arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2307.03373cs.CVcs.AI

一体化:探索基于多模态对齐的统一视觉-语言跟踪

All in One: Exploring Unified Vision-Language Tracking with Multi-Modal Alignment

Cooperative Medianet Innovation Center(合作媒体创新中心);Shanghai Jiao Tong University(上海交通大学);CloudWalk Technology Co., Ltd(云从科技有限公司);Northwestern Polytechnical University(西北工业大学);Shenzhen Research Institute of Big Data(深圳大数据研究院);Hong Kong University of Science and Technology (Guangzhou)(香港科技大学(广州));Shanghai AI Laboratory(上海人工智能实验室)

Chunhui Zhang, Xin Sun, Yiqian Yang, Li Liu, Qiong Liu, Xi Zhou, Yanfeng Wang

AI总结:

提出一体化框架,采用统一Transformer骨干联合提取与交互视觉语言特征,并通过多模态对齐模块提升效率,在五个基准上超越现有方法。

摘要:

当前主流的视觉-语言(VL)跟踪框架由三部分组成,即视觉特征提取器、语言特征提取器和融合模型。为了追求更好的性能,VL跟踪的自然做法是采用定制且更重的单模态编码器以及多模态融合模型。尽管有效,但现有的VL跟踪器将特征提取与特征整合分离,导致提取的特征缺乏语义指导,在复杂场景(如相似干扰物和极端光照)中目标感知能力有限。在本工作中,受近期在自然语言和计算机视觉任务中探索统一架构基础模型成功的启发,我们提出了一种一体化(All-in-One)框架,通过采用统一的Transformer骨干网络来学习联合特征提取与交互。具体来说,我们混合原始视觉和语言信号以生成语言注入的视觉令牌,然后将其拼接后输入统一的骨干架构。这种方法在统一骨干中实现了特征整合,无需精心设计的融合模块,从而形成更有效且高效的VL跟踪框架。为了进一步提高学习效率,我们引入了一个基于跨模态和模态内对比目标的多模态对齐模块,为统一的一体化Transformer骨干提供更合理的表示。在五个基准(即OTB99-L、TNL2K、LaSOT、LaSOT_Ext和WebUAV-3M)上的广泛实验证明了所提出的跟踪器在VL跟踪方面优于现有最先进方法。代码将在https://github.com/983632847/All-in-One公开提供。

英文摘要:

Current mainstream vision-language (VL) tracking framework consists of three parts, \ie a visual feature extractor, a language feature extractor, and a fusion model. To pursue better performance, a natural modus operandi for VL tracking is employing customized and heavier unimodal encoders, and multi-modal fusion models. Albeit effective, existing VL trackers separate feature extraction and feature integration, resulting in extracted features that lack semantic guidance and have limited target-aware capability in complex scenarios, \eg similar distractors and extreme illumination. In this work, inspired by the recent success of exploring foundation models with unified architecture for both natural language and computer vision tasks, we propose an All-in-One framework, which learns joint feature extraction and interaction by adopting a unified transformer backbone. Specifically, we mix raw vision and language signals to generate language-injected vision tokens, which we then concatenate before feeding into the unified backbone architecture. This approach achieves feature integration in a unified backbone, removing the need for carefully-designed fusion modules and resulting in a more effective and efficient VL tracking framework. To further improve the learning efficiency, we introduce a multi-modal alignment module based on cross-modal and intra-modal contrastive objectives, providing more reasonable representations for the unified All-in-One transformer backbone. Extensive experiments on five benchmarks, \ie OTB99-L, TNL2K, LaSOT, LaSOT$_{\rm Ext}$ and WebUAV-3M, demonstrate the superiority of the proposed tracker against existing state-of-the-arts on VL tracking. Codes will be made publicly available at https://github.com/983632847/All-in-One.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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