Dual-path CNN with Max Gated block for Text-Based Person Re-identification

• URL: http://arxiv.org/abs/2009.09343v1
• Date: Sun, 20 Sep 2020 03:33:29 GMT
• Title: Dual-path CNN with Max Gated block for Text-Based Person Re-identification
• Authors: Tinghuai Ma, Mingming Yang, Huan Rong, Yurong Qian, Yurong Qian, Yuan Tian, NajlaAl-Nabhan
• Abstract summary: A novel Dual-path CNN with Max Gated block (DCMG) is proposed to extract discriminative word embeddings. The framework is based on two deep residual CNNs jointly optimized with cross-modal projection matching. Our approach achieves the rank-1 score of 55.81% and outperforms the state-of-the-art method by 1.3%.
• Score: 6.1534388046236765
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Text-based person re-identification(Re-id) is an important task in video surveillance, which consists of retrieving the corresponding person's image given a textual description from a large gallery of images. It is difficult to directly match visual contents with the textual descriptions due to the modality heterogeneity. On the one hand, the textual embeddings are not discriminative enough, which originates from the high abstraction of the textual descriptions. One the other hand,Global average pooling (GAP) is commonly utilized to extract more general or smoothed features implicitly but ignores salient local features, which are more important for the cross-modal matching problem. With that in mind, a novel Dual-path CNN with Max Gated block (DCMG) is proposed to extract discriminative word embeddings and make visual-textual association concern more on remarkable features of both modalities. The proposed framework is based on two deep residual CNNs jointly optimized with cross-modal projection matching (CMPM) loss and cross-modal projection classification (CMPC) loss to embed the two modalities into a joint feature space. First, the pre-trained language model, BERT, is combined with the convolutional neural network (CNN) to learn better word embeddings in the text-to-image matching domain. Second, the global Max pooling (GMP) layer is applied to make the visual-textual features focus more on the salient part. To further alleviate the noise of the maxed-pooled features, the gated block (GB) is proposed to produce an attention map that focuses on meaningful features of both modalities. Finally, extensive experiments are conducted on the benchmark dataset, CUHK-PEDES, in which our approach achieves the rank-1 score of 55.81% and outperforms the state-of-the-art method by 1.3%.

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