Dissertation > Excellent graduate degree dissertation topics show

Research of H.264 Video Code Technology

Author: HeChun
Tutor: ZhaoYuHong
School: North China University of
Course: Circuits and Systems
Keywords: H.264/AVC Motion Estimation Motion vector Block-matching Search algorithm
CLC: TN919.81
Type: Master's thesis
Year: 2011
Downloads: 75
Quote: 0
Read: Download Dissertation

Abstract


H.264 is a next - generation video coding standard , added a few techniques to achieve higher coding efficiency , which in variable the regional block size of mobile forecasts estimated using seven different size blocks , to remove the screen the time between the redundancy (Temporal Redundancy). Motion estimation (Motion Estimation) plays an important role in the process of image compression processing different motion estimation algorithm will produce different effects compression processing time , the point of the search (Search Points) . Efficient motion estimation algorithm can effectively reduce the compression processing time required and desired search point . In H.264, the most important part of the movement estimation (ME) using multiple reference picture , the variable- area block size ( Variable Block Size) , the motion vectors (Motion Vector, MV) can search to fourth pixels accuracy (Quarter pixel resolution) , a new compression technology . As a result of these attractive features , the forecast is more accurate and has higher compression efficiency . However, precisely because of these characteristics , making the H.264 motion estimation complexity and the amount of computation substantially improved . This article first briefly the basic concepts of the video codec , and a brief introduction to the existing video coding method , followed by a brief analysis of the technical characteristics of the various video codec , after several classic block-matching motion estimation algorithm and through experiments analysis of their respective advantages and disadvantages . Finally, the algorithm used in H.264 reference asymmetric multi-layer hexagonal search algorithm (UMHexagonS) detailed description and analysis of the inadequacies of the algorithm , the inadequacies of the algorithm optimization. The experiment proved , the optimized asymmetric multi-layer hexagonal search algorithm can significantly shorten ME time and coding time , at the same time to ensure that the image quality is not affected .

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. Moving target trajectory analysis based Intelligent Traffic Monitoring System,TP277
  4. Research on Ad Hoc Network Routing Protocol Base on Quantum Search Algorithm,TN929.5
  5. Research on Video Compression Algorithm Based on Multi-core Computing Platform,TN919.81
  6. Research on Parallel Computation of H.264 Based on CUDA,TN919.81
  7. Study of Adaptive Motion Estimation in H.264/AVC,TN919.81
  8. Research of Variable Neighborhood Search and Application in Combinatorial Optimization,TP301.6
  9. H.264 Motion Estimation Algorithm and Application of hierarchical coding,TN919.81
  10. Chinese chess game tree search algorithm research and implementation,TP391.3
  11. Ultra-high definition video coding based on synchronous hierarchical motion estimation architecture design,TN919.81
  12. Multi Rules Production Scheduling Simulation Optimization in Discrete Manufacturing System,F273
  13. Research on Navigation Algorithm Based on Binocular Vision for a Lunar Rover,TP242.6
  14. Research on Key Technology of All IP Broadband Mobile P2P Network,TN915.02
  15. Research on Computer Game Techniques of Chinese Chess and Implementation of Wudao Chess Game System,TP18
  16. Multiple Description Video Coding Based on H.264 Coding Standard,TN919.81
  17. Research on the Key Algorithm of MPEG-4 Video Coding and Bit Rate Control,TN919.81
  18. Simulation of Ground Motion on Fuzhou Basin,P315
  19. Based on simulated annealing algorithm automatically generate test data EFSM model,TP311.52
  20. Dynamic PET Image Reconstruction Based on Regional Spatial-temporal Prior,TP391.41
  21. Methods to Image and Video De-hazing,TP391.41

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