1. A VQ-Based Blind Image Restoration Algorithm
Source: IEEE Transaction on Image Processing, pp. 1044~1053, 2003
Author: Ryo Nakagaki and Aggelos K. Katsaggelos
Speaker: Gary Lin

2. Problem: image restoration
Original
Blurred
Restored

3. Basic idea VQ codebooks are designed for the restoration problem
Low frequency information of the degraded image
High frequency information of the original image

4. Concept map Low pass High pass Codebook Design Low-pass filtered image
Original image
High-pass filter image estimation
High-pass filtered image
Codebook Design

5. Codebook construction
Low-pass filtered image
High-pass filtered image
Original image . .
Codebook Design

6. Codebook construction & image restoration
Original image
Blurred image

7. Codebook construction for Blind image

8. Blurred functions
Gaussian
Uniform
Rayleigh
Gamma

9. Blind image restoration

10. Gaussian blur function
Experiments
Original image
BSNR=20dB
BSNR=10dB
Gaussian blur function
Restoration
Restoration

11. Experiments
Restoration image
Original image
Blurred image