JPEG 2000 Still Image Data Compression

Abstract

In the last few years technology advancement of digital processors and digital storage devices have resulted in dramatic reduction in the size and cost of digital memory and digital processing logic. The manipulation and analysis of digital pictorial information is referred to as digital image processing. Image data compression comes under the category of digital image processing. Image compression is the method of effectively coding digital images to reduce the number of bits required in representing an image. The purpose of doing so is to reduce the storage and transmission costs while maintaining good quality. There are two methods of compression, Lossy compression and Lossless compression. With the increasing use of multimedia technologies, Image compression requires higher performance as well as new features. To address this, need in the specific area of still image encoding, a new standard is used, the JPEG2000. It is interesting to note that JPEG2000 is being designed to address the requirements of a diversity of applications, e.g. internet, colour facsimile, printing, scanning, digital photography, remote sensing, mobile applications, medical imagery, digital library and E-commerce. We have implemented the basic architecture of the JPEG2000 using MATLAB. It can be used for both gray-scale and colour images.