基於熱影像之呼吸頻率偵測及其應用

Respiration Rate Detection Based on Thermal Image and Related Applications

鄭岳松(Yue-Song Cheng)

指導教授 ： 楊淳良

淡江大學/工學院/電機工程學系碩士班/碩士(2022年)

https://doi.org/10.6846/TKU.2022.00350

摘要

近幾年，全球受到新冠肺炎的肆虐，傳染力驚人，每日都有巨量的確診人數以及日益提高的死亡人數，已讓醫療體系逐漸崩潰，各個國家都使出渾身解數為了對付新冠肺炎，然而巨量的確診人數已宣告無法控制，民眾的生命安全受到極大的威脅。
本研究主要使用NVIDIA Jetson Nano開發套件與FLIR Lepton 3.5 160x120 像素高解析度紅外線熱像儀感測器，透過非接觸的方式，來檢測戴口罩時的面部溫度變化，進而自行開發演算法計算呼吸頻率。此參數可初步且快速判斷是否為呼吸異常的危險因素。
所提出的方案是一種無創傷且有用的評估工具，呼吸頻率異常表明患者病情惡化，應立即採取醫療行為，本研究技術能夠判斷呼吸過緩、急促和暫停的現象。
本系統之開發宗旨為協助醫療中呼吸道傳染性疾病之篩檢，藉由人工智慧和紅外線熱影像的技術，提升醫療篩檢的效率，降低傳染性疾病的擴散，降低醫療人員負擔及避免感染風險，進而提升醫療照護品質，成為疫情中的第一道防線，為醫療科技貢獻一份新技術。

關鍵字

呼吸頻率 ； 熱影像 ； FLIR Lepton 3.5 ； OpenCV ； Jetson Nano

並列摘要

In recent years, COVID-19 has ravaged the world. A huge number of confirmed cases daily and increasing deaths have gradually caused the medical system to collapse. The infective power is fantastic. Every country has tried its best to deal with COVID-19. However, a significant number of confirmed cases have been declared uncontrollable, and that significantly threatens the safety of people's lives.
This research mainly uses the NVIDIA Jetson Nano development kit and the FLIR Lepton 3.5 with a high-resolution infrared thermal imager sensor of 160x120 pixels to detect the temperature change of the face when wearing a mask through a non-contact method and develop an algorithm to calculate the respiration rate. This parameter can preliminarily and quickly determine whether it is a risk factor for abnormal breathing.
The proposed scheme is a non-invasive and valuable assessment tool. An abnormal breathing rate indicates that the patient's condition is worsening, whose medical action should implement immediately. This research technology can determine the phenomenon of bradypnea, tachypnea, and apnea.
The purpose of developing this system is to assist in screening respiratory infectious diseases in medical treatment. Artificial intelligence and infrared thermal imaging technology can improve the efficiency of medical screening, reduce the spread of contagious diseases and the burden on medical personnel, and avoid the risk of infection. Thus, the proposed system enhances the quality of medical care, becomes the first line of defense in the epidemic, and contributes new technology to medical technology.

並列關鍵字

Respiration Rate ； Thermal Image ； FLIR Lepton 3.5 ； OpenCV ； Jetson Nano

參考文獻

參考文獻

[1] N. Aggarwal, M. Garg, V. Dwarakanathan, N. Gautam, S. S. Kumar, R. S. Jadon, M. Gupta and A. Ray, “Diagnostic accuracy of non-contact infrared thermometers and thermal scanners: A systematic review and meta-analysis,” Journal of Travel Medicine 27.8 (2020): taaa193.

[2] 震儀科技，紅外線熱像儀 Teledyne FLIR。Retrieved from https://www.pdic.com.tw/flir.htm

[3] Physiopedia，Respiratory Rate.Retrieved from https://www.physio-pedia.com/Respiratory_Rate?utm_source=physiopedia utm_medium=search utm_campaign=ongoing_internal

[4] C. Ferrari, L. Berlincioni, M. Bertini, and A. D. Bimbo, “Inner eye canthus localization for human body temperature screening,” 2020 25th International Conference on Pattern Recognition (ICPR), pp. 8833-8840, Milan, Italy, 10-15 Jan. 2021.