SDSTrack: Self-Distillation Symmetric Adapter Learning for Multi-Modal Visual Object Tracking

📄 arXiv: 2403.16002v2 📥 PDF

作者: Xiaojun Hou, Jiazheng Xing, Yijie Qian, Yaowei Guo, Shuo Xin, Junhao Chen, Kai Tang, Mengmeng Wang, Zhengkai Jiang, Liang Liu, Yong Liu

分类: cs.CV

发布日期: 2024-03-24 (更新: 2024-03-28)

备注: Accepted by CVPR2024

🔗 代码/项目: GITHUB


💡 一句话要点

提出SDSTrack以解决多模态视觉目标跟踪中的模态差距问题

🎯 匹配领域: 支柱二:RL算法与架构 (RL & Architecture) 支柱九:具身大模型 (Embodied Foundation Models)

关键词: 多模态跟踪 视觉目标跟踪 深度学习 特征提取 蒸馏训练 对称适配 鲁棒性增强

📋 核心要点

  1. 现有方法在多模态视觉目标跟踪中存在模态差距,导致预训练知识无法充分利用,且RGB模态主导信息提取。
  2. 本文提出的SDSTrack框架通过轻量级适配实现高效微调,平衡整合多模态特征,增强了跟踪器的鲁棒性。
  3. 实验结果显示,SDSTrack在RGB+深度、RGB+热成像和RGB+事件跟踪等多模态场景中均优于现有方法,尤其在极端条件下表现突出。

📝 摘要(中文)

多模态视觉目标跟踪(VOT)因其鲁棒性而受到广泛关注。早期研究主要集中在完全微调基于RGB的跟踪器,这种方法效率低下且由于多模态数据稀缺而缺乏泛化能力。为了解决这些问题,本文提出了一种名为SDSTrack的对称多模态跟踪框架,采用轻量级适配进行高效微调,直接将RGB的特征提取能力转移到其他领域,并以平衡的对称方式整合多模态特征。此外,设计了互补的掩蔽补丁蒸馏策略,以增强跟踪器在复杂环境下的鲁棒性。实验结果表明,SDSTrack在多种多模态跟踪场景中优于现有最先进的方法,并在极端条件下表现出色。

🔬 方法详解

问题定义:本文旨在解决多模态视觉目标跟踪中的模态差距问题,现有方法在转移预训练知识时效率低下,且RGB模态主导,导致其他模态信息未被充分利用。

核心思路:SDSTrack框架通过轻量级适配技术实现高效微调,直接将RGB特征提取能力转移至其他模态,并以对称方式整合多模态特征,从而提升跟踪性能。

技术框架:SDSTrack的整体架构包括特征提取模块、对称适配模块和掩蔽补丁蒸馏模块。特征提取模块负责从RGB和其他模态中提取特征,对称适配模块则实现特征的平衡整合,掩蔽补丁蒸馏模块增强跟踪器在复杂环境下的鲁棒性。

关键创新:最重要的创新点在于引入了对称适配机制和掩蔽补丁蒸馏策略,这与传统方法的单一模态微调方式有本质区别,使得多模态信息能够更有效地融合和利用。

关键设计:在参数设置上,SDSTrack采用了少量可训练参数以实现高效微调,同时设计了特定的损失函数以优化多模态特征的整合效果,网络结构则基于现有的深度学习框架进行改进,以适应多模态数据的特性。

🖼️ 关键图片

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📊 实验亮点

在多模态跟踪实验中,SDSTrack在RGB+深度、RGB+热成像和RGB+事件跟踪场景中均超过了现有最先进的方法,尤其在极端条件下的表现显著提升,具体性能数据未提供,但实验结果表明其鲁棒性和准确性均有显著改善。

🎯 应用场景

SDSTrack的研究成果在自动驾驶、监控系统和无人机等领域具有广泛的应用潜力。通过提高多模态跟踪的鲁棒性,该技术能够在极端天气、低光照和传感器故障等复杂环境中保持高效的目标跟踪能力,进而提升相关系统的安全性和可靠性。

📄 摘要(原文)

Multimodal Visual Object Tracking (VOT) has recently gained significant attention due to its robustness. Early research focused on fully fine-tuning RGB-based trackers, which was inefficient and lacked generalized representation due to the scarcity of multimodal data. Therefore, recent studies have utilized prompt tuning to transfer pre-trained RGB-based trackers to multimodal data. However, the modality gap limits pre-trained knowledge recall, and the dominance of the RGB modality persists, preventing the full utilization of information from other modalities. To address these issues, we propose a novel symmetric multimodal tracking framework called SDSTrack. We introduce lightweight adaptation for efficient fine-tuning, which directly transfers the feature extraction ability from RGB to other domains with a small number of trainable parameters and integrates multimodal features in a balanced, symmetric manner. Furthermore, we design a complementary masked patch distillation strategy to enhance the robustness of trackers in complex environments, such as extreme weather, poor imaging, and sensor failure. Extensive experiments demonstrate that SDSTrack outperforms state-of-the-art methods in various multimodal tracking scenarios, including RGB+Depth, RGB+Thermal, and RGB+Event tracking, and exhibits impressive results in extreme conditions. Our source code is available at https://github.com/hoqolo/SDSTrack.