计算机工程 ›› 2019, Vol. 45 ›› Issue (8): 241-247.doi: 10.19678/j.issn.1000-3428.0051612

• 多媒体技术及应用 • 上一篇    下一篇

基于特征融合的改进LCT跟踪算法

官洪运a,b, 欧阳江坤a,b, 杨益伟a,b, 吴炜a,b   

  1. 东华大学 a. 信息科学与技术学院;b. 数字化纺织服装技术教育部工程研究中心, 上海 201620
  • 收稿日期:2018-05-21 修回日期:2018-06-27 出版日期:2019-08-15 发布日期:2018-07-11
  • 作者简介:官洪运(1960-),男,副教授,主研方向为视觉目标跟踪、图像通信;欧阳江坤(通信作者)、杨益伟、吴炜,硕士研究生。
  • 基金项目:
    国家自然科学基金(71171045);上海市教科委创新项目(14YZ130)。

Improved LCT Tracking Algorithm Based on Feature Fusion

GUAN Hongyuna,b, OUYANG Jiangkuna,b, YANG Yiweia,b, WU Weia,b   

  1. a. College of Information Science and Technology;b. Engineering Research Center of Digitalized Textile and Fashion Technology, Ministry of Education, Donghua University, Shanghai 201620, China
  • Received:2018-05-21 Revised:2018-06-27 Online:2019-08-15 Published:2018-07-11

摘要: 为解决LCT算法在目标形变与快速移动情况下跟踪效果差的问题,提出一种基于特征融合的跟踪算法。在梯度方向直方图特征相关滤波的基础上,提取目标与背景颜色直方图特征,得到颜色特征的目标预测位置。在此基础上,根据跟踪置信度确定特征融合权重,综合考虑梯度特征与颜色特征得到跟踪结果。实验结果证明,与LCT算法相比,该算法的距离精度和重叠精度分别提高了11.5%和21.2%,平均中心位置误差减少了15.3像素。

关键词: 机器视觉, 长期目标跟踪, 相关滤波, 颜色直方图, 目标形变, 特征融合

Abstract: To address the poor tracking performance of the LCT algorithm when the target is in deformation or fast moving,a tracking algorithm based on feature fusion is proposed.Based on the Histogram of Oriented Gradient(HOG) feature correlation filtering,the target and background color histogram features are extracted to obtain the target prediction position of the color feature.On the basis,the feature fusion weight is determined according to the tracking confidence.Tracking results are obtained by considering gradient features and color features.Experimental results show that compared with the LCT algorithm,the distance accuracy and overlap accuracy of the algorithm are increased by 11.5% and 21.2%,respectively,and the average center position error is reduced by 15.3 pixels.

Key words: machine vision, long-term object tracking, correlation filtering, color histograms, target deformation, feature fusion

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