Dissertation > Excellent graduate degree dissertation topics show

Research and Otimization on Motion Estimation Algorithm Based on H.264/AVC

Author: HuangChao
Tutor: ChenHaiYan
School: Harbin University of Science and Technology
Course: Control Theory and Control Engineering
Keywords: H.264/avc motion estimation motion vector video compression
CLC: TN919.81
Type: Master's thesis
Year: 2010
Downloads: 131
Quote: 0
Read: Download Dissertation

Abstract


H.264/AVC is the video coding standard jointly developed by ITU-TVideo Coding Experts Group(VCEG)and ISO/IEC Moving Picture Experts Group(MPEG). To compared with the previous coding standards, the most prominent feature of H.264 is high compression ratio, but also it has a good network of affinity, suitable for low-bandwidth, high-quality network video applications. Superior compression performance of H.264 is based on highly complex calculation. Motion estimation is one of the mainly technology for the video compression coding, in which the encoder calculation of the total amount of 60%~85%, and with the motion compensation technology they can eliminate time redundant of video signal to improve the coding efficiency. As a result, how to improve the efficiency of motion estimation to make the search process more robust, faster and more efficient becomes one of the hot spots of the current study.This paper first discusses the basic principles and key technologies of H.264 video coding standard; then introduces several existing classical Block-Matching Motion Estimation algorithm and analyses their strengths and weaknesses respectively; whereafter, in depth analyses the H.264 recommended core algorithm of motion estimation-UMHexagonS. Aimed at improving the lack of motion estimation algorithm, four aspects of the algorithm were optimized, which are identification in the initial search point the location of the reference search range, the dynamically generation of reference search range size as well as big hexagon and small hexagon search mode. Optimized UMHexagonS algorithm can fast and efficient identify the location and size of the reference search range. The improving big and small hexagonal search mode in the entire search process can significantly reduce the number of search point and achieve a better match results.Finally, the simulation carried out experiments proves the thesis in the improved algorithm. The optimized algorithm is realized in the H.264 reference software model JM10.1, compiled by VC6.0. Experimenting with a variety of movements with small, medium and large movement characteristics of sports video typical video sequences proves that, compared to UMHexagonS algorithm, our optimized algorithm can save about 17.2% ME time and reduce the complexity of original scheme as well as enhance the real-time performance of the encoder but has almost no changing in the reconstructed picture quality and bitrate.

Related Dissertations

  1. Rate-distortion Optimization Based Rate Control,TN919.81
  2. Optimizing and Realising Research on Vedio Compression in TV Guidance System,TN919.81
  3. Research on Rotational Image Stabilization Algorithms for Electronic Image Stabilization System,TP391.41
  4. Image and Video Compression Techniques Based on Super-Resolution Reconstruction Algorithm,TN919.81
  5. Projection-based digital video stabilization technology,TP391.41
  6. Research on Computer Technology Used in Three-dimensional Display,TP391.41
  7. Research on Blind Super-Resolution Algorithms for Image and Video,TP391.41
  8. The Design and Implementation of Wireless Video Surveillance System Based on Multi-channel Transmission,TP277
  9. Research on Super Resolution Reconstruction of Image Sequences,TP391.41
  10. Based on the the POCS image of super-resolution reconstruction algorithm,TP391.41
  11. Research on Three-dimensional Dynamic Display Technology,TP391.41
  12. Research on Error Resilience Techniques for H.264 Video Transmission over Wireless Networks,TN919.81
  13. Moving target trajectory analysis based Intelligent Traffic Monitoring System,TP277
  14. The Design of Vehicle Integrated Monitoring System Based on H.264 Vedio Encoding,TN919.81
  15. H.264-based Digital Video Watermarking Scheme,TN919.81
  16. Network Adaptive Wireless Video Transmission Algorithm for Study,TN919.81
  17. Optimization and Implementation for H.264 Decoder in the Environment of Mobile Internet,TN919.81
  18. Analysis of Fast Algorithm in H.264/AVC Video Coding Standard,TN919.81
  19. Research and Implementation of 3G Wireless Video Surveillance System Based on i.MX27,TN919.8
  20. Research on the Methods of Crowd Density Estimation and Motion State Analysis Based on Video Sequence,TP391.41
  21. HUD Image Vibration Detecting System Base on Improved Features Extracting Algorithm,TP391.41

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Image communication, multimedia communication > Image coding
© 2012 www.DissertationTopic.Net  Mobile