Coarse-to-Fine Object Tracking Using Deep Features and Correlation Filters

• URL: http://arxiv.org/abs/2012.12784v1
• Date: Wed, 23 Dec 2020 16:43:21 GMT
• Title: Coarse-to-Fine Object Tracking Using Deep Features and Correlation Filters
• Authors: Ahmed Zgaren, Wassim Bouachir, Riadh Ksantini
• Abstract summary: This paper presents a novel deep learning tracking algorithm. We exploit the generalization ability of deep features to coarsely estimate target translation. Then, we capitalize on the discriminative power of correlation filters to precisely localize the tracked object.
• Score: 2.3526458707956643
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: During the last years, deep learning trackers achieved stimulating results while bringing interesting ideas to solve the tracking problem. This progress is mainly due to the use of learned deep features obtained by training deep convolutional neural networks (CNNs) on large image databases. But since CNNs were originally developed for image classification, appearance modeling provided by their deep layers might be not enough discriminative for the tracking task. In fact,such features represent high-level information, that is more related to object category than to a specific instance of the object. Motivated by this observation, and by the fact that discriminative correlation filters(DCFs) may provide a complimentary low-level information, we presenta novel tracking algorithm taking advantage of both approaches. We formulate the tracking task as a two-stage procedure. First, we exploit the generalization ability of deep features to coarsely estimate target translation, while ensuring invariance to appearance change. Then, we capitalize on the discriminative power of correlation filters to precisely localize the tracked object. Furthermore, we designed an update control mechanism to learn appearance change while avoiding model drift. We evaluated the proposed tracker on object tracking benchmarks. Experimental results show the robustness of our algorithm, which performs favorably against CNN and DCF-based trackers. Code is available at: https://github.com/AhmedZgaren/Coarse-to-fine-Tracker

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