Noncontact respiratory measurement of volume change using depth camera.
In this study, a system is developed to measure human chest wall motion for respiratory volume estimation without any physical contact. Based on depth image sensing technique, respiratory volume is estimated by measuring morphological changes of the chest wall. We evaluated the system and compared with a standard reference device, and the results show strong agreement in respiratory volume measurement [correlation coefficient: r=0.966]. The isovolume test presents small variations of the total respiratory volume during the isovolume maneuver (standard deviation&#60;107 ml). Then, a regional pulmonary measurement test is evaluated by a patient, and the results show visibly difference of pulmonary functional between the diseased and the contralateral sides of the thorax after the thoracotomy. This study has big potential for personal health care and preventive medicine as it provides a novel, low-cost, and convenient way to measure user's respiration volume.
Graduate Institute of Network and Multimedia, National Taiwan University, Taiwan. d95944008@ ntu.edu.tw
Meng-Chieh
MC
Yu
Jia-Ling
JL
Liou
Shuenn-Wen
SW
Kuo
Ming-Sui
MS
Lee
Yi-Ping
YP
Hung
D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008176:Lung Volume Measurements / Q000379:methods*; D015203:Reproducibility of Results; D015656:Respiratory Mechanics / Q000502:physiology*; D012680:Sensitivity and Specificity; D035441:Thoracic Wall / Q000033:anatomy & histology* / Q000502:physiology*