Scalable video coding based on db2 lifting wavelet by ZHAO Zhi-jie, LIN Mao-liu, CAO Zhi-min, LIU Zeng-yu

Subjects: “…scalable video coding…”
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Scalable video coding algorithm based on 3D hybrid tree and visual characteristics by Ming-zhe FU, Xiang-hai WANG, Chuan-ming SONG

“…The distribution characteristic of three-dimensional wavelet coefficients of video data was ana ed,and a scalable video coding algorithm was subsequently addressed based on hybrid three-dimensional tree and human visual system (HVS) characteristics.First,the hybrid tree structure was adaptively determined according to the auto-correlation of low-pass and high-pass coefficients.It reduced obviously the number of ion bits locating significant wavelet coefficients when scanning and processing low-pass and high-pass coefficients in temporal dimension.Second,each wavelet coefficient was weighted in terms of HVS sensitivity to its corresponding subband.Significant coefficients thus tended to be coded with high priority and arranged at the front of bitstream,and the reconstructed video quality was improved at low and medium bitrates to a great extent.Experimental results in terms of peak signal-to-noise ratio (PSNR) verified the effectiveness of the proposed algorithm on several test videos with varying characteristics.0.65dB,1.75dB,and 1.77dB higher PSNR are gained than asymmetric 3-D orientation tree for Y,U,and V components,respectively.Moreover,0.23dB,2.11dB,and 1.72dB higher PSNR are reached than single temporal-spatial orientation tree separately for Y,U,and V components.Besides,better subjective quality is obtained through effectively attenuating ringing artifact.…”
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Wyner-Ziv spatial scalable video coding using compressive sensing in ubiquitous networks by GAN Zong-liang, QI Li-na, TANG Gui-jin, ZHU Xiu-chang

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A Rate-Distortion Optimized Coding Method for Region of Interest in Scalable Video Coding by Hongtao Wang, Dong Zhang, Houqiang Li

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UAV service enhancement mechanism deep deterministic policy gradient for scalable video coding transmission by Junjie YAN, Yaxin ZHU, Yanru FENG, Hanyong LIU, Junyi DENG, Huan WANG

“…Unmanned aerial vehicles (UAV) are an important component of future air-space-ground integrated network due to their onboard storage, communication, and computing capabilities.However, existing research on UAV-assisted edge networks often focuses more on the network perspective and lacks consideration of user perspectives and their requirements.Therefore, a UAV service enhancement mechanism based on deep deterministic policy gradient (DDPG) for scalable video coding (SVC) transmission was proposed from the user’s perspective.Firstly, an elastic video transmission method based on SVC was proposed in conjunction with UAV to improve differentiated user experiences.Secondly, a UAV trajectory planning design based on the DDPG algorithm was proposed to maximize the number of users receiving enhanced layer videos and ensure effective coverage enhancement by UAV in hotspot areas.Simulation results show that compared with both the deep Q network (DQN) algorithm and shortest path (SP) algorithm under different user distributions, the proposed algorithm can increase the average number of enhanced layers received by 47.9% and 76.4%, respectively.This study successfully achieves improved coverage in hotspot areas while also providing differentiated user experiences through its proposed methods.…”
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Optimal transmission for scalable video coded streaming in cellular wireless networks with the cooperation of local peer-to-peer network by Guangsheng Feng, Junyu Lin, Qian Zhao, Huiqiang Wang, Hongwu Lv, Bingyang Li, DongDong Su

“…We study the problem of transmitting scalable video coded streams in a hybrid scenario including a global cellular network and a local peer-to-peer network. …”
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Delay adaptive transmission method for scalable video streaming based on OpenFlow by Tao HUANG, Li ZHANG, Yun-yong ZHANG, Yun-jie LIU

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Inter layer up-sampling filtering scheme applied in SVC by WANG Zhang1, LIU Jian2, YAN Guo-ping2

Subjects: “…scalable video coding…”
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QoE-aware video distribution mechanism in FiWi by Ruyan WANG, Yan YANG, Dapeng WU

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Secure network coding scheme for scalable video streaming by Xi-meng LIU, Guang-jun LIU, Jian-feng MA, Jin-bo XIONG

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Fast inter prediction algorithm applied in quality SVC by WANG Da-yong1, SHU Jian2

“…Based on the characteristics of quality scalable video coding,a fast inter encoding algorithm was proposed on the enhancement layer for the medium-grain quality scalability（MGS）.Firstly,based on the base layer macroblock mode and rate-distortion,the order of the coding mode for the current macro block was proposed.Then based on the encode structure,the correlation between layers,and the spatial correlation,desicions for the Direct coding mode,layer mode,and adjacent mode were proposed,respectively.Finally,the macroblocks were encoded in the order predicted,with the proposed three decisions to improve on the coding speed by early termination.The experimental results show that the computational complexity of the algorithm is reduced by 68% on the average compared to that of the standard method,with only negligible coding loss and bit-rate increase.…”
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Adaptive Streaming of Scalable Videos over P2PTV by Youssef Lahbabi, El Hassan Ibn Elhaj, Ahmed Hammouch

“…In this paper, we propose a new Scalable Video Coding (SVC) quality-adaptive peer-to-peer television (P2PTV) system executed at the peers and at the network. …”
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H.264 SVC Complexity Reduction Based on Likelihood Mode Decision by L. Balaji, K. K. Thyagharajan

“…H.264 Advanced Video Coding (AVC) was prolonged to Scalable Video Coding (SVC). SVC executes in different electronics gadgets such as personal computer, HDTV, SDTV, IPTV, and full-HDTV in which user demands various scaling of the same content. …”
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Optimal Resource Allocation and VCG Auction-Based Pricing for H.264 Scalable Video Quality Maximization in 4G Wireless Systems by Shreyans Parakh, Aditya K. Jagannatham

“…We present novel schemes for optimal OFDMA bitrate allocation towards video quality maximization in H.264 scalable video coding (SVC)-based 4G wireless systems. We use the rate and quality models for video characterization of the SVC extension of the H.264/AVC and develop the framework for optimal scalable video transmission. …”
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Spatial Multiple Description Coding for Scalable Video Streams by Roya Choupani, Stephan Wong, Mehmet Tolun

“…A combination of multiple description coding in pixel domain and scalable video coding schemes which addresses both video adaptation and robustness to data loss is proposed in this paper. …”
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