Non-contact respiration measurement using structured light 3-D sensor

We have examined a non-contact respiration measurement using Kinect, that is 3D sensor based on structured light, in order to decrease the burden of the pulmonary function test. In our proposed method, the respiratory waveform is produced from the volume change of thoracoabdominal part of examinee measured by the three-dimensional measurement function of Kinect. In this paper, we examine the validity of our proposed method by simultaneous measurement with the expiration gas analyzer and the flow meter. The experimental results implies that quantitative respiration measurement without contact-type sensor is realized by Kinect.