This document discusses Huffman coding for image compression. It explains that image compression reduces data storage requirements by decreasing redundancies in image representation without visually reducing image quality. Huffman coding builds a tree by combining the two bins with the lowest histogram values until one bin remains, encodes the tree, and then encodes the residual image. Examples are provided to illustrate the Huffman coding algorithm. The summary notes that Huffman coding achieves minimal redundancy by sorting symbols by probability and assigning codewords at each node of the binary tree.