Proceedings ArticleDOI
Lossy image coding in the pixel domain using a sparse steering kernel synthesis approach
Ruben Verhack,Andreas Krutz,Peter Lambert,Rik Van de Walle,Thomas Sikora +4 more
- pp 4807-4811
TLDR
This paper introduces a novel compression scheme: Sparse Steering Kernel Synthesis Coding (SSKSC), which performs non-uniform sampling based on the smoothness of an image, and reconstructs the missing pixels using adaptive kernel regression.Abstract:
Kernel regression has been proven successful for image de-noising, deblocking and reconstruction. These techniques lay the foundation for new image coding opportunities. In this paper, we introduce a novel compression scheme: Sparse Steering Kernel Synthesis Coding (SSKSC). This pre- and postprocessor for JPEG performs non-uniform sampling based on the smoothness of an image, and reconstructs the missing pixels using adaptive kernel regression. At the same time, the kernel regression reduces the blocking artifacts from the JPEG coding. Crucial to this technique is that non-uniform sampling is performed while maintaining only a small overhead for signalization. Compared to JPEG, SSKSC achieves a compression gain for low bits-per-pixel regions of 50% or more for PSNR and SSIM. A PSNR gain is typically in the 0.0–0.5 bpp range, and an SSIM gain can mostly be achieved in the 0.0–1.0 bpp range.read more
Citations
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Journal ArticleDOI
Steered Mixture-of-Experts for Light Field Images and Video: Representation and Coding
TL;DR: A novel coding framework for higher-dimensional image modalities, called Steered Mixture-of-Experts (SMoE), which performs comparable to the state of the art for low-to-mid range bitrates with respect to subjective visual quality of 4-D LF images and 5- D LF video.
Proceedings ArticleDOI
A universal image coding approach using sparse steered Mixture-of-Experts regression
TL;DR: This work introduces a sparse Mixture-of-Experts regression approach for coding images in the pixel domain and attempts to design the coder and decoder “universal”, such that MPEG-7-like low- and mid-level descriptors are an integral part of the coded representation.
Proceedings ArticleDOI
Video representation and coding using a sparse steered mixture-of-experts network
TL;DR: A novel approach for video compression that explores spatial as well as temporal redundancies over sequences of many frames in a unified framework and developed a sparse Steered Mixture-of-Experts (SMoE) regression network for coding video in the pixel domain.
Proceedings ArticleDOI
Lossless image compression based on Kernel Least Mean Squares
TL;DR: Results show that pixel luminance prediction using the Kernel Least Mean Squares (KLMS) yields a significant gain compared to the standard Leastmean Squares algorithm, and the codec is able to outperform the current industry standards of lossless image coding.
Patent
Method and devices for processing input signals
TL;DR: In this article, a method for processing an input signal and generating an output signal based on the input signal was proposed, where each kernel is described by a parameter vector that is defined by a given number of extracted kernel parameters.
References
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Journal ArticleDOI
Image quality assessment: from error visibility to structural similarity
TL;DR: In this article, a structural similarity index is proposed for image quality assessment based on the degradation of structural information, which can be applied to both subjective ratings and objective methods on a database of images compressed with JPEG and JPEG2000.
Journal ArticleDOI
The JPEG still picture compression standard
TL;DR: The Baseline method has been by far the most widely implemented JPEG method to date, and is sufficient in its own right for a large number of applications.
Journal ArticleDOI
The JPEG still picture compression standard
TL;DR: The author provides an overview of the JPEG standard, and focuses in detail on the Baseline method, which has been by far the most widely implemented JPEG method to date, and is sufficient in its own right for a large number of applications.
Journal ArticleDOI
The JPEG 2000 still image compression standard
TL;DR: Some of the most significant features of the standard are presented, such as region-of-interest coding, scalability, visual weighting, error resilience and file format aspects, and some comparative results are reported.
Journal ArticleDOI
Kernel Regression for Image Processing and Reconstruction
TL;DR: This paper adapt and expand kernel regression ideas for use in image denoising, upscaling, interpolation, fusion, and more and establishes key relationships with some popular existing methods and shows how several of these algorithms are special cases of the proposed framework.