Prathosh A. PRASAD,Lalit Keshav MESTHA,Himanshu J. MADHU
申请号：
US14742233
公开号：
US20160371833A1
申请日:
2015.06.17
申请国别(地区):
US
年份:
2016
代理人:
摘要：
What is disclosed is a system and method for determining a subjects respiratory pattern from a video of that subject. One embodiment involves receiving a video comprising N≧2 time-sequential image frames of a region of interest (ROI) of a subject where a signal corresponding to the subjects respiratory function can be registered by at least one imaging channel of a video imaging device. The ROI comprises P pixels. Time-series signals of duration N are generated from pixels isolated in the ROI. Features are extracted from the time-series signals and formed into P-number of M-dimensional vectors. The feature vectors are clustered into K clusters. The time-series signals corresponding to pixels represented by the feature vectors in each cluster are averaged along a temporal direction to obtain a representative signal for each cluster. One of the clusters is selected. A respiratory pattern is determined for the subject based on the representative signal.
