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System and method for determining video-based pulse transit time with time-series signals
专利权人:
XEROX CORP
发明人:
MESTHA LALIT KESHAV,MESTHA LALIT KESHAV,KYAL SURVI,KYAL SURVI
申请号:
IN2467/DEL/2014
公开号:
IN2014DE02467A
申请日:
2014.08.29
申请国别(地区):
IN
年份:
2015
代理人:
摘要:
What is disclosed is a system and method for determining a subject of interest’s arterial pulse transit time from time-varying source signals generated from video images. In one embodiment, a video imaging system is used to capture a time-varying source signal of a proximal and distal region of a subject of interest. The image frames are processed to isolate localized areas of a proximal and distal region of exposed skin of the subject. A time-series signal for each of the proximal and distal regions is extracted from the source video images. A phase angle is computed with respect to frequency for each of the time-series signals to produce respective phase v/s frequency curves for each region. Slopes within a selected cardiac frequency range are extracted from each of the phase curves and a difference is computed between the two slopes to obtain an arterial pulse transit time for the subject.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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