计算机科学 ›› 2020, Vol. 47 ›› Issue (12): 169-176.doi: 10.11896/jsjkx.191000021
谭建豪, 殷旺, 刘力铭, 王耀南
TAN Jian-hao, YIN Wang, LIU Li-ming, WANG Yao-nan
摘要: 传统相关滤波方法在目标运动模糊和光照变化上取得了一定的鲁棒效果但当目标存在形变、颜色变化、重度遮挡等干扰因素时难以实现跟踪鲁棒性差且当目标丢失后不能再恢复无法实现长时间跟踪.因此文中提出了一种鲁棒长时自适应目标跟踪算法.首先提出了一种特征互补策略将方向梯度直方图和全局颜色直方图的特征响应线性加权学习对颜色变化和形变都具有鲁棒性的相关滤波模型用以估计目标位移;然后仅提取目标前景HOG特征学习一个判别滤波器用以保持对目标外观的长期记忆使用该长期滤波器的输出响应来判别是否出现遮挡或跟踪失败采用在线SVM分类器对丢失目标进行再检测从而能够跟踪已丢失目标以实现长期跟踪;其次学习了以目标位置为中心的特征金字塔模型以预测尺度变化防止目标框漂移;最后在OTB目标跟踪基准数据集上对算法进行实验并与目前较为流行的目标跟踪算法进行对比进一步验证了所提算法的鲁棒性、准确性和优越性.
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