Constrained texture synthesis for image post processing
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
Deringing cartoons by image analogies
ACM Transactions on Graphics (TOG)
Perceptually adaptive joint deringing - deblocking filtering for scalable video coding
MobiMedia '06 Proceedings of the 2nd international conference on Mobile multimedia communications
Digital image source coder forensics via intrinsic fingerprints
IEEE Transactions on Information Forensics and Security
Scale-space method of image ringing estimation
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
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At low bit rates, image compression codecs based on overlapping transforms introduce spurious oscillations known as ringing artifacts in the vicinity of major edges. Unlike previous works, we present a maximum-likelihood approach to the ringing-artifact removal problem. Our approach employs a parameter estimation method based on the k-means algorithm with the number of clusters determined by a cluster-separation measure. The proposed algorithm and its simplified approximation are applied to JPEG2000 compressed images. Our results show effective and efficient removal of ringing artifacts