Transactions of Nanjing University of Aeronautics & Astronautics
Thermal Infrared Salient Human Detection Model Combined with Thermal Features in Airport Terminal
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Abstract:
Target detection in low light background is one of the main tasks of night patrol robots for airport terminal. However， if some algorithms can run on a robot platform with limited computing resources， it is difficult for these algorithms to ensure the detection accuracy of human body in the airport terminal. A novel thermal infrared salient human detection model combined with thermal features called TFSHD is proposed. The TFSHD model is still based on U-Net， but the decoder module structure and model lightweight have been redesigned. In order to improve the detection accuracy of the algorithm in complex scenes， a fusion module composed of thermal branch and saliency branch is added to the decoder of the TFSHD model. Furthermore， a predictive loss function that is more sensitive to high temperature regions of the image is designed. Additionally， for the sake of reducing the computing resource requirements of the algorithm， a model lightweight scheme that includes simplifying the encoder network structure and controlling the number of decoder channels is adopted. The experimental results on four data sets show that the proposed method can not only ensure high detection accuracy and robustness of the algorithm， but also meet the needs of real-time detection of patrol robots with detection speed above 40 f/s.
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This work was supported in part by the National Key Research and Development Program of China （No.2018YFC0309104）， and the Construction System Science and Technology Project of Jiangsu Province （No.2021JH03）.
Clc Number:
TN391
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