Tracking Algorithm with Correlation Filtering Based on Combination of Adaptive Feature Representation and Fern Classifier[J]. 2019, 53(6): 101-108.
DOI:
Tracking Algorithm with Correlation Filtering Based on Combination of Adaptive Feature Representation and Fern Classifier[J]. 2019, 53(6): 101-108.DOI: 10.7652/xjtuxb201906014.
Tracking Algorithm with Correlation Filtering Based on Combination of Adaptive Feature Representation and Fern Classifier
A target tracking algorithm based on combination of adaptive feature representation and a fern classifier is proposed to solve the problem that the linear interpolation update strategy used in the tracking algorithms based on kernel correlation filter architecture cannot deal with sudden changes in target's appearance. Firstly
dimension reduction through principal component analysis is carried out for extracted feature layers of the target to obtain good feature layers. Secondly
the target location is determined by combination of the passive-aggressive filters
where the aggressive filter is updated with a fixed update rate in each frame and the passive filter is updated only when a threshold condition is met. The aggressive filter is used to predict the next frame position of the target
and the passive filter is used to calculate the reliability of the predicted position generated by the aggressive filter and detector. When the prediction of the aggressive filter is unreliable
the detector predicts a position of the target. The best prediction of the target position is finally determined by comparing the reliability of both predicted positions. Experiment results show that the proposed method effectively addresses the model corruption and tracking failure caused by target mutation. Results on the OTB2015 dataset show that the proposed method significantly outperforms the discriminative correlation filter with channel and spatial reliability algorithm by 2.78% and 4.26% in precision and area under curve metrics
respectively.
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