Title
Parallel Residual Bi-Fusion Feature Pyramid Network for Accurate Single-Shot Object Detection
Abstract
This paper proposes the Parallel Residual Bi-Fusion Feature Pyramid Network (PRB-FPN) for fast and accurate single-shot object detection. Feature Pyramid (FP) is widely used in recent visual detection, however the top-down pathway of FP cannot preserve accurate localization due to pooling shifting. The advantage of FP is weakened as deeper backbones with more layers are used. In addition, it cannot keep up accurate detection of both small and large objects at the same time. To address these issues, we propose a new parallel FP structure with bi-directional (top-down and bottom-up) fusion and associated improvements to retain high-quality features for accurate localization. We provide the following design improvements: 1) parallel bifusion FP structure with a bottom-up fusion module (BFM) to detect both small and large objects at once with high accuracy; 2) concatenation and re-organization (CORE) module provides a bottom-up pathway for feature fusion, which leads to the bi-directional fusion FP that can recover lost information from lower-layer feature maps; 3) CORE feature is further purified to retain richer contextual information. Such CORE purification in both top-down and bottom-up pathways can be finished in only a few iterations; 4) adding of a residual design to CORE leads to a new Re-CORE module that enables easy training and integration with a wide range of deeper or lighter backbones. The proposed network achieves state-of-the-art performance on the UAVDT17 and MS COCO datasets.
Year
DOI
Venue
2021
10.1109/TIP.2021.3118953
IEEE TRANSACTIONS ON IMAGE PROCESSING
Keywords
DocType
Volume
Training, Location awareness, Visualization, Purification, Fuses, Bidirectional control, Object detection, Feature pyramid network, parallel residual bi-fusion, object detection, single-shot, CNN, feature fusion
Journal
30
Issue
ISSN
Citations 
1
1057-7149
0
PageRank 
References 
Authors
0.34
19
4
Name
Order
Citations
PageRank
Ping-Yang Chen124.12
Ming-Ching Chang227528.15
Jun-Wei Hsieh375167.88
Yong-Sheng Chen431430.12