Leveraging Bottom-Up and Top-Down Attention for Few-Shot Object Detection

• URL: http://arxiv.org/abs/2007.12104v1
• Date: Thu, 23 Jul 2020 16:12:04 GMT
• Title: Leveraging Bottom-Up and Top-Down Attention for Few-Shot Object Detection
• Authors: Xianyu Chen, Ming Jiang, Qi Zhao
• Abstract summary: Few-shot object detection aims at detecting objects with few annotated examples. We propose an attentive few-shot object detection network (AttFDNet) that takes the advantages of both top-down and bottom-up attention.
• Score: 31.1548809359908
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Few-shot object detection aims at detecting objects with few annotated examples, which remains a challenging research problem yet to be explored. Recent studies have shown the effectiveness of self-learned top-down attention mechanisms in object detection and other vision tasks. The top-down attention, however, is less effective at improving the performance of few-shot detectors. Due to the insufficient training data, object detectors cannot effectively generate attention maps for few-shot examples. To improve the performance and interpretability of few-shot object detectors, we propose an attentive few-shot object detection network (AttFDNet) that takes the advantages of both top-down and bottom-up attention. Being task-agnostic, the bottom-up attention serves as a prior that helps detect and localize naturally salient objects. We further address specific challenges in few-shot object detection by introducing two novel loss terms and a hybrid few-shot learning strategy. Experimental results and visualization demonstrate the complementary nature of the two types of attention and their roles in few-shot object detection. Codes are available at https://github.com/chenxy99/AttFDNet.

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