Dissertation > Excellent graduate degree dissertation topics show

Study of Inter Frame Coding in H.264/AVC

Author: ChenTianMi
Tutor: WuFeng；ShiGuangMing
School: Xi'an University of Electronic Science and Technology
Course: Circuits and Systems
Keywords: Video coding inter prediction motion-compensated prediction template matching patch matching
CLC: TN919.81
Type: Master's thesis
Year: 2011
Downloads: 39
Quote: 0
Read: Download Dissertation

Abstract


Inter prediction plays an important role in video coding due to its great capability of reducing temporal redundancy. In this paper, we propose three advanced technologies for inter frame coding based on template matching prediction.First, we propose a predictive patch matching for inter prediction. Besides the surrounding reconstructed pixels which form the template in template matching prediction, our proposed patch matching is able to utilize the predicted pixels generated by the traditional motion prediction. A linear combination of the reconstructed template and the predicted pixels permits to synthesize a prediction while maintaining the local variations of the target block. Furthermore, a mode selection mechanism is introduced to adaptively select the predictive patch matching at sub-block level. Experimental results demonstrate the effectiveness of our proposed predictive patch matching.In the second proposed technology, we further improve this predictive patch matching by incorporating line-based predictive patch matching with the previous block-based coding scheme, which we call hybrid predictive patch matching. Line-based structure is able to utilize both spatial and temporal correlations more efficiently than block-based structure with respect to different motion areas. The proposed hybrid prediction contributes to a reasonable mode decision selected explicitly at macroblock level depending on macroblock partition. Experimental results show the proposed scheme can reduce the bitrate compared to KTA.Finally, we propose a new motion compensated prediction scheme by adaptive patch matching with the full use of the reconstructed pixels surrounding the current block aiming at achieving a more accurate prediction than conventional MCP. The proposed scheme not only takes advantage of the temporal correlation but also efficiently exploits the spatial correlation between the current block and its template inside the patch. An adaptive linear combination of the current block and its template in motion estimation is designed to generate an optimal prediction while maintaining the local variation of the current block. Accordingly, a modification of the rate-distortion criterion is introduced to select the combined prediction. Experimental results show that our proposed APM achieves improved coding performance compared with H.264/AVC.

Related Dissertations

  1. Research on Graph-Based Algorithm for Tagsnps Selection,Q78
  2. The Brake Performance of Hydraulic Retarder and Simualtion Research on Its Application for Aircraft Arrestment,TH137.331
  3. Lifetime Prediction and Channel Wall Erosion Accelerate Test of Hall Thruster,V439.2
  4. Process Support Vector Machine and Its Application to Satellite Thermal Equilibrium Temperature Prediction,TP183
  5. Prediction of the Long-term and Medium-term Development Trends of Shanxi Population,O212.1
  6. The Study on Metallogenic Regularities and Metallogenic Prediction of Nanpo Copper Deposit in Mengla County, Yunnan,P618.41
  7. Hydrogeological Conditions and Mine Section Prediction of Wenshan Chief Cabinet Secretary Tungsten Mine Area,TD742
  8. A Study on the Predictive Model of Health Assessment in Li River, Guiling, Guangxi,X826
  9. Tracking Events for Food Complaint Documents Based on Ontology,TP391.1
  10. Gesture Recognition for Traffic Control Based on Thinning Algorithm and Template Matching,TP391.41
  11. Research on Face Tracking Technologies Based on Movement Prediction,TP391.41
  12. Drivers' eyes open or closed state of the computer image recognition technology development,TP391.41
  13. Research on Method of Ship Target Detection Under Complex Harbor Background,TP391.41
  14. Research on Vision Detection Algorithm for Tracing Printing System,TP391.41
  15. Fundus Image Segmentation Based on SVM and Template Matching,TP391.41
  16. Research of the Relationship between Respiratory and Lung Tumor Displacement,TP391.41
  17. Visual Servoing Approaches Based on Parallel Mechanism,TP391.41
  18. Research on Dynamics Performance and Optimal Design for Constrained Damping Vibration Isolator,TB535.1
  19. Study on Quality Change and Prediction Model for Shelf-life of Chilled Pork,TS251.4
  20. Strength Analysis of Overall Ship FEM Model Based on Design Wave Approach,U674.70
  21. Algorithm for the Traffic Flow Prediction Based on Improved Non-Parametric Regression Method,F570

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