Journal ArticleDOI
Design a deblocking filter with three separate modes in DCT-based coding
TLDR
A novel deblocking algorithm is proposed based on three filtering modes in terms of the activity across block boundaries that outperforms other deblocking algorithms in respect to PSNR (Peak Signal-to-Noise Ratio) and SSIM (Structural SIMilarity).About:
This article is published in Journal of Visual Communication and Image Representation.The article was published on 2008-05-01. It has received 22 citations till now. The article focuses on the topics: Deblocking filter & Image compression.read more
Citations
More filters
Journal ArticleDOI
Algorithm for JPEG artifact reduction via local edge regeneration
TL;DR: The proposed algorithm addresses all three types of artifacts which are prevalent in JPEG images: blocking, and for edges blurring, and aliasing, and enhances the quality of the image via two stages.
Patent
An apparatus, a method and a computer program for video coding
Jani Lainema,Kemal Ugur +1 more
TL;DR: In this paper, an apparatus, a method and a computer program for video coding is described, which consists of a selector configured for selecting a pixel for prediction, a projection definer configured for determining a projection of said pixel to a set of reference pixels, and a prediction definer configurable for selecting one or more reference pixels from said set of target pixels on the basis of said projection.
Journal ArticleDOI
No-reference analysis of decoded MPEG images for PSNR estimation and post-processing
TL;DR: No-reference analysis and processing of DCT (Discrete Cosine Transform) coded images based on estimation of selected MPEG parameters from the decoded video to assess MPEG video quality and perform post-processing without access to neither the original stream nor the code stream.
Patent
Blockiness metric for large hevc block artifacts
TL;DR: In this article, a method for encoding video data includes determining a first value for a line of a first plurality of lines, where the first line is perpendicular to a first edge of a block of the video data.
Journal ArticleDOI
Detection method and filters for blocking effect reduction of highly compressed images
TL;DR: A low computational deblocking filter with four modes is proposed, including three frequency-related modes (sm smooth, non-smooth, and intermediate) and a corner mode for the corner of four blocks and achieves better detail preservation and artifact removal performance.
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
A universal image quality index
Zhou Wang,Alan C. Bovik +1 more
TL;DR: Although the new index is mathematically defined and no human visual system model is explicitly employed, experiments on various image distortion types indicate that it performs significantly better than the widely used distortion metric mean squared error.
Book
JPEG: Still Image Data Compression Standard
TL;DR: This chapter discusses JPEG Syntax and Data Organization, the history of JPEG, and some of the aspects of the Human Visual Systems that make up JPEG.
Journal ArticleDOI
Iterative procedures for reduction of blocking effects in transform image coding
TL;DR: An iterative block reduction technique based on the theory of a projection onto convex sets to impose a number of constraints on the coded image in such a way to restore it to its original artifact-free form.
Journal ArticleDOI
Efficient DCT-domain blind measurement and reduction of blocking artifacts
Shizhong Liu,Alan C. Bovik +1 more
TL;DR: The experimental results show that the proposed method of measuring blocking artifacts is effective and stable across a wide variety of images, and the proposed blocking-artifact reduction method exhibits satisfactory performance as compared to other post-processing techniques.
Related Papers (5)
Performance, Analysis of Filtering Schedule Using Deblocking Filter for the Reduction of Block Artifacts from MPEQ Compressed Document Images
M. Anto Bennet,I. Jacob Raglend +1 more