Visual Tracking With Weighted Adaptive Local Sparse Appearance Model via Spatio-Temporal Context Learning
By Zhetao Li, Jie Zhang, Kaihua Zhang, Zhiyong Li. 2018
44 citations recorded by the source corpus.
Sparse representation has been widely exploited to develop an effective appearance model for object tracking due to its well discriminative capability in distinguishing the target from its surrounding background. However, most of these methods only consider either the holistic representation or the local one for each patch with equal importance, and hence may fail when the target suffers from severe occlusion or large-scale pose variation. In this paper, we propose a simple yet effective approach that exploits rich feature information from reliable patches based on weighted local sparse representation that takes into account the importance of each patch. Specifically, we design a reconstruction-error based weight function with the reconstruction error of each patch via sparse coding to measure the patch reliability. Moreover, we explore spatio-temporal context information to enhance the robustness of the appearance model, in which the global temporal context is learned via incremental subspace and sparse representation learning with a novel dynamic template update strategy to update the dictionary, while the local spatial context considers the correlation between the target and its surrounding background via measuring the similarity among their sparse coefficients. Extensive experimental evaluations on two large tracking benchmarks demonstrate favorable performance of the proposed method over some state-of-the-art trackers.
Subfields: Computer Vision and Pattern Recognition
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Citations in the corpus
- Self-Promoted Prototype Refinement for Few-Shot Class-Incremental Learning (2021, background): “To maintain the dependencies [33, 17, 34] of old classes and enhance the discrimination of the new classes, we propose a self-promoted prototype refinement mechanism f u .”
- Enhancing Sketch-Based Image Retrieval by CNN Semantic Re-ranking (2020, methodology): “Besides, algorithms for content-based video retrieval and processing [5], [68] exist.”
- Spatiotemporal-Textual Co-Attention Network for Video Question Answering (2019, background): “The feature maps by the top layers of C3D model have shown its capacity of representing motion patterns [19, 20, 24, 27, 55].”