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| Paper: | IMDSP-P2.9 |
| Session: | Restoration |
| Time: | Tuesday, May 18, 13:00 - 15:00 |
| Presentation: |
Poster |
| Topic: |
Image and Multidimensional Signal Processing: Image and Video Coding |
| Title: |
DEBLOCKING DCT-BASED COMPRESSED IMAGES WITH WEIGHTED TOTAL VARIATION |
| Authors: |
François Alter; École Normale Supérieuré | | |
| | Sylvain Durand; Université de Picardie | | |
| | Jacques Froment; Université de Bretagne-Sud | | |
| Abstract: |
Coding systems based on block DCT, such as JPEG standard, are known to produce blocking and Gibbs effects. We propose a method to remove these artifacts without smoothing images and without loosing there perceptual features. It consists in an weighted Total Variation minimization constrained by the knowledge of quantization intervals. A fast algorithm is proposed and experiments suggest better performance than state-of-the-art deblocking algorithms. |
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