提出新型自适应多通道跟踪器,提升红外目标追踪精度与鲁棒性
RAMCT: Novel Region-adaptive Multi-channel Tracker with Iterative Tikhonov Regularization for Thermal Infrared Tracking
- 基于空间自适应二值掩码增强目标区域稀疏性,动态抑制背景干扰
- 引入基于GSVD的迭代Tikhonov正则化,实现多通道特征灵活优化
- 在线动态调节参数,实时适应目标与背景变化,适合复杂红外场景
相关滤波(CF)类跟踪器因其计算效率高,在热红外(TIR)目标跟踪中备受关注。然而,现有方法在低分辨率图像、遮挡、背景杂波和目标形变等挑战下表现不佳。为此,本文提出RAMCT——一种区域自适应稀疏相关滤波跟踪器,融合多通道特征优化与自适应正则化策略。首先,通过空间自适应二值掩码改进学习过程,在目标区域强化稀疏性的同时动态抑制背景干扰。其次,引入广义奇异值分解(GSVD),提出基于GSVD的区域自适应迭代Tikhonov正则化方法,实现多特征通道的灵活鲁棒优化,增强对遮挡和背景变化的抵抗能力。第三,设计在线优化策略,基于动态差异调整参数,实现实时适应目标与背景变化,提升跟踪准确性和鲁棒性。在LSOTB-TIR、PTB-TIR、VOT-TIR2015和VOT-TIR2017等多个基准上的大量实验表明,RAMCT在准确率和鲁棒性方面均优于现有最先进跟踪器。
原文摘要 · Abstract (English)
Correlation filter (CF)-based trackers have gained significant attention for their computational efficiency in thermal infrared (TIR) target tracking. However, ex-isting methods struggle with challenges such as low-resolution imagery, occlu-sion, background clutter, and target deformation, which severely impact tracking performance. To overcome these limitations, we propose RAMCT, a region-adaptive sparse correlation filter tracker that integrates multi-channel feature opti-mization with an adaptive regularization strategy. Firstly, we refine the CF learn-ing process by introducing a spatially adaptive binary mask, which enforces spar-sity in the target region while dynamically suppressing background interference. Secondly, we introduce generalized singular value decomposition (GSVD) and propose a novel GSVD-based region-adaptive iterative Tikhonov regularization method. This enables flexible and robust optimization across multiple feature channels, improving resilience to occlusion and background variations. Thirdly, we propose an online optimization strategy with dynamic discrepancy-based pa-rameter adjustment. This mechanism facilitates real time adaptation to target and background variations, thereby improving tracking accuracy and robustness. Ex-tensive experiments on LSOTB-TIR, PTB-TIR, VOT-TIR2015, and VOT-TIR2017 benchmarks demonstrate that RAMCT outperforms other state-of-the-art trackers in terms of accuracy and robustness.
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