Serial Over Parallel: Learning Continual Unification for Multi-Modal Visual Object Tracking and Benchmarking

• URL: http://arxiv.org/abs/2508.10655v1
• Date: Thu, 14 Aug 2025 13:54:04 GMT
• Title: Serial Over Parallel: Learning Continual Unification for Multi-Modal Visual Object Tracking and Benchmarking
• Authors: Zhangyong Tang, Tianyang Xu, Xuefeng Zhu, Chunyang Cheng, Tao Zhou, Xiaojun Wu, Josef Kittler,
• Abstract summary: Existing practices mix all data sensor types in a single training procedure, structuring a parallel paradigm from the data-centric perspective.<n>The absence of a unified benchmark where all types of data coexist forces evaluations on separated benchmarks, causing textitinconsistency between training and testing.<n>A unified benchmark, coined as UniBench300, is introduced to bridge the inconsistency by incorporating multiple task data, reducing inference passes from three to one and cutting time consumption by 27%.
• Score: 35.3869415482475
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Unifying multiple multi-modal visual object tracking (MMVOT) tasks draws increasing attention due to the complementary nature of different modalities in building robust tracking systems. Existing practices mix all data sensor types in a single training procedure, structuring a parallel paradigm from the data-centric perspective and aiming for a global optimum on the joint distribution of the involved tasks. However, the absence of a unified benchmark where all types of data coexist forces evaluations on separated benchmarks, causing \textit{inconsistency} between training and testing, thus leading to performance \textit{degradation}. To address these issues, this work advances in two aspects: \ding{182} A unified benchmark, coined as UniBench300, is introduced to bridge the inconsistency by incorporating multiple task data, reducing inference passes from three to one and cutting time consumption by 27\%. \ding{183} The unification process is reformulated in a serial format, progressively integrating new tasks. In this way, the performance degradation can be specified as knowledge forgetting of previous tasks, which naturally aligns with the philosophy of continual learning (CL), motivating further exploration of injecting CL into the unification process. Extensive experiments conducted on two baselines and four benchmarks demonstrate the significance of UniBench300 and the superiority of CL in supporting a stable unification process. Moreover, while conducting dedicated analyses, the performance degradation is found to be negatively correlated with network capacity. Additionally, modality discrepancies contribute to varying degradation levels across tasks (RGBT > RGBD > RGBE in MMVOT), offering valuable insights for future multi-modal vision research. Source codes and the proposed benchmark is available at \textit{https://github.com/Zhangyong-Tang/UniBench300}.

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