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EFFICIENT MODE SELECTION ALGORITHM USING IMAGE DISTORTION FOR H.264 VIDEO ENCODER

Manoranjan Paul, Michael Frater, John Arnold
2006 2006 8th international Conference on Signal Processing  
Many video compression algorithms require decisions to be made to select between different coding modes.  ...  It has been proposed that constrained optimization techniques, such as the method of Lagrange multipliers, can be used to trade off between the quality of the compressed video and the bit rate generated  ...  If just the minimization of the distortion is considered for the decision of the coding tools, the achieved distortion is small but the required bit rate may be high.  ... 
doi:10.1109/icosp.2006.345638 fatcat:mon5tw5pzjc25bd6fwhkw6xxue

Review of Fast Mode Decision Algorithms for Intra Prediction in High Efficiency Video Coding Standard

Umesh Kaware, Sanjay Gulhane
2017 IRA-International Journal of Technology & Engineering (ISSN 2455-4480)  
The best mode is selected by Rate Distortion Optimization (RDO) process. It achieves significant improvement in coding efficiency compared with previous standards.  ...  The emerging High Efficiency Video Coding (HEVC) standard is a new improved next generation video coding standard.  ...  Gao et. al.in [20] proposed two fast intra prediction algorithms to reduce the number of candidate modes for rate distortion optimization by obtaining an optimal adjacent modes (OAM) list consisting  ... 
doi:10.21013/jte.icsesd201733 fatcat:4vebuljfzzeghp6ceuexcarycu

New Temporal Filtering Scheme to Reduce Delay in Wavelet-Based Video Coding

V. Seran, L.P. Kondi
2007 IEEE Transactions on Image Processing  
Wavelet-based motion-compensated temporal filtering provides the most powerful scheme for scalable video coding and provides high-compression efficiency that competes with the current state of art codecs  ...  Index Terms-Motion-compensated temporal filtering, waveletbased video coding.  ...  Rate Control Algorithm In this paper, a simple search algorithm is used to decide the rates to meet the optimal distortion criteria given in (14) .  ... 
doi:10.1109/tip.2007.909316 pmid:18092592 fatcat:ahs37xriwbdipfmtv33jdzlmae

A Survey of Energy-Efficient Compression and Communication Techniques for Multimedia in Resource Constrained Systems

Tao Ma, Michael Hempel, Dongming Peng, Hamid Sharif
2013 IEEE Communications Surveys and Tutorials  
Among different factors concerned, energy efficiency is one of the most challenging issues in multimedia communication due to the resource constraints, and the requirements for high bandwidth and low transmission  ...  In the first group, we introduce the state-of-the-art compression algorithms and perform analyses and evaluations on energy efficiency in applying these compression algorithms to resource-constrained multimedia  ...  The quantization step size can be adjusted by the rate-control mechanism. Also each code block bit stream is truncated in an optimal way to minimize distortion due to bit-rate constraints.  ... 
doi:10.1109/surv.2012.060912.00149 fatcat:3qtgaqnygvc6laywqizot7xyea

An Efficient Mode Selection Prior to the Actual Encoding for H.264/AVC Encoder

M. Paul, M.R. Frater, J.F. Arnold
2009 IEEE transactions on multimedia  
Many video compression algorithms require decisions to be made to select between different coding modes.  ...  It has been proposed that constrained optimization techniques, such as the method of Lagrange multipliers, can be used to trade off between the quality of the compressed video and the bit rate generated  ...  Mode selection is the most important coding option which controls the rate-distortion efficiency in the recent video coding standard H.264/AVC.  ... 
doi:10.1109/tmm.2009.2017610 fatcat:oce727uuarc5pme2kkie6w5b5u

Robust Transmission of H.264/AVC Video using Adaptive Slice Grouping and Unequal Error Protection

N. Thomos, S. Argyropoulos, N. Boulgouris, M. Strintzis
2006 2006 IEEE International Conference on Multimedia and Expo  
The optimal classification of macroblocks into slice groups and the optimal channel rate allocation are achieved by iterating two interdependent steps.  ...  We present a novel scheme for the transmission of H.264/AVC video streams over lossy packet networks.  ...  If a classification with lower expected distortion exists, it is considered as optimal and steps 2 to 6 are repeated, else the algorithm is terminated.  ... 
doi:10.1109/icme.2006.262478 dblp:conf/icmcs/ThomosABS06 fatcat:edqkmeiunnbczkstxcwibtstw4

Rate control algorithm for pixel-domain Wyner-Ziv video coding

Antoni Roca, Marleen Morbée, Josep Prades-Nebot, Edward J. Delp, William A. Pearlman, John W. Woods, Ligang Lu
2008 Visual Communications and Image Processing 2008  
Video coding algorithms provide coding modes and parameters so that encoders can fulfill rate constraints and improve the coding efficiency.  ...  Our algorithm predicts the rate and distortion of each video frame as a function of the coding mode and the quantization parameter.  ...  RATE CONTROL ALGORITHM Video coding algorithms provide coding modes and parameters that allow coders to obtain a high coding efficiency and to fulfill the coding constraints (in quality, rate, and delay  ... 
doi:10.1117/12.768970 fatcat:vfqh5mbmtngf5ayocbomwvjox4

Adaptive Downsampling for High-Definition Video Coding

Jie Dong, Yan Ye
2014 IEEE transactions on circuits and systems for video technology (Print)  
This paper proposes a practical algorithm to find the optimal downsampling ratio that balances the distortions caused by downsampling and coding, thus achieving the overall optimal R-D performance.  ...  Simulations show this algorithm improves the R-D performance over a wide range of bit rates, e.g., from 1.0 dB at high bit rates to 2.5 dB at low bit rates.  ...  Simulations show the proposed ADS algorithm improves the coding efficiency over a wide range of bit rates, i.e., from 1.0 dB at high bit rates to 2.5 dB at low bit rates.  ... 
doi:10.1109/tcsvt.2013.2278146 fatcat:dzgknrakunh7jioulujfxdv65m

Adaptive joint source-channel coding using rate shaping

Trista Pei-chun Chen, Tsuhan Chen
2002 IEEE International Conference on Acoustics Speech and Signal Processing  
condition, in order to achieve the optimal rate-distortion performance.  ...  The high error rate of the channel should be considered as well, so channel coding is often applied.  ...  In Section 3, we introduce the proposed rate-distortion optimized rate shaping, with illustration of the discrete rate-distortion combination algorithm, and with the experiment showing the performance  ... 
doi:10.1109/icassp.2002.5745020 dblp:conf/icassp/ChenC02 fatcat:jqwfyorrmva65fjl6qlsrgze5u

Adaptive joint source-channel coding using rate shaping

Trista Pei-chun Chen, Tsuhan Chen
2002 IEEE International Conference on Acoustics Speech and Signal Processing  
condition, in order to achieve the optimal rate-distortion performance.  ...  The high error rate of the channel should be considered as well, so channel coding is often applied.  ...  In Section 3, we introduce the proposed rate-distortion optimized rate shaping, with illustration of the discrete rate-distortion combination algorithm, and with the experiment showing the performance  ... 
doi:10.1109/icassp.2002.1006160 fatcat:x2f4apbw7ja6foiqqnlhq6xzc4

Lagrange multiplier based perceptual optimization for high efficiency video coding

Shanshe Wang, Siwei Ma, Debin Zhao, Wen Gao
2014 Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific  
In this paper, a Lagrange multiplier based perceptual optimization scheme is proposed for high efficiency video coding (HEVC).  ...  Then the Lagrange multiplier is incorporated into the rate distortion optimization for mode decision.  ...  INTRODUCTION High Efficiency Video Coding (HEVC) [1] significantly improves the coding efficiency over the preceding standards, such as H.264/AVC [2] .  ... 
doi:10.1109/apsipa.2014.7041596 dblp:conf/apsipa/WangMZG14 fatcat:3t5ywx7vbrdpjaeyoedm5fryyi

Adaptive downsampling for high-definition video coding

Jie Dong, Yan Ye
2012 2012 19th IEEE International Conference on Image Processing  
This paper proposes a practical algorithm to find the optimal downsampling ratio that balances the distortions caused by downsampling and coding, thus achieving the overall optimal R-D performance.  ...  Simulations show this algorithm improves the R-D performance over a wide range of bit rates, e.g., from 1.0 dB at high bit rates to 2.5 dB at low bit rates.  ...  Simulations show the proposed ADS algorithm improves the coding efficiency over a wide range of bit rates, i.e., from 1.0 dB at high bit rates to 2.5 dB at low bit rates.  ... 
doi:10.1109/icip.2012.6467512 dblp:conf/icip/DongY12 fatcat:sifpv6qrubddlk6qmxqc6kb6g4

Improved Diamond Half-pel Hexagon Search Algorithm for Block-Matching Motion Estimation

Abdelrahman Abdelazim, Ahmed M. Hamza, Bassam Noaman, Djamel Ait-Boudaoud
2017 IS&T International Symposium on Electronic Imaging Science and Technology  
The paper presents an efficient algorithm that reduces the time complexity of video coding in the H.265/HEVC encoder, towards an implementation employable in real-time video coding and transmission applications  ...  The optimization targets the motion estimation search procedure, which occupies a large part of the compute time per Coding Unit.  ...  Low bit rate can be accomplished in video coding at the cost of reduced quality (high distortion).  ... 
doi:10.2352/issn.2470-1173.2017.2.vipc-407 fatcat:efteth666vbzpeiu4xdrzkvjxy

Recent advances in rate control for video coding

Zhenzhong Chen, King Ngi Ngan
2007 Signal processing. Image communication  
In this paper, we review the recent advances in rate control techniques for video coding. The rate control algorithms recommended in the video coding standards are briefly described and analyzed.  ...  The paper not only summarizes these recent rate control techniques but also provides explicit directions for future rate control algorithm design. r  ...  Acknowledgment This work is affiliated with the Microsoft-CUHK Joint Laboratory for Human-centric Computing and Interface Technologies.  ... 
doi:10.1016/j.image.2006.11.002 fatcat:cafowm3zsbbyfohkprxj44s5zu

MINMAX rate control with a perceived distortion metric

Yegnaswamy Sermadevi, Mark Masry, Sheila S. Hemami, Sethuraman Panchanathan, Bhaskaran Vasudev
2004 Visual Communications and Image Processing 2004  
This paper presents a Rate-Distortion based optimization procedure for video coding that explicitly incorporates a perceptual distortion measure.  ...  Lagrangian optimization is employed within each frame to assign macroblock-level quantization step-sizes that minimize this frame-level distortion.  ...  Efficient suboptimal algorithms for dependent coding can also be derived by incorporating an independent coding algorithm as part of an iterative procedure as in Refs. 3, 7, 11.  ... 
doi:10.1117/12.527254 dblp:conf/vcip/SermadeviMH04 fatcat:mrov3gm3ovdw7cfdjr7ffh4cwu
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