PHYSIOLOGICAL MEASUREMENT OBTAINED FROM VIDEO IMAGES CAPTURED BY A CAMERA OF A HANDHELD DEVICE

摘要

What is disclosed is a handheld device having at least one illuminator for projecting source light and a video camera for capturing images of a region of interest of a subject being monitored for a desired physiological function. The handheld device is positioned such that light reflected off the subject's region of interest is received by a sensor. A determination is then made as to how a physiological signal extracted from video images captured by the video camera can be improved by an adjustment to the illuminator with respect to intensity, spectrally, spatially, and/or temporally, to improve accuracy of a measurement of a desired physiological function. The illuminator is adjusted and video images of a region of interest are captured by the video camera and processed to extract a physiological signal corresponding to that physiological function. That signal is used to monitor the desired physiological function. Various embodiments are disclosed.

主权项

1. A method for improving a level of accuracy of a measurement of a desired physiological function obtained from video images captured by a video camera of a handheld device, the method comprising:
determining an adjustment to be applied to at least one illuminator of a handheld device having a video camera for capturing video images of a region of interest of a subject being monitored for a desired physiological function; and adjusting, in response to said determination, at least one of said illuminators with respect to any of: intensity, spectrally, spatially, and temporally, such that a level of accuracy of a measurement of said physiological function is improved.