Learning view-specific deep networks for person re-identification

Z Feng, J Lai, X Xie - IEEE Transactions on Image Processing, 2018 - ieeexplore.ieee.org
Z Feng, J Lai, X Xie
IEEE Transactions on Image Processing, 2018ieeexplore.ieee.org
In recent years, a growing body of research has focused on the problem of person re-
identification (re-id). The re-id techniques attempt to match the images of pedestrians from
disjoint non-overlapping camera views. A major challenge of the re-id is the serious intra-
class variations caused by changing viewpoints. To overcome this challenge, we propose a
deep neural network-based framework which utilizes the view information in the feature
extraction stage. The proposed framework learns a view-specific network for each camera …
In recent years, a growing body of research has focused on the problem of person re-identification (re-id). The re-id techniques attempt to match the images of pedestrians from disjoint non-overlapping camera views. A major challenge of the re-id is the serious intra-class variations caused by changing viewpoints. To overcome this challenge, we propose a deep neural network-based framework which utilizes the view information in the feature extraction stage. The proposed framework learns a view-specific network for each camera view with a cross-view Euclidean constraint (CV-EC) and a cross-view center loss. We utilize the CV-EC to decrease the margin of the features between diverse views and extend the center loss metric to a view-specific version to better adapt the re-id problem. Moreover, we propose an iterative algorithm to optimize the parameters of the view-specific networks from coarse to fine. The experiments demonstrate that our approach significantly improves the performance of the existing deep networks and outperforms the state-of-the-art methods on the VIPeR, CUHK01, CUHK03, SYSU-mReId, and Market-1501 benchmarks.
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