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Unformatted text preview: Multimedia Module No: CM0340 Laboratory Worksheet Lab 6 (Week 8): MATLAB GIF/ LZW and JPEG Compression Prof. D. Marshall Aims and Objectives After working through this worksheet you should be familiar with: • GIF/LZW Compression Algorithm • JPEG Compression Process • The basic use of MATLAB to investigate the above. None of the work here is part of the assessed coursework for this module 1 MATLAB GIF/ LZW and JPEG Compression 1. GIF/ LZW Compression . (a) • Download the Basic Compression Algorithms MATLAB Zipped Files from the CM0340 web pages: http://www.cs.cf.ac.uk/Dave/Multimedia/ Lecture Examples/Basic Compression.zip . • Uncompress and install in an appropriate MATLAB acces- sible directory. • Launch MATLAB and cd to the lzw directory. (b) The demo file lzw_demo1.m reproduces the example discussed in the lecture notes : http://www.cs.cf.ac.uk/Dave/Multimedia/PDF/ 09 CM0340 Basic Compression Algorithms.pdf ....
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This note was uploaded on 01/26/2012 for the course CM 0340 taught by Professor Davidmarshall during the Fall '09 term at Cardiff University.
- Fall '09