DMTrack: Spatio-Temporal Multimodal Tracking via Dual-Adapter

TL;DR

DMTrack introduces a dual-adapter architecture for efficient spatio-temporal multimodal tracking, achieving state-of-the-art results with minimal parameters by effectively bridging modality gaps and enhancing cross-modality fusion.

Contribution

The paper proposes a novel dual-adapter architecture with spatio-temporal and progressive modality adapters for improved multimodal tracking.

Findings

Achieves state-of-the-art performance on five benchmarks.

Operates with only 0.93 million trainable parameters.

Effectively bridges modality gaps and enhances fusion.

Abstract

In this paper, we explore adapter tuning and introduce a novel dual-adapter architecture for spatio-temporal multimodal tracking, dubbed DMTrack. The key of our DMTrack lies in two simple yet effective modules, including a spatio-temporal modality adapter (STMA) and a progressive modality complementary adapter (PMCA) module. The former, applied to each modality alone, aims to adjust spatio-temporal features extracted from a frozen backbone by self-prompting, which to some extent can bridge the gap between different modalities and thus allows better cross-modality fusion. The latter seeks to facilitate cross-modality prompting progressively with two specially designed pixel-wise shallow and deep adapters. The shallow adapter employs shared parameters between the two modalities, aiming to bridge the information flow between the two modality branches, thereby laying the foundation for following modality fusion, while the deep adapter modulates the preliminarily fused information flow with pixel-wise inner-modal attention and further generates modality-aware prompts through pixel-wise inter-modal attention. With such designs, DMTrack achieves promising spatio-temporal multimodal tracking performance with merely 0.93M trainable parameters. Extensive experiments on five benchmarks demonstrate that DMTrack achieves state-of-the-art results. Our code and models will be available at https://github.com/Nightwatch-Fox11/DMTrack.