視頻壓縮中運動估計與碼率控制方法復雜性的研究.pdf

1、Motion estimation algorithm has a high impact on the visual quality of anencoder for a given bit-rate, the aim of this thesis is to examine the role of motionestimation techniques in video compression and to investigate

2、the performance ofseveral motion estimation techniques widely accepted by various video codingstandards for real time applications in cost effective manner. Motion estimation algorithm is regarded as an optimizatio

3、n problem in terms ofits application and efficiency. Fast motion estimation techniques along withexperimental results comparing their performances are presented in threedirections: reducing computational complexity, true

4、 motion representationmethods and improving coding efficiency. Recent advances in rate controltechniques for video coding, such as new concepts in rate-distortion modeling andquality constrained control, are presented. W

5、ith these techniques, the rate controlperformance can be improved. The paper not only summarizes these recent rate control techniques but alsoprovides explicit directions for future rate control algorithm design an