Image Compression

Arithmetic coding: http://www.binaryessence.com/dct/en000121.htm
Huffman coding: http://www.ie.u-ryukyu.ac.jp/~wada/design03/spec_e.html

JPEG:
http://www.pcs-ip.eu/index.php/main/edu/1
http://www.ece.ucdavis.edu/cerl/ReliableJPEG/Cung/jpeg.html

Jpeg Code in Java: 
http://www.java2s.com/Code/Java/2D-Graphics-GUI/JPEG.htm

Simulator:
http://www.cs.sfu.ca/CourseCentral/365/li/interactive-jpeg/Ijpeg.html
http://www.site.uottawa.ca/~elsaddik/abedweb/applets/lessons/jpeg/Basics/basics.html

Function Grapher: http://www.mathsisfun.com/data/function-grapher.php

JPEG2000:
Book: Image Compression Fundamentals, Standards and Practice
http://wavelets.pybytes.com/family/haar/
http://www.cs.washington.edu/education/courses/csep521/99sp/lectures/
http://www.cs.cmu.edu/afs/cs/project/pscico-guyb/realworld/www/compress.html
http://www.ti1.tu-harburg.de/Lehre/software/csforum/joocs/buildingblocks.htm
http://en.wikipedia.org/wiki/Quantization_%28signal_processing%29
http://faculty.gvsu.edu/aboufade/web/wavelets/student_work/EF/how-works.html
http://www.jpeg.org/.demo/FAQJpeg2k/coding-and-compression.htm
http://research.microsoft.com/en-us/um/people/jinl/paper_2002/msri_jpeg.htm

JPEG 2000 employs a dead-zone(small input values mapped to zero) uniform scalar quantizer:

JPEG employs uniform scalar quantization.

In the linear quantization, the step size(Qstep) is fixed and uniform means same time interval among samples.