Abstract：There are plenty of studies on improving the performance of pedestrian attribute recognition in video surveillance scenarios by mining the positive correlations between attributes. However, the research on negative correlations is far from enough. In this paper, a deep learning based multi-stage pedestrian attribute recognition method is proposed to simultaneously explore the positive and negative correlations between attributes. In the first stage, the loss value and the accuracy of each attribute are calculated during training. In the second stage, a new network branch is designed for the attributes with larger average loss and lower average accuracy, while other attributes remain on the original branch. All attributes are predicted by these two branches jointly. In the third stage, two new network branches with same structure as the second stage are designed to optimize the parameters and improve the performance during attribute recognition. Moreover, an improved loss function increasing the distance between positive and negative samples is proposed, and it is applied in all training stages to further improve the performance. Experiments on datasets RAP and PETA validate the promising performance of the proposed method.
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2018, Vol. 31 
