COMPENSATING FOR MOTION INDUCED ARTIFACTS IN A PHYSIOLOGICAL SIGNAL EXTRACTED FROM A SINGLE VIDEO

摘要

What is disclosed is a system and method for compensating for motion induce artifacts in a physiological signal obtained from a video. In one embodiment, a video of a first and second region of interest of a subject being monitored for a desired physiological function is captured by a video device. The first region is an area of exposed skin wherein a desired signal corresponding to the physiological function can be registered. The second region is an area where movement is likely to induce motion artifacts into that signal. The video is processed to isolate pixels in the image frames associated with these regions. Pixels of the first region are processed to obtain a time-series signal. A physiological signal is extracted from the time-series signal. Pixels of the second region are analyzed to identify motion. The physiological signal is processed to compensate for the identified motion.

主权项

1. A method for compensating for motion induced artifacts in physiological signals obtained from a single video captured by a single video imaging device of a subject being monitored for a desired physiological function in a non-contact, remote sensing environment, the method comprising:
receiving a video comprising a plurality of time-sequential image frames captured by a video imaging device of at least a first and second region of interest of a subject being monitored for a desired physiological function, said first region being an area of exposed skin wherein a desired signal corresponding to said physiological function can be registered by the video imaging device, said second region being an area where a movement by said subject is likely to induce motion artifacts into said signal; processing said video to isolate pixels in said image frames associated with each of said first and second regions of interest; processing pixels of said isolated first region to generate a time-series signal; extracting, from said time-series signal, a physiological signal corresponding to said desired physiological function; analyzing pixels of said isolated second region to identify at least one time interval when movement occurred; and processing said physiological signal over each of said identified time intervals to obtain a processed physiological signal.