Rate Control Scheme based on Cauchy R-D Optimization Model for H.264/AVC under Low Delay Constraint

Eiamjumrus, Nongluk; Aramvith, Supavadee
April 2008
Journal of Digital Information Management;Apr2008, Vol. 6 Issue 2, p180
Academic Journal
The motivation of this work is based on the observation that Cauchy distribution provides more accurate estimates of rate and distortion characteristics of video sequences than the previously used distribution such as Laplacian distribution. In this paper, we propose a new rate control scheme for H.264 low-delay video transmission using Cauchy rate-distortion optimization model. Our proposed method uses the Lagrange Multiplier technique to optimize the cost function, and be able to find the rate and distortion model subject to the target bit rate constraint resulting in the optimum choice of quantization step sizes. Model parameters are estimated using statistical linear regression analysis. The target number of bits for each frame is determined according to their buffer status, the number of bits use in the previous frame, and basic unit complexity. The proposed scheme has been implemented on H.264 video coder. Simulation results show that the proposed rate control algorithm achieves, on the average, an improvement in PSNR for up to 1.68dB with lesser number of frames skipped as compared with the default H.264 JM8.6 rate control scheme.


Related Articles

  • Optimal Two-Pass Frame-Layer Bit Allocation for H.264 Video. Do-Kyoung Kwon; Mei-Yin Shen; C.-C. Jay Kuo // Journal of Digital Information Management;Apr2008, Vol. 6 Issue 2, p174 

    In this work, the frame-layer bit allocation problem is studied for H.264 video. We first impose a GOP (Group of Pictures) structure on the underlying H.264 video, and then develop a two-pass rate control algorithm based on the Lagrange optimization framework. The proposed algorithm estimates...

  • OPTIMIZING WEB SERVER'S DATA TRANSFER WITH HOTLINKS. Kranakis, Evangelos; Krizanc, Danny; Martin, Miguel Vargas // Proceedings of the IADIS International Conference on WWW/Interne;Nov2003, p341 

    We study the optimization of the expected number of bytes that must be transferred by a Web server when a user visits one of its pages. Given a Web site, we want to find an assignment of hotlinks (shortcuts) that minimizes the expected data transfer, i.e., the average amount of bytes to be...

  • Tamil Speech Recognition Using Hybrid Technique of EWTLBO and HMM. Chandra, E.; Sujiya, S. // International Journal of Computer Science & Information Technolo;2014, Vol. 5 Issue 5, p6664 

    Speech Recognition technology is one of the fast growing engineering technologies. The task of speech recognition is to convert speech into a sequence of words by a computer program. As the most natural communication modality for humans, the ultimate dream of speech recognition is to enable...

  • Video summarization using a network of radial basis functions. Ejaz, Naveed; Baik, Sung // Multimedia Systems;Nov2012, Vol. 18 Issue 6, p483 

    The exponential increase of video data on the internet demands efficient management schemes for storage, retrieval, and indexing. One of the methods for managing this huge volume of video data is video summarization. Video summarization is a method to generate smart versions of the videos for...

  • Video Distribution Systems for Interactive Collaboration. Fei Su; Stødle, Daniel; Ha, Phuong Hoai; Bjørndalen, John Markus; Anshus, Otto // Norsk Informatikkonferanse;2011, Issue 21-23, p247 

    It is difficult to distribute videos and achieve user interaction between actors and musicians in geographically distant locations. Central problems include latency, synchronization and bandwidth usage. This paper presents work in progress on evaluating current video distribution systems and...

  • Editorial. Hager, William W. // Computational Optimization & Applications;Nov2005, Vol. 32 Issue 3, p5 

    The article highlights the "Conference on Multi-scale Optimization Methods and Applications" hosted by the Center for Applied Optimization on February 26 -28, 2004 at the University of Florida in California. The focus of the conference was on the development of new solution methodologies. Among...

  • OFFSET/FETCH, Part I. Ben-Gan, Itzik // SQL Server Magazine;Mar2011, Vol. 13 Issue 3, p20 

    The article discusses the features and basic information on a new filter from Microsoft SQL Server Denali called OFFSET/FETCH which can filter a requested range of rows based on given ordering, a number of rows to skip, and several rows to return. It explains the optimization of SQL Server, the...

  • Riverbed RiOS 5.0.  // Software World;Mar2008, Vol. 39 Issue 2, p22 

    The article reports on the introduction of version 5.0 of the Riverbed Optimisation System (RiOS™) by Riverbed Technology, Inc. It mentions that RiOS™ powers Riverbed® Steelhead® product line. It discusses that RiOS 5.0 extends Riverbed lead in delivering to its customers the...

  • Extending Coverage of High Definition TV Services over ADSL2 with Optimized Reception Quality using H.264/AVC Transrating. Bacquet-Descamps, Anne-Sophie; Corlay, Patrick; François-Xavier Coudoux; Deknudt, Christophe; Gharbi, Mohamed // Journal of Communications Software & Systems;Sep2012, Vol. 8 Issue 3, p68 

    In this paper, we present a new Joint Source-Channel Coding (JSCC) architecture to extend the coverage of H.264/AVC High Definition (HD) video delivery over Digital Subscriber Line (DSL). The proposed solution combines low complexity H.264/AVC transrating as well as multi-carrier transmission...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics