Color Image Coding Based on Block Truncation Coding using Quadtree Segmentation

In this paper, we proposed a bit-rate adjustable color image compression technique based on block truncation coding. To exploit the similarity among the neighboring pixels, the quadtree segmentation technique is used to divide the color image into variable-sized blocks based on their block activities. Different rules are used to encode the image blocks of different sizes. Experimental results reveal that good image qualities of the reconstructed color images can be achieved by the proposed technique while keeping low bit rates.