FocusTrack: A Self-Adaptive Local Sampling Algorithm for Efficient Anti-UAV Tracking

作者：Ying Wang, Tingfa Xu, Jianan Li · 发表于：IEEE Transactions on Geoscience and Remote Sensing · 年份：2025 · DOI：10.1109/tgrs.2025.3562958 · 被引用次数：7 · 研究领域：Video Surveillance and Tracking Methods、Target Tracking and Data Fusion in Sensor Networks、Advanced Measurement and Detection Methods

Anti-UAV tracking poses significant challenges, including small target sizes, abrupt camera motion, and cluttered infrared backgrounds. Existing tracking paradigms can be broadly categorized intoglobal-basedandlocal-basedmethods. Global-based trackers, such as SiamDT [1] and SiamSTA [2], achieve high accuracy by scanning the entire field of view but suffer from excessive computational overhead, limiting real-world deployment. In contrast, local-based methods, including OSTrack [3] and ROMTrack [4], efficiently restrict the search region but struggle when targets undergo significant displacements due to abrupt camera motion. Through preliminary experiments, it is evident that a local tracker, when paired with adaptive search region adjustment, can significantly enhance tracking accuracy, narrowing the gap between local and global trackers. To address this challenge, we propose FocusTrack, a novel framework that dynamically refines the search region and strengthens feature representations, achieving an optimal balance between computational efficiency and tracking accuracy. Specifically, our Search Region Adjustment (SRA) strategy estimates the target presence probability and adaptively adjusts the field of view, ensuring the target remains within focus. Furthermore, to counteract feature degradation caused by varying search regions, the Attention-to-Mask (ATM) module is proposed. This module integrates hierarchical information, enriching the target representations with fine-gra...