For those who are not aware, most of the examples descript here had been post in MATLAB Central:
1. Speech Analysis using LPC
2. Character Recognition Example (III):Training a Simple NN for classification
3. Simple DIP demos
4. Video Surveillance Using MATLAB and Image Acquisition Toolbox
5. Icon Menu
6. Character Recognition Example (I&II): Pre-processing of Image
7. Simple Shape Detection using Hough Transform
8. DTMF generator using TI C6711 DSK
9. Using RTW and Compiler
10. Hough Transform for Circle Detection (GUI)
11. Drawing Transparent Object on Image