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AugFPN: Improving Multi-scale Feature Learning for Object Detection
Guo CX(郭超旭)1,2; Bin Fan1; Qian Zhang3; Shiming Xiang1,2; Chunhong Pan1
Conference NameIEEE Proceedings of Computer Vision and Pattern Recognition
Conference Date2020-06-14
Conference Placeonline meeting

Current state-of-the-art detectors typically exploit feature pyramid to detect objects at different scales. Among them, FPN is one of the representative works that build a feature pyramid by multi-scale features summation. However, the design defects behind prevent the multi-scale features from being fully exploited. In this paper, we begin by first analyzing the design defects of feature pyramid in FPN, and then introduce a new feature pyramid architecture named AugFPN to address these problems. Specifically, AugFPN consists of three components: Consistent Supervision, Residual Feature Augmentation, and Soft RoI Selection. AugFPN narrows the semantic gaps between features of different scales before feature fusion through Consistent Supervision. In feature fusion, ratio-invariant context information is extracted by Residual Feature Augmentation to reduce the information loss of feature map at the highest pyramid level. Finally, Soft RoI Selection is employed to learn a better RoI feature adaptively after feature fusion. By replacing FPN with AugFPN in Faster RCNN, our models achieve 2.3 and 1.6 points higher Average Precision (AP) when using ResNet50 and MobileNet-v2 as backbone respectively. Furthermore, AugFPN improves RetinaNet by 1.6 points AP and FCOS by 0.9 points AP when using ResNet50 as backbone.

KeywordAugFPN, Object Detection
MOST Discipline Catalogue工学
Indexed ByEI
Funding ProjectBeijing Natural Science Foundation[4162064] ; Young Elite Scientists Sponsorship Program by CAST[2018QNRC001] ; National Natural Science Foundation of China[61773377] ; National Natural Science Foundation of China[91646207] ; National Science Foundation of China[61573352,61876180] ; Major Project for New Generation of AI[2018AAA0100400]
Document Type会议论文
Corresponding AuthorBin Fan
Affiliation1.Institute of Automation, Chinese Academy of Science
2.School of Artifical Intelligence, University of Chinese Academy of Science
3.Horizon Robotics
Recommended Citation
GB/T 7714
Guo CX,Bin Fan,Qian Zhang,et al. AugFPN: Improving Multi-scale Feature Learning for Object Detection[C],2020:12595-12604.
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