Local Adaptivity to Variable Smoothness for Exemplar-Based Image Regularization and Representation
International Journal of Computer Vision
High performance scalable image compression with EBCOT
IEEE Transactions on Image Processing
Image Denoising Via Sparse and Redundant Representations Over Learned Dictionaries
IEEE Transactions on Image Processing
Kernel Regression for Image Processing and Reconstruction
IEEE Transactions on Image Processing
Pointwise Shape-Adaptive DCT for High-Quality Denoising and Deblocking of Grayscale and Color Images
IEEE Transactions on Image Processing
Image Denoising by Sparse 3-D Transform-Domain Collaborative Filtering
IEEE Transactions on Image Processing
Context-based adaptive binary arithmetic coding in the H.264/AVC video compression standard
IEEE Transactions on Circuits and Systems for Video Technology
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The lately popularized patch-based nonlocal (NL) image processing approach is cast into a framework of statistical context modeling, a thoroughly studied topic in data compression and information theory. The adaptation of imate patch (context) to local waveform is crucial to the performance of NL-type of image processing but yet lacks a rigorous study. In this paper we propose a minimum description length (MDL) approach for choosing the size and spatial configuration of the context in which a degraded pixel is to be restored. The MDL criterion of context formation aims to strike an optimal balance between the variance and bias of the errors in fitting a 2D piecewise autoregressive (PAR) model to input image signal. To exemplify the use of the proposed context modeling technique in image processing, an MDL-guided context-based image denoiser is derived and its performance evaluated. Empirical results show that the new context-based denoiser is highly competitive against the current state of the art.