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2014
In the processing flow of the hybrid video coding scheme, in-loop filtering is applied after prediction and reconstruction of the coding blocks. The filtered reconstructed picture is stored in the decoded picture buffer for output and for prediction if indicated. In HEVC, two consecutive in-loop filters are specified.
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In the processing flow of the hybrid video coding scheme, in-loop filtering is applied after prediction and reconstruction of the coding blocks. The filtered reconstructed picture is stored in the decoded picture buffer for output and for prediction if indicated. In HEVC, two consecutive in-loop filters are specified.
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Investigation of Wiener filter techniques for in-loop filtering in video coding
2023The demand for image and video content has increased rapidly over the past decades. In order to meet today’s transmission and storage constraints, efficient compression tools are needed which generate high coding gains. For the accomplishment of the last video coding standards such as H.265/HEVC and H.266/VVC, in-loop filters played an important role ...
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Adaptive guided image filter for improved in-loop filtering in video coding
2015 IEEE 17th International Workshop on Multimedia Signal Processing (MMSP), 2015This paper proposes a new adaptive sharpening filter based on guided image filter and improves HEVC's in-loop filter architecture by embedding sharpening filter between deblocking filter and SAO. The proposed algorithm classifies pixels of a frame into several groups according to uniform quantization of each pixel's Sum-Modified-Laplacian value and ...
Chen Chen +2 more
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Programmable 28nm coprocessor for HEVC/H.265 in-loop filters
2016 IEEE International Symposium on Circuits and Systems (ISCAS), 2016High Efficiency Video Coding (HEVC) in-loop filtering includes the deblocking filter (DF) and the sample adaptive offset filter which consume about 20% of the total HEVC de coding time. In this paper a very energy efficient programmable multicore coprocessor for HEVC in-loop filtering is proposed. The coprosessor is placed and routed using leading edge
Silvén Olli +2 more
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Optimized Non-local In-Loop Filter for Video Coding
2018 Picture Coding Symposium (PCS), 2018In order to compensate the shortcomings of existing in-loop filters only based on local correlation in video coding standards, many non-local based loop filters with high coding performance and computational complexity are proposed. In this paper, we propose a fast block matching algorithm, adaptive two-step block matching algorithm, based on our ...
Xuewei Meng +4 more
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In-loop deblocking filter for block based video coding
6th International Conference on Signal Processing, 2002., 2002Blocking artifacts are inherent and inevitable phenomena at low bit rates in current block-based video coding schemes. The paper proposes a deblocking technique to reduce blocking artifacts and improve visual quality. Different from the post-processing technique adopted in MPEG-4, the proposed technique is directly applied to the reference image for ...
null Xiaoyan Sun +3 more
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HEVC in-loop filters GPU parallelization in embedded systems
2015 International Conference on Embedded Computer Systems: Architectures, Modeling, and Simulation (SAMOS), 2015The added encoding efficiency and visual quality that is offered by the latest HEVC standard is mostly attained at the cost of a significant increase of the computational complexity at both the encoder and decoder. However, such added complexity greatly compromises the implementation of this standard in computational and energy constrained devices ...
Diego F. de Souza +3 more
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Deep Learning Based In-Loop Filter for Video Coding
2019 IEEE Visual Communications and Image Processing (VCIP), 2019In lossy video coding, in-loop filter can improve the image reconstruction by reducing compression artifacts and distortions. Recently, several CNN-based in-loop filtering algorithms are proposed to improve HEVC. However, something deficient is still limiting their capability to further boost the coding efficiency.
Yue Yu +4 more
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Parallel In-Loop Filtering in HEVC Encoder on GPU
IEEE Transactions on Consumer Electronics, 2018In-loop filtering is an important part of high efficiency video coding (HEVC), which consists of deblocking filter and sample adaptive offset (SAO) filter. It can not only improve the compression efficiency of HEVC, but also improve the visual quality of the reconstructed videos significantly.
Yang Wang +5 more
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Hermite Interpolation in Loop Groups and Conjugate Quadrature Filter Approximation
Acta Applicandae Mathematicae, 2004The classical Weierstrass approximation theorem states that any continuous real valued function on a compact subset of the real numbers can be uniformly approximated by a polynomial function. This result extends to functions on a compact subset of the real numbers having values in a convex subset of a finite dimensional vector space over \(\mathbf R ...
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