Non-contact method of blood pressure estimation using only facial video
Non-contact method of blood pressure estimation using only facial video
复制标题
仅使用面部视频的非接触式血压估算方法
DOI：
10.1007/s10015-020-00622-6
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发表时间：
2020
影响因子：
0.9
通讯作者：
Norimichi Tsumura
中科院分区：
文献类型：
--
作者：
Ryo Takahashi;Keiko Ogawa-Ochiai;Norimichi Tsumura
在本文中，我们调查的可能性，使用基于图像的脉搏传导时间（iPTT）估计血压使用RGB（红，绿色，蓝色）摄像头的视频从脸上只。众所周知，iPTT与血压之间存在相关性。iPTT是指脉搏波到达身体两个不同部位的时间差。因此，可以利用从RGB相机获得的iPTT来估计血压而无需接触。然而，该方法需要同时捕获脸部和手掌的图像。这种视频的记录受到受试者姿势的限制。因此，在真实世界环境中实现血压估计是非常困难的。为了解决这些问题，本研究考察了是否可以基于身体的单个部位测量脉搏波传播。结果表明，前额和下巴的脉搏波之间存在时间差，因此可以仅使用面部测量iPTT。从下巴和前额获得脉搏波，并检查iPTT与来自所获得的脉搏波的血压之间的相关性。结果显示，这些iPTT指标与血压之间呈负相关。结果表明，简单的，非接触式血压估计将在未来成为可能。
In this paper, we investigate the possibility of using image-based pulse transit time (iPTT) to estimate blood pressure using an RGB (red, green, blue)-camera video taken from the face only. It is generally known that there is a correlation between iPTT and blood pressure. iPTT refers to the difference between the times when a pulse wave reaches two different parts of the body. Therefore, it is possible to estimate blood pressure without contact, with iPTTs obtained from the RGB camera. However, this method requires simultaneous capture of images of the face and palm. Recording of such videos is limited by the subject’s posture. Hence, it is very difficult to achieve blood pressure estimation in a real-world environment. To solve these problems, this study examined whether it is possible to measure pulse wave propagation based on a single part of the body. The results showed that there was a time difference between the pulse waves at the forehead and the chin, thus it was possible to measure iPTT using only the face. Pulse waves were obtained from the chin and forehead, and the correlations between iPTT and blood pressure from the acquired pulse waves were examined. The results showed a negative correlation between these iPTT measures and blood pressure. The results suggest that simple, non-contact blood pressure estimation will be possible in the future.