红外技术, 2018, 40 (12): 1176, 网络出版: 2019-01-23
增强尺度估计的特征压缩跟踪算法
Feature Compression Tracking Algorithm with Enhanced Scale Estimation
摘要
目标跟踪过程中,目标的尺度变大会引入更多的背景噪声,而在目标尺度变小时却采样不足,导致算法鲁棒性不强。为了实现复杂背景环境下可视目标的稳健跟踪,本文提出一种增强尺度估计的特征压缩跟踪算法,单独设置一个判别相关滤波器用于尺度估计,在线学习更新样本尺度,实时匹配最佳目标尺寸并更新特征采样块尺寸,对样本特征压缩降维并在线学习更新分类器参数,减小计算开销,提高跟踪稳健性。实验结果显示,算法可以适应目标的姿态及尺度变化,与已有类似算法相比,本文提出的算法具有更强的鲁棒性。
Abstract
Additional background noise is introduced into a target tracking process as the scale of the target becomes larger. Furthermore, undersampling is achieved when the scale of the target becomes smaller, thereby resulting in an algorithm lacking robustness. To achieve robust tracking of visual targets in complex back-grounds, a feature compression tracking algorithm with enhanced scale estimation is proposed in this paper. A discriminant correlation filter is set up for scale estimation, and the sample size is updated online; therefore, the optimal target size is matched in real-time and the feature sample size is updated. In this algorithm, the sample feature is compressed and the classifier parameters are learned to reduce computation cost and improve tracking robustness. The experimental results show that the algorithm can adapt to the changes of pose and scale of the target. Compared with previous algorithms, this algorithm exhibits improved robustness.
徐康, 龙敏. 增强尺度估计的特征压缩跟踪算法[J]. 红外技术, 2018, 40(12): 1176. XU Kang, LONG Min. Feature Compression Tracking Algorithm with Enhanced Scale Estimation[J]. Infrared Technology, 2018, 40(12): 1176.