基于仿射变换与均匀采样建模的目标跟踪

赵鹏鹏; 崔少辉; 高敏; 方丹

doi:10.3788/OPE.20152313.0777

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基于仿射变换与均匀采样建模的目标跟踪

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- 基于仿射变换与均匀采样建模的目标跟踪
- Object tracking based on affine transform and uniform sampling
- 光学精密工程 2015年23卷第10z期页码：776-782
- 作者机构：
  
  军械工程学院导弹工程系,河北石家庄,050003
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No.51205405)()
- DOI：10.3788/OPE.20152313.0777
  中图分类号： TP391.4
- 收稿日期：2015-06-02，
  
  修回日期：2015-06-30，
  
  纸质出版日期：2015-11-14
- 稿件说明：
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赵鹏鹏, 崔少辉, 高敏等. 基于仿射变换与均匀采样建模的目标跟踪[J]. 光学精密工程, 2015,23(10z): 776-782

ZHAO Peng-peng, CUI Shao-hui, GAO Min etc. Object tracking based on affine transform and uniform sampling[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 776-782
赵鹏鹏, 崔少辉, 高敏等. 基于仿射变换与均匀采样建模的目标跟踪[J]. 光学精密工程, 2015,23(10z): 776-782 DOI： 10.3788/OPE.20152313.0777.

ZHAO Peng-peng, CUI Shao-hui, GAO Min etc. Object tracking based on affine transform and uniform sampling[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 776-782 DOI： 10.3788/OPE.20152313.0777.

摘要

针对图像跟踪过程中目标发生的缩放、旋转以及斜切等几何变换

提出了基于仿射变换与均匀采样建模的目标跟踪方法。以粒子滤波算法为基本框架

使用6个仿射参数作为状态变量来预测目标可能发生的几何形变

并通过对仿射参数所表示的区域进行均匀采样实现对目标以及候选目标的建模。然后选用合适的相似性度量函数计算两组采样点之间的灰度差异以建立观测模型

从而得到状态变量的最优估计

实现目标的稳定跟踪。实验结果表明:视频序列的跟踪误差在10 pixel以内

优于传统目标跟踪方法以及其他基于仿射变换与特征建模的跟踪方法。该方法能够在复杂环境下稳定跟踪发生几何形变的目标。

Abstract

A target tracking method based on the affine transformation and uniform sampling was proposed to solve the issues that targets may generate different geometric transformations such as scaling

rotating and beveling in the process of image tracking. Based on the particle filter algorithm

six affine parameters were set as the stable variables to predict likely deformation of the target. Then

the target modeling and candidate target modeling were constructed by uniform sampling in the affine parameter area. A similarity measuring function was selected for calculation of gray differences between two sampling sites to create a monitoring model

thus the optimal estimation of the state variables was obtained and then stable tracking of the target was realized. The simulation experiment demonstrates that the proposed method can stably track geometric deformation targets

and the deviation is less than 10 pixel. The robustness and accuracy of the method are definitely superior to that of traditional target tracking method as well as other tracking method based on affine transformation and feature modeling.

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Keywords

references

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