190 likes | 466 Views
E N D
1. A Theory for Multiresolution Signal Decomposition: The Wavelet Representation Author: Stephane G. Mallat
Presented by: Yuelong Jiang
2. Content Multiresolution Approximation and Transform
Wavelet Representation in Multiresolution
Laplacian pyramid and FWT
Extension of Wavelet Representation to Image
Some applications
Conclusion
3. Multiresolution Approximation
4. Multiresolution Approximation
5. Multiresolution Transform
6. Fourier Transform of a scaling function
7. Wavelet Representation
8. Wavelet Representation
9. Wavelet Representation
10. Wavelet Representation
11. Wavelet Representation
12. Laplacian Pyramid and FWT
13. FWT
14. FWT
15. Extension to Image
16. Extension to Image
17. Extension to Image
18. Application Compact Coding of Wavelet Image Representation
Texture Discrimination and Fractal Analysis
19. Conclusion Wavelet representation can indicate the signal without information loss.
Through two pass filters, wavelet representation can reconstruct the original signal efficiently.
Compared with Fourier transform, wavelet is localizable in both frequency domain and space domain.
Wavelet representation provides a new way to compress or modify images.