Non-contact Heartbeat Measurement by Hybrid Method of Passive Stereo and Active Stereo

摘要

We propose a system which simultaneously measures 3-D shape of chest and minute change of chest shape by heartbeat by a hybrid stereo method combining the passive stereo and the active stereo. Specifically, the 3-D shape of the chest is measured by the passive stereo using two infrared cameras. By projecting the dot matrix pattern on the chest surface using a laser projector, it is possible to capture minute shape change due to heart beat based on the principle of the active stereo. The proposed system is expected to be useful as a visualization tool for easy mechanical phenomena of the heart.