计算机工程 ›› 2011, Vol. 37 ›› Issue (15): 221-223.doi: 10.3969/j.issn.1000-3428.2011.15.071

• 多媒体技术及应用 • 上一篇    下一篇

基于LMedS&LS的全局运动估计算法

马 鹏,潘建寿,曹玲玲   

  1. (西北大学信息科学与技术学院,西安 710127)
  • 收稿日期:2011-02-17 出版日期:2011-08-05 发布日期:2011-08-05
  • 作者简介:马 鹏(1982-),男,硕士,主研方向:数字图像处理;潘建寿,教授;曹玲玲,硕士

Global Motion Estimation Algorithm Based on LMedS&LS

MA Peng, PAN Jian-shou, CAO Ling-ling   

  1. (School of Information Science and Technology, Northwest University, Xi’an 710127, China)
  • Received:2011-02-17 Online:2011-08-05 Published:2011-08-05

摘要: 针对全局运动估计过程常伴有局部运动的问题,提出一种基于LMedS&LS的全局运动估计算法。通过获取相邻2帧图像上对应特征块的坐标,将该算法应用到仿射变换模型中,估计出全局运动参量,并根据运动参量采用双线性内插法完成图像配准。实验证明,该算法相对于LMedS算法在精确度和实效性2个方面都有改进。

关键词: 全局运动估计, 特征块预检验, 改进型全搜索匹配算法, LMedS&LS算法, 图像配准

Abstract: For global motion estimation process is often accompanied by the influence of local campaign, this paper puts forward a global motion estimation algorithm based on LMedS&LS. It gets the corresponding characteristics of the coordinates of the piece from two adjacent frames, uses it in affine transformation model, estimates the global motion parameters, and completes image registration through the bilinear interpolation according to the motion parameters. Experiments show that compared with LMedS algorithm, it is improved in both the accuracy and effectiveness.

Key words: global motion estimation, feature block pre-test, improved full search matching algorithm, LMedS&LS algorithm, image registration

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