Showing 1-25 of 32,916 resultsfor "Index Terms":Coding Unit
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This Standard defines the storage file formats and RTP pay load formats for P1857 Video and P1857.2 Audio. The storage of video and audio not only uses the existing capabilities of the ISO Base Media File Format, but also defines extensions to support specific features of the P1857 Video codec and P1857.2 Audio codec. The target applications and services include but not limited to Internet media s...Show More
A set of high-efficiency video coding tools, including intra prediction, inter prediction, transform, entropy coding and loop filter, and corresponding decoding procedure, is defined in this standard. The target applications and services include, but are not limited to, digital television broadcasting, IPTV, video surveillance, video conference, Internet video streaming, and other video/audio-enab...Show More
A set of high-efficiency video coding tools, including intra prediction, inter prediction, transform, entropy coding and loop filter, and corresponding decoding procedure, is defined in this standard. The target applications and services include, but are not limited to, digital television broadcasting, IPTV, video surveillance, video conference, Internet video streaming, and other video/audio-enab...Show More
Texture-based fast CU size decision algorithm for HEVC intra coding
2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)
Year: 2016 | Conference Paper |
Cited by: Papers (11)
This paper proposes the texture-based coding unit (CU) size decision (TBCUD) algorithm that includes texture-based block partitioning. While the existing algorithm calculates every CU size, the proposed algorithm only considers the determined CU sizes that are decided by the texture of the image. Because the prediction is performed by the prediction unit (PU) derived from CU, the proposed algorith...Show More
Convolutional Codes in Rank Metric With Application to Random Network Coding
Random network coding recently attracts attention as a technique to disseminate information in a network. This paper considers a noncoherent multishot network, where the unknown and time-variant network is used several times. In order to create dependence between the different shots, particular convolutional codes in rank metric are used. These codes are so-called (partial) unit memory ((P)UM) cod...Show More
The Performance of Multithreshold Decoders in Concatenated Schemes Over Erasure Channels
2019 8th Mediterranean Conference on Embedded Computing (MECO)
Year: 2019 | Conference Paper |
Multithreshold decoders (MTD) of self-orthogonal codes (SOC) for erasure channels implementing error correction methods based on searching global extremum of functions in discrete spaces are considered. To increase the efficiency of erasure recoveries the concatenated codes comprising inner SOC and outer codes being simple for decoding such as parity-check codes, Hamming codes or BCH codes are off...Show More
On the MC/DC Code Coverage of Vulkan SC GPU Code
Jaime Luis Martin Aleman;Antonio Agenjo;Sergio Carretero;Leonidas Kosmidis
2022 IEEE/AIAA 41st Digital Avionics Systems Conference (DASC)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
Next generation avionics systems require high performance, which can be provided by graphics processing units (GPUs). The newly introduced API Vulkan SC, enables the development of safety critical GPU software with complex control flow, whose certification is subject to DO-178C certifiability objectives, such as MC/DC code coverage.In this paper we explain for the first time how MC/DC coverage can...Show More
A Fast CU Size Decision Algorithm for HEVC
High Efficiency Video Coding (HEVC) employs a coding unit (CU), prediction unit (PU), and transform unit (TU) based on the quadtree coding tree unit (CTU) structure to improve coding efficiency. However, the computational complexity increases greatly because the rate-distortion (RD) optimization process should be performed for all CUs, PUs, and TUs to obtain the optimal CTU partition. In this pape...Show More
A Fast CU Size Decision Algorithm for the HEVC Intra Encoder
Intra coding plays a crucial role in the High Efficiency Video Coding (HEVC) standard. It provides the higher coding efficiency than the previous standard, H.264/Advanced Video Coding. The block partitioning in HEVC supports quad-tree-based coding unit (CU) structure from size 64×64 to 8×8. The new technique provides better performances on one hand, whereas on the other hand it also increases the ...Show More
Partial Unit Memory codes based on Gabidulin codes
Antonia Wachter;Vladimir Sidorenko;Martin Bossert;Victor Zyablov
2011 IEEE International Symposium on Information Theory Proceedings
Year: 2011 | Conference Paper |
Cited by: Papers (6)
(Partial) Unit Memory ((P)UM) codes provide a powerful possibility to construct convolutional codes based on block codes in order to achieve a high decoding performance. In this contribution, a construction based on Gabidulin codes is considered. This construction requires a modified rank metric, the so-called sum rank metric. For the sum rank metric, the free rank distance, the extended row rank ...Show More
Execution-time optimization based on thread and block repartitions on a graphic processing unit
Randa Khemiri;Fatma Ezahra Sayadi;Haythem Bahri;Marwa Chouchene;Mohamed Atri
2017 International Conference on Engineering & MIS (ICEMIS)
Year: 2017 | Conference Paper |
Cited by: Papers (1)
With the rapid development of multimedia technologies and network communication, the parallel architecture such as the Graphic Processing Unit (GPU) is introduced in high-performance computing. But, how to program this GPU and how to obtain the best execution time remains usually an art. In this paper, a search study is performed on the Thread and the Block number that leads to a Prediction Unit o...Show More
A highly parallel coding unit size selection for HEVC
Liron Anavi;Avi Giterman;Maya Fainshtein;Vladi Solomon;Yair Moshe
2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Year: 2016 | Conference Paper |
The High Efficiency Video Coding (HEVC) standard provides a substantial improvement in coding efficiency over previous video coding standards at the cost of a higher computational complexity. HEVC employs a quadtree based image structure by partitioning the image into coding units (CUs). Finding the optimal CU size in terms of rate-distortion is one of the most computationally challenging parts of...Show More
Efficient Intra Coding through Hierarchical CU Partition Prediction for VVC
2023 IEEE International Conference on Visual Communications and Image Processing (VCIP)
Year: 2023 | Conference Paper |
Versatile Video Coding (VVC) has adopted a quad-tree with a nested multi-type tree (QTMT) partition structure to improve the rate-distortion (RD) performance, but this greatly increases complexity due to the brute-force RDO process to search for the best partition type. Some methods cannot fully utilize partition information of deeper CUs when training, while others process large CUs as a whole an...Show More
Utilize Neighboring LCU Depth Information to speedup FVC/H.266 Intra Coding
2019 International Conference on System Science and Engineering (ICSSE)
Year: 2019 | Conference Paper |
Cited by: Papers (6)
With the advance of the 5th generation (5G) wireless system technology, the JVET started to develop a FVC (Future Video Coding) standard for the ultra-high definition video (UHDV) since 2016. We study how to speed up the H.266 coding without degrading the coding quality. The FVC/H.266 adopts QuadTree plus Binary Tree (QTBT) structure for Coding Units (CU). We proposed to reference the average dept...Show More
High Throughput Software Multithreshold Decoder on GPU
V. Zolotarev;G. Ovechkin;P. Ovechkin;D. Satybaldina;N. Tashatov;D. Sankibayev
2016 Third International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)
Year: 2016 | Conference Paper |
Cited by: Papers (3)
Multithreshold decoder (MTD) is the simplest type of majority decoder that decodes self-orthogonal codes. Low computational complexity and simple decoding hardware implementation of multithreshold decoders allow using them in high speed communication systems and data storage systems that require decoding information at speeds above 1 Gbit/s. A high-speed software binary multithreshold decoder usin...Show More
Distributed video coding (DVC) has a great development during the past decade for its simpler encoder and higher robustness against the channel noises. However, typical DVC schemes, such as DISCOVER, are almost based on the feedback channel between the encoder and the decoder, and the decoding process is very complex, which causes difficulty in feedback-free or tight delay constraint video applica...Show More
Performance analysis of various FEC codes for wireless communication
Second International Conference on Current Trends In Engineering and Technology - ICCTET 2014
Year: 2014 | Conference Paper |
Cited by: Papers (2)
Forward Error Correction code (FEC) is important for Wireless Communication and Cryptography applications to perform the Error Detection and Correction (EDC) mechanisms. FEC codes are classified into two types such as Convolutional code and Block code. Various FEC codes can be used in Wireless Communication likes Viterbi code, Reed Solomon code, Golay, BCH, Multidimensional parity, Hamming code an...Show More
A class of turbo-like LDPC codes and their decoding based on neural network
2005 IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications
Year: 2005 | Conference Paper |
Cited by: Patents (2)
Turbo codes and LDPC codes are both superior to other error correcting codes. These two families of codes have some similarities. It seems a good idea to design new codes combining these two codes. Through the analysis of turbo codes, we can consider turbo codes as block codes and find their matrix H. In this paper, we give a new class of turbo-like LDPC codes combining the advantages of turbo and...Show More
Predictive Coding Using Local Decoded Images with Different Degrees of Blurring
2023 IEEE 13th International Conference on Consumer Electronics - Berlin (ICCE-Berlin)
Year: 2023 | Conference Paper |
When the same object, both within a single picture and between pictures in a video sequence, exhibits varying degrees of blurring, coding efficiency is likely to be reduced due to a decrease in the accuracy of intra- and inter-picture predictions. To improve the coding efficiency in this case, we propose a method to perform such predictions using sharpened and blurred images in addition to convent...Show More
A set of high-efficiency video coding tools, including intra prediction, inter prediction, transform, entropy coding and loop filter, and corresponding decoding procedure, is defined in this standard. The target applications and services include, but are not limited to, digital television broadcasting, IPTV, video surveillance, video conference, Internet video streaming, and other video/audio-enab...Show More
Study on the coding efficiency impacts using larger intra prediction unit size than HEVC
2015 IEEE 4th Global Conference on Consumer Electronics (GCCE)
Year: 2015 | Conference Paper |
This paper presents the coding efficiency impacts using larger intra prediction unit size (PU extension) than HEVC, which is implemented on the HEVC reference software HM-16.4. It is reported that the PU extension up to 128×128 can achieve 0.07 % and 0.19 % on average for normal QPs (QP=22, 27, 32, 37) and high QPs (QP=32, 37, 42, 47) respectively in all intra configuration. The amount of gain by ...Show More
Rank metric convolutional codes for Random Linear Network Coding
2012 International Symposium on Network Coding (NetCod)
Year: 2012 | Conference Paper |
Cited by: Papers (15)
Random Linear Network Coding (RLNC) currently attracts a lot of attention as a technique to disseminate information in a network. In this contribution, non-coherent multi-shot RLNC is considered, that means, the unknown and time variant network is used several times. In order to create dependencies between the different shots, convolutional network codes are used, in particular Partial Unit Memory...Show More
A fast SAO algorithm based on coding unit partition for HEVC
2015 6th IEEE International Conference on Software Engineering and Service Science (ICSESS)
Year: 2015 | Conference Paper |
Cited by: Papers (4)
Sample adaptive offset (SAO) filter algorithm is introduced by HEVC as a completely new stage to improve video quality. It is located after deblocking filter, adding an offset value to each sample based on the reconstructed data and the original YUV. In order to solve the problem of high computational complexity of SAO, a fast S AO algorithm based on coding unit partition is proposed in this paper...Show More
A GPU implementation of belief propagation decoder for polar codes
2012 Conference Record of the Forty Sixth Asilomar Conference on Signals, Systems and Computers (ASILOMAR)
Year: 2012 | Conference Paper |
We present a Graphics Processing Unit (GPU) implementation of a Belief Propagation (BP) based decoder for polar codes. The BP decoding algorithm is implemented to utilize the parallel computing capability of the GPUs. We show how the algorithm can make use of parallelism both at the thread level and block level, and by utilizing the limited shared memory available on GPUs, a real time decoding per...Show More
In versatile video coding (VVC), the quadtree with nested multi-type tree (QTMT) partition module significantly improves encoding performance compared to other coding tools. However, it also introduces notable computational complexity in intra-frame coding, occupying over 90% of the encoding time. This letter presents a fast coding unit (CU) partition method based on texture complexity to achieve ...Show More
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