Patent
De-blocking filtering control
TLDR
In this article, a first filter decision value is calculated for a block (10) of pixels (11, 13, 15, 17) in a video frame based on pixel values of pixels(21, 23, 25, 27, 27), in a corresponding first line (22), where pixels (21,23, 25 and 27) are in a neighboring block (20) in the video frame.Abstract:
A first filter decision value is calculated for a block (10) of pixels (11, 13, 15, 17) in a video frame based on pixel values of pixels (11, 13, 15) in a first line (12) of pixels (11, 13, 15, 17) in the block (10) A second filter decision value is also calculated for the block (10) based on pixel values of pixels (21, 23, 25, 27) in a corresponding first line (22) of pixels (21, 23, 25, 27) in a neighboring block (20) in the video frame The first filter decision value is used to determine how many pixels in a line (12) of pixels (11, 13, 15, 17) in the block (10) to filter relative to a block boundary (1) between the block (10) and the neighboring block (20) The second filter decision value is used to determine how many pixels in a corresponding line (22) of pixels (21, 23, 25, 27) in the neighboring block to filter relative to the block boundary (1)read more
Citations
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Patent
Image processing device and method
TL;DR: In this paper, an image processing device and a method that make it possible to suppress block noise is presented, which can be applied to an image processor and can be used to suppress noise in a filter process determination unit.
Patent
Image processing device, and image processing method
Peng Wang,Kazushi Sato +1 more
TL;DR: In this article, the shape (square or non-square) of a block in a prediction unit is determined by using shape determining information for determining the shape of the block in accordance with the size of the blocks.
Patent
Encoder, decoder, encoding method, and decoding method
TL;DR: In this paper, the conversion table is selected from a plurality of tables including two or more tables which differ from each other in difference between a longest bit length and a shortest bit length.
Patent
Line memory reduction for video coding and decoding
TL;DR: In this paper, the adaptive loop filtering of a deblocked pixel may then apply the filter taps to already deblocked pixels and/or undeblocked pixels in accordance with the determination of the input signal.
Patent
Determining boundary strength values for deblocking filtering for video coding
TL;DR: In this paper, a video coder associates a first boundary strength value with an edge in response to determining that a first video block or a second video block is associated with an intra-predicted coding unit.
References
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Journal ArticleDOI
Adaptive deblocking filter
TL;DR: The adaptive deblocking filter used in the H.264/MPEG-4 AVC video coding standard performs simple operations to detect and analyze artifacts on coded block boundaries and attenuates those by applying a selected filter.
Journal ArticleDOI
HEVC Deblocking Filter
Andrey Norkin,Gisle Bjontegaard,Arild Fuldseth,Matthias Narroschke,Masaru Ikeda,Kenneth Andersson,Minhua Zhou,G. Van der Auwera +7 more
TL;DR: The in-loop deblocking filter used in the upcoming HEVC standard to reduce visible artifacts at block boundaries has lower computational complexity and better parallel processing capabilities while still achieving significant reduction of the visual artifacts.
Patent
Low-complexity deblocking filter
TL;DR: In this article, a method of filtering to remove coding artifacts introduced at block edges in a block-based video coder is proposed, the method having the steps of checking the content activity on every line of samples belonging to a boundary to be filtered and where content activity is based on a set of adaptively selected thresholds determined using Variable-Shift Table Indexing (VSTI).
Patent
Spatial extrapolation of pixel values in intraframe video coding and decoding
TL;DR: In this article, techniques and tools for spatial extrapolation of pixel values in intraframe video encoding and decoding are described, where the pixel values of pixels in a causal neighborhood for the block of pixels are estimated.
Journal ArticleDOI
High Performance, Low Complexity Video Coding and the Emerging HEVC Standard
Kemal Ugur,Kenneth Andersson,Arild Fuldseth,Gisle Bjontegaard,Lars Petter Endresen,Jani Lainema,Antti Hallapuro,Justin Ridge,Dmytro Rusanovskyy,Cixun Zhang,Andrey Norkin,Clinton Priddle,Thomas Rusert,Jonatan Samuelsson,Rickard Sjöberg,Zhuangfei Wu +15 more
TL;DR: Coding efficiency improvements are achieved with lower complexity than the H.264/AVC Baseline Profile, particularly suiting the proposal for high resolution, high quality applications in resource-constrained environments.