Programs
DCT.pro
JPEG.pro
JPEG_Demo1.pro
JPEG_Demo2.pro
JPEG_Demo3.pro

The JPEG Still Picture Compression Standard
Gregory T. Wallace

JPEG Compression Algorithm and Associated Data Structures
Mark D. Schroeder -- University of North Dakota
Abstract
JPEG, an image compression standard sanctioned by the ISO (International Standards Organization), gives users the ability to take an image and compress it with little or no noticeable quality degradation. The original image is taken through a series of steps, (initial input, Discrete Cosine Transform, quantizat ion, and enc oding) each of which contributes to the overall compression of the image. Compression ratios for a 24-bit color image can be as high as 100:1! At that ratio, however, there is noticeable image degradation, even at normal magnification. Usual image compression ranges from 10:1 to as high as 20:1 without any visible image degradation (Leemans, n.d.).

Multimedia Communications: Image Compression
Some slides that give a good perspective on JPEG compression in the setting of other approaches.

Compression FAQ page. See Item [75]