The Artificial Light Texture (ALT) non-contact video-based technology allows detecting heartbeats, respiration, and movements of a person, does not require skin to be exposed, works for any pose of the person at any time of day and night.
ALT does not use depth information.
ALT can work with the light emitters of different structured light -based depth-sensing cameras such as Intel RealSense R200 and F200.
ALT can turn any device equipped with a RealSense camera into a pulse and respiration monitor which does not need to track your face or any area of open skin.
ALT has a number of potential applications in the fields of sleep, pulmonary, and cardio medicine.
The figure above shows ALT data obtained using the light emitter and IR video stream of a R200 camera. An image of the scene taken from the R200 IR video stream is shown on the left. A person is sitting in an armchair at about 3 feet distance from the R200 camera. The raw ALT data are shown in the figure by the black lines connecting the data points (black dots). The orange and blue lines are the moving averages of the raw data shown to highlight the heartbeat and respiration processes captured in the ALT data, respectively.