A Method of Vital Capacity Measurement Using Three-Dimensional Depth Sensor

Respiratory diseases include restrictive diseases such as pulmonary fibrosis, obstructive diseases such as chronic obstructive pulmonary disease (COPD), and mixed diseases, all of which are serious and require early diagnosis. Pulmonary function tests for respiratory diseases using spirometry, X-ray, or computed tomography (CT) is only available in limited locations such as in hospitals. We have been studying the construction of a non-invasive and simple pulmonary function diagnostic system that can be used at home. Herein, we report a method for measuring the Vital Capacity using a three-dimensional (3D) depth sensor.