CFC-Net

This project hosts the official implementation for the paper:

CFC-Net: A Critical Feature Capturing Network for Arbitrary-Oriented Object Detection in Remote Sensing Images [paper]

Notes：Our paper has been accepted by TGRS.

Abstract

In this paper, we discuss the role of discriminative features in object detection, and then propose a Critical Feature Capturing Network (CFC-Net) to improve detection accuracy from three aspects: building powerful feature representation, refining preset anchors, and optimizing label assignment. The proposed framework creates more powerful semantic representations for objects in remote sensing images and achieves high-performance real-time object detection. Note that our model is a one-stage detector with only one anchor on each location in feature maps, which is equivalent to the anchor-free methods, thus the inference speed is faster.

Requirements

• torch >= 1.1
• CUDA version >=10.0

Installation

pip install -r requirements.txt
pip install git+git://github.com/lehduong/torch-warmup-lr.git

cd $ROOT/utils
sh make.sh

cd $ROOT/datasets/DOTA_devkit
sudo apt-get install swig
swig -c++ -python polyiou.i
python setup.py build_ext --inplace

Training

1. Move the dataset to the $ROOT directory.
2. Generate imageset files for dataset division via:

cd $ROOT/datasets
python generate_imageset.py

3. Modify the configuration file hyp.py and arguments in train.py, then start training:

python train.py

Inference

You can use the following command to test a dataset. Note that weight, img_dir, dataset,hyp should be modified as appropriate.

python demo.py

Evaluation

Different datasets use different test methods. For UCAS-AOD/HRSC2016/VOC/NWPU VHR-10, you need to prepare labels in the appropriate format in advance. Take evaluation on HRSC2016 for example:

cd $ROOT/datasets/evaluate
python hrsc2gt.py

then you can conduct evaluation:

python eval.py

Note that :

• the script needs to be executed only once, but testing on different datasets needs to be executed again.
• the imageset file used in hrsc2gt.py is generated from generate_imageset.py.

Main Results

Method	Dataset	Backbone	Input Size	mAP
CFC-Net	HRSC2016	ResNet-50	416 x 416	86.3
CFC-Net	HRSC2016	ResNet-101	800 x 800	89.7
CFC-Net	UCAS-AOD	ResNet-50	416 x 416	89.5
CFC-Net	DOTA	ResNet-101	800 x 800	73.5

Detections

• Results on HRSC2016: the red bounding box and the green denotes preset anchors and detection results, respectively.

• Results on DOTA:

Citation

If you find our work or code useful in your research, please consider citing:

@article{ming2021cfc,
    author={Ming, Qi and Miao, Lingjuan and Zhou, Zhiqiang and Dong, Yunpeng},
    journal={IEEE Transactions on Geoscience and Remote Sensing},
    title={CFC-Net: A Critical Feature Capturing Network for Arbitrary-Oriented Object Detection in Remote-Sensing Images},
    year={2021},
    volume={},
    number={},
    pages={1-14},
    doi={10.1109/TGRS.2021.3095186}
}

If you have any questions, please contact me via issue or email.