Attempt to Visualize Cardiac Motion on Body Surface Using Active Stereoscopic Depth Camera

For the purpose of monitoring the cardiac mechanical phenomena, we propose a non-contact cardiac motion measurement method applying the active stereo depth camera. In the proposed method, the three-dimensional shape of the subject's chest is reconstructed based on the active stereo method using infrared light using RealSense F200 which is a three-dimensional image sensor manufactured by Intel Corporation. Then, by performing the active stereo measurement by projecting the green dot matrix pattern using the RealSense color camera, micro displacement of the chest surface due to the cardiac motion is acquired. In this paper, we confirm the feasibility of non-contact cardiac motion measurement by green dot matrix pattern projection, and attempt to visualize the distribution of the cardiac motion on the chest surface.