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Hierarchical correlation siamese network for real-time object tracking
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DOI：10.1007/s10489-020-01992-x.png)
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Abstract
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Under the influence of deep learning, many trackers have emerged recently. Among them, Siamese network reaches a pleasant balance between accuracy and speed, but its tracking performance still lags behind other trackers. In this paper, we have proposed a Hierarchical Correlation Siamese Network (HC-Siam) for object tracking. The tracker uses convolutional features of each layer to compare the correlation and identifies the position of the tracking object depending on the greatest correlation. Meanwhile, we have designed a Correlation Attention Module (CA-Module). For various objects, this module can assign different weights to the hierarchical correlation and help the network choose the distinct correlation from the hierarchical correlation. Besides, objects' size and scale constantly varied during tracking, we claimed to use the separate scale factor in the wide and high directions to decrease the deformation of bounding boxes and increase the accuracy of our tracker. On the OTB dataset, the accuracy of HC-Siam is 6.5% higher than the baseline, and the speed of our tracker can reach 85 fps. On the VOT dataset, HC-Siam also has better performance in speed and accuracy.
Keywords:
Siamese network
Object tracking
Deep learning
Attention mechanism
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