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Block Matching Using Lower Bound Comparison Algorithm

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目录

ABSTRACT

List of Tables

Table of Figures

1. Introduction

2. Background and Literature Review

2.1 Category 1: Partial-Search-Set Techniques

2.1.1 Gradient descent techniques using pixel-by-pixel search with step size of one

2.1.2 Gradient descent techniques using coarse-to-fine search

2.1.3 Techniques that search locally according to the predicted motion vector

2.2 Category 2: Partial-Matching-Error Techniques

2.2.1 Techniques which sub-sample the pixels in the target and search blocks

2.2.2 Partial matching error methods

2.2.3 Partial matching error methods using inequalities

2.3 Category 3: Hybrid Techniques

3. Lower bound comparison algorithm

3.1 Theory

3.2 Application Issues

3.2.1 Use of Other Lower Bound Lists

3.2.2LowerboundcomparisonandThree-StepSearchAlgorithmsCombined

4. Implementation and Experiments

4.1 Implementation and execution environment

4.2 Testing Results and Discussions

5. Conclusions

Acknowledgements

References

Appendix Ⅰ

Appendix Ⅱ

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摘要

Block matching is frequently used in stereo vision, visual tracking, and video compression. In this technique, the current image frame is partitioned into non-overlapping fixed-size rectangular blocks. The goal here is to estimate the inter-frame motion vector for each block in the current frame by finding the best matching block (according to a matching criterion) in the reference frame, usually the previous frame, in a computationally efficient manner. In this report, we first give an overview of some of the fast block matching algorithms that have been proposed in the past, then introduce a new fast block matching algorithm.Unlike many block matching algorithms proposed in the past that can only assure a local minimum of matching error for the whole block, this algorithm, which is called

著录项

  • 作者

    毋伟;

  • 作者单位

    郑州大学;

  • 授予单位 郑州大学;
  • 学科 计算机软件与理论
  • 授予学位 硕士
  • 导师姓名 苏锦祥;
  • 年度 2003
  • 页码
  • 总页数
  • 原文格式 PDF
  • 正文语种 英文
  • 中图分类 TP391.41;
  • 关键词

    图像压缩; 图像处理; 比较算法;

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