Patent ID: 9185353
Filing Date: 2015-11-10
Classification: G06T,H04N

Abstract:
1. A method for removing environmental factors from signals generated from video images captured by a non-contact imaging system in a remote sensing environment, the method comprising: receiving video images captured of a subject of interest, said video comprising a time varying source video image acquired over at least one imaging channel; segmenting said video images into a first region of interest comprising a localized area where plethysmographic signals of said subject can be registered and a second region of interest comprising a background area, both of said first and second regions being exposed to the same environmental factors; pre-processing said video images to generate a time-series signal for each of said first and second regions; subtracting said time-series signal corresponding to each of said first and second regions to obtain an environmentally compensated signal; and communicating said environmentally compensated signal to a computer system.