-to-image, image-to-information, and information-to-image. Color spaces and compression techniques like Huffman coding are also discussed. 3) Huffman coding assigns variable length codes to characters based on their frequency, allowing for more common characters to be encoded with fewer bits and improving compression without loss of information. It has numerous applications including in