Image Compression Using the Harr Wavelet Transform

12/1/01


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Table of Contents

Image Compression Using the Harr Wavelet Transform

Digitalize the information

PPT Slide

Treat the digit

Extract The First Row

First Computation

First Computation

First Computation

Second & Third Computation

The Picture Again

The Harr wavelet transform

Linear Algebra

First matrix S1

Second matrix S2

Third matrix S3

Orthogonal Matrix

Wavelet Compression

Example for compression

Set the threshold be five

The equation, the MATLAB code and the compressed figure

The MATLAB code

Compare the original (first one) and the compressed (second one) figure

Explanation of the detail coefficients

Conclusion

Thank you for your listening

 Author: Mendocino Coast Campus

Email: ipensive@yahoo.com