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arXiv · 2104.11589

SBNet: Segmentation-based Network for Natural Language-based Vehicle Search

Sangrok Lee·Taekang Woo·Sang Hun Lee
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Abstract

Natural language-based vehicle retrieval is a task to find a target vehicle within a given image based on a natural language description as a query. This technology can be applied to various areas including police searching for a suspect vehicle. However, it is challenging due to the ambiguity of language descriptions and the difficulty of processing multi-modal data. To tackle this problem, we propose a deep neural network called SBNet that performs natural language-based segmentation for vehicle retrieval. We also propose two task-specific modules to improve performance: a substitution module that helps features from different domains to be embedded in the same space and a future prediction module that learns temporal information. SBnet has been trained using the CityFlow-NL dataset that contains 2,498 tracks of vehicles with three unique natural language descriptions each and tested 530 unique vehicle tracks and their corresponding query sets. SBNet achieved a significant improvement over the baseline in the natural language-based vehicle tracking track in the AI City Challenge 2021.

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BibTeXRIS

Sangrok Lee, Taekang Woo, Sang Hun Lee. 2021-04-22. SBNet: Segmentation-based Network for Natural Language-based Vehicle Search. https://doi.org/10.1109/cvprw53098.2021.00457

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