@inproceedings{e0892ed7cb69457d8bb4de685c79a2fa,
title = "Real-time detection of respiration rate with non-contact mode based on low-end imaging equipment",
abstract = "Standard instrumentation for the assessment of respiration rate is large and based on invasive method, and not suitable for daily inspection. An optical, simple and non-contact measurement method to detect human respiration rate using lowend imaging equipment is discussed. This technology is based on the visible light absorption of blood, which contains many important physiological information of the cardiovascular system. The light absorption of facial area can be indirectly reflected to gray value of the corresponding area image. In this paper, we acquire the respiration rate through the video signal captured by low-end imaging equipment. Firstly, the color CCD captures the facial area below the eyes and every frame of the video can be separated into three RGB channels. The blue channel is extracted as the research object. Then, we calculate the mean gray value for each image and draw the mean gray curve along the time. Fourier transform can get the frequency spectrogram of the graph, which is filtered through the Fourier filter. The extreme point is the value of the respiratory rate. Finally, an available interface program is designed and we have some volunteers tested. The correlation coefficient between the experimental data and the data provided by a reference instrument is 0.98. The consistency of the experimental results is very well. This technology costs so low that it will be widely used in medical and daily respiration rate measurement.",
keywords = "facial area, low-end imaging equipment, mean gray value, non-contact, respiration rate",
author = "Xiaoli Jin and Liquan Dong and Yuejin Zhao and Xiaohua Liu and Ming Liu and Lei Yang and Weiyu Liu and Jingsheng Zhao and Jinhui Xing",
year = "2013",
doi = "10.1117/12.2022147",
language = "English",
isbn = "9780819497062",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Applications of Digital Image Processing XXXVI",
note = "Applications of Digital Image Processing XXXVI ; Conference date: 26-08-2013 Through 29-08-2013",
}