公开(公告)号：US20180122066A1

公开(公告)日：2018-05-03

申请号：US15336475

申请日：2016-10-27

Applicant: Xerox Corporation

Inventor： Prathosh A. PRASAD ,  Sanjay BHARADWAJ ,  Pragathi PRAVEENA ,  Tejaskumar Dipaklal BENGALI ,  Satish Prasad RATH ,  Himanshu Jayantkumar MADHU

IPC: G06T7/00 ,  G06T7/20 ,  G06T5/00 ,  A61B5/00 ,  A61B5/024 ,  A61B5/08 ,  A61B5/11 ,  A61B5/113

CPC classification number: G06T7/0012 ,  A61B5/0022 ,  A61B5/0077 ,  A61B5/024 ,  A61B5/08 ,  A61B5/1102 ,  A61B5/1128 ,  A61B5/113 ,  A61B5/742 ,  G06T5/002 ,  G06T7/246 ,  G06T2207/10016 ,  G06T2207/20024 ,  G06T2207/30048

Abstract: What is disclosed is a system and method for processing a video to extract a periodic signal which was captured by the video imaging device. One embodiment involves the following. First, a video of a subject in a scene is received. The video is acquired by a video imaging device. There is an underlying motion signal in the scene corresponding to cardiac or respiratory function. A time-series signal is generated for each pixel or for each group of pixels in a temporal direction across a plurality of image frames. Time-series signals of interest are selected. The selected time-series signals of interest are then processed to obtain a periodic signal corresponding to cardiac or respiratory function. The present method has a low computational complexity, is robust in the presence of noise, and finds its uses in applications requiring real-time motion quantification of a signal in a video.