Transcription of Hierarchical Convolutional Features for Visual Tracking
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Hierarchical Convolutional Features for Visual Tracking Chao Ma Jia-Bin Huang Xiaokang Yang Ming-Hsuan Yang SJTU UIUC SJTU UC Merced Abstract around the estimated target location to incrementally learn a classifier over Features extracted from a CNN. Two issues Visual object Tracking is challenging as target objects of- ensue with such approaches. The first issue lies in the use ten undergo significant appearance changes caused by de- of neural networks as an online classifier following recent formation, abrupt motion, background clutter and occlu- object recognition algorithms, where only the outputs of the sion. In this paper, we exploit Features extracted from deep last layer are used to represent targets. For high-level Visual Convolutional neural networks trained on object recognition recognition problems, it is effective to use Features from the datasets to improve Tracking accuracy and robustness. The last layer as they are most closely related to category-level outputs of the last Convolutional layers encode the semantic semantics and most invariant to nuisance variables such as information of targets and such representations are robust intra-class variations and precise location.
Tracking by CNNs. Visual representations are of great importance for object tracking. Numerous hand-crafted features have been used to represent the target appear-ance such as subspace representation [24] and color his-tograms [37]. The recent years have witnessed significant advances of CNNs on visual recognition problems. Wang
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