Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Algorithms for Manipulating Compressed Images
IEEE Computer Graphics and Applications
A fast impulsive noise color image filter using fuzzy metrics
Real-Time Imaging - Special issue on multi-dimensional image processing
Geometric features-based filtering for suppression of impulse noise in color images
IEEE Transactions on Image Processing
Detecting double JPEG compression with the same quantization matrix
IEEE Transactions on Information Forensics and Security
On the application of structured sparse model selection to JPEG compressed images
CCIW'11 Proceedings of the Third international conference on Computational color imaging
Double Compression Detection Based on Markov Model of the First Digits of DCT Coefficients
ICIG '11 Proceedings of the 2011 Sixth International Conference on Image and Graphics
-SVD: An Algorithm for Designing Overcomplete Dictionaries for Sparse Representation
IEEE Transactions on Signal Processing
Matching pursuits with time-frequency dictionaries
IEEE Transactions on Signal Processing
The JPEG still picture compression standard
IEEE Transactions on Consumer Electronics
Image quality assessment: from error visibility to structural similarity
IEEE Transactions on Image Processing
Region filling and object removal by exemplar-based image inpainting
IEEE Transactions on Image Processing
IEEE Transactions on Image Processing
IEEE Transactions on Image Processing
Sparse Representation for Color Image Restoration
IEEE Transactions on Image Processing
Instant scene recognition on mobile platform
ECCV'12 Proceedings of the 12th international conference on Computer Vision - Volume Part III
Denoising for Multiple Image Copies through Joint Sparse Representation
Journal of Mathematical Imaging and Vision
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Sparse representations provide a powerful framework for various image processing tasks, among which image recovery seems to be an already classical application. While most developments of image recovery applications are focused on finding the best dictionary, the possibility of using already existing sparse image representations tends to be ignored. This is the case of the JPEG compressed image representation, which is a sparse image representation in terms of the discrete cosine transform (DCT) dictionary. The development of sparse frameworks directly on the JPEG encoded image representation can lead to computationally efficient approaches. Here we introduce a DCT-based JPEG compressed domain formulation of the color image recovery process within a sparse representation framework and we prove mathematically and experimentally not only its numerical efficiency as compared to the pixel level formulation (the processing time is reduced up to 40聽%), but also the good quality of the restoration results.