We propose a new Group Feature Selection method for Discriminative Correlation Filters (GFS-DCF) based visual object tracking. The key innovation of the proposed method is to perform group feature selection across both channel and spatial dimensions, thus to pinpoint the structural relevance of multi-channel features to the filter system. In contrast to the widely used spatial regularisation or feature selection methods, to the best of our knowledge, this is the first time that channel selection has been advocated for DCF-based tracking. We demonstrate that our GFS-DCF method is able to significantly improve the performance of a DCF tracker equipped with deep neural network features. In addition, our GFS-DCF enables joint feature selection and filter learning, achieving enhanced discrimination and interpretability of the learned filters. To further improve the performance, we adaptively integrate historical information by constraining filters to be smooth across temporal frames, using an efficient low-rank approximation. By design, specific temporal-spatial-channel configurations are dynamically learned in the tracking process, highlighting the relevant features, alleviating the performance degrading impact of less discriminative representations and reducing information redundancy. The experimental results obtained on OTB2013, OTB2015, VOT2017, VOT2018 and TrackingNet demonstrate the merits of our GFS-DCF and its superiority over the state-of-the-art trackers. The code is publicly available at https://github.com/XU-TIANYANG/GFS-DCF.

提出了一种用于视觉对象跟踪的新的基于群组特征选取的判别相关滤波 (GFS-DCF) 方法。该方法能够跨越通道和空间维度进行群组特征选取，重点在于确定多通道特征对过滤系统的结构相关性。此外，我们的GFS-DCF能够实现联合特征选取和过滤器学习，实现了学习滤波器的增强辨别和可解释性。在实验结果上，我们的GFS-DCF在OTB2013、OTB2015、VOT2017、VOT2018和TrackingNet上均表现优异，超越了现有的跟踪器。

鲁棒视觉目标跟踪的联合群组特征选择与判别式滤波器学习