Recognition of small targets in remote sensing image using multi-scale feature fusion-based shot multi-box detector

Table 1. Dimensions of original and improved prior frames
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Table 1. Dimensions of original and improved prior frames
特征图原本先验框改进后先验框
Conv4_3_1 30 18
Fc7_1 60 36
Conv8_2_1 111 93
Conv9_2 162 150
Conv10_2 213 207
Conv11_2 264 264

Table 2. Definition of boundary area and number of targets based on instance size distribution
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Table 2. Definition of boundary area and number of targets based on instance size distribution
目标尺度数量
小目标 (0,60²] 1 236
中目标 (60²,120²] 1 864
大目标 (120²,+∞] 221

Table 3. Experimental results of different algorithms on remote sensing aircraft dataset

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Table 3. Experimental results of different algorithms on remote sensing aircraft dataset

检测方法	基础网络	AP/% (IOU=0.5)	帧频/（frame·s^-¹）
Faster R-CNN	VGG16	87.4	5.2
Faster R-CNN	ResNet-101	88.6	3.6
YOLO	GoogleNet	80.5	33.5
SSD	VGG16	85.9	30.2
DSSD	ResNet-101	86.2	12
FSSD	VGG16	87.5	21.2
Proposed method	VGG16	90.2	24.3

Table 4. Results of ablation experiments for each module
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Table 4. Results of ablation experiments for each module
SSD 特片融合机制通道注意力模块
先验框
改进
AP/%
(IOU=0.5)
帧频/（frame·s^-¹）
√ 85.9 30.2
√ √ 88.7 25.3
√ √ 87.2 28.5
√ √ 86.5 30.1
√ √ √ 89.8 24.8
√ √ √ √ 90.2 24.3

Table 5. Ablation experimental results of feature fusion module
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Table 5. Ablation experimental results of feature fusion module
Conv4_3_1 Fc7_1 Conv8_2_1
AP/%
(IOU=0.5)
Conv3_3 Conv4_3 Conv9_1 Conv4_2 Fc7 Conv10_1 Fc6 Conv8_2 Conv11_1
√ √ √ 85.9
√ √ √ √ √ 87.3
√ √ √ √ √ √ √ 88.1
√ √ √ √ √ √ √ √ √ 88.7

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Xin CHEN, Min-jie WAN, Chao MA, Qian CHEN, Guo-hua GU. Recognition of small targets in remote sensing image using multi-scale feature fusion-based shot multi-box detector[J]. Optics and Precision Engineering, 2021, 29(11): 2672

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Paper Information

Category: Information Sciences

Received: Mar. 27, 2021

Accepted: --

Published Online: Dec. 10, 2021

The Author Email: WAN Min-jie (minjiewan1992@njust.edu.cn), GU Guo-hua (gghnjust@mail.njust.edu.cn)

DOI:10.37188/OPE.20212911.2672

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Dimensions of original and improved prior frames

Table 1. Dimensions of original and improved prior frames

Table 2. Definition of boundary area and number of targets based on instance size distribution

Table 2. Definition of boundary area and number of targets based on instance size distribution

Table 3. Experimental results of different algorithms on remote sensing aircraft dataset

Table 3. Experimental results of different algorithms on remote sensing aircraft dataset

Table 4. Results of ablation experiments for each module

Table 4. Results of ablation experiments for each module

Table 5. Ablation experimental results of feature fusion module

Table 5. Ablation experimental results of feature fusion module

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