Multiscale sparse image representation with learned dictionaries
Publication
, Journal Article
Mairal, J; Sapiro, G; Elad, M
Published in: Proceedings - International Conference on Image Processing, ICIP
December 1, 2006
This paper introduces a new framework for learning multiscale sparse representations of natural images with overcomplete dictionaries. Our work extends the K-SVD algorithm [1], which learns sparse single-scale dictionaries for natural images. Recent work has shown that the K-SVD can lead to state-of-the-art image restoration results [2, 3]. We show that these are further improved with a multiscale approach, based on a Quadtree decomposition. Our framework provides an alternative to multiscale pre-defined dictionaries such as wavelets, curvelets, and contourlets, with dictionaries optimized for the data and application instead of pre-modelled ones. © 2007 IEEE.
Duke Scholars
Published In
Proceedings - International Conference on Image Processing, ICIP
DOI
ISSN
1522-4880
Publication Date
December 1, 2006
Volume
3
Citation
APA
Chicago
ICMJE
MLA
NLM
Mairal, J., Sapiro, G., & Elad, M. (2006). Multiscale sparse image representation with learned dictionaries. Proceedings - International Conference on Image Processing, ICIP, 3. https://doi.org/10.1109/ICIP.2007.4379257
Mairal, J., G. Sapiro, and M. Elad. “Multiscale sparse image representation with learned dictionaries.” Proceedings - International Conference on Image Processing, ICIP 3 (December 1, 2006). https://doi.org/10.1109/ICIP.2007.4379257.
Mairal J, Sapiro G, Elad M. Multiscale sparse image representation with learned dictionaries. Proceedings - International Conference on Image Processing, ICIP. 2006 Dec 1;3.
Mairal, J., et al. “Multiscale sparse image representation with learned dictionaries.” Proceedings - International Conference on Image Processing, ICIP, vol. 3, Dec. 2006. Scopus, doi:10.1109/ICIP.2007.4379257.
Mairal J, Sapiro G, Elad M. Multiscale sparse image representation with learned dictionaries. Proceedings - International Conference on Image Processing, ICIP. 2006 Dec 1;3.
Published In
Proceedings - International Conference on Image Processing, ICIP
DOI
ISSN
1522-4880
Publication Date
December 1, 2006
Volume
3