Fokko Pieter Wieringa

TL;DR: A route toward contactless imaging of arterial oxygen saturation (SpO2) distribution within tissue is described, based upon detection of a two-dimensional matrix of spatially resolved optical plethysmographic signals at different wavelengths, which shows potential for non-contact 2-D imaging reflection-mode pulse oximetry.

TL;DR: It is shown that a radar-based sensor can be used to monitor the individual vital signs (heartbeat and respiration) of multiple people in a real-world setting, keeping track of individual people during vigorous movement.

TL;DR: This contactless optical technique improves blood vessel visualization compared to the naked eye, and supports depth perception.

TL;DR: A continuous wave Doppler radar, operating as a phase-locked-loop in phase demodulator configuration, is proposed and in vivo demonstrated for noncontact vital signs monitoring and exhibits a unique precision in tracking the phase modulation caused by human cardiopulmonary activity.

TL;DR: In this paper, a method of obtaining an image of buried structures in an object, comprising of a camera for imaging visual and infrared-images, providing a bounded light source, partly irradiating said object by said bounded light sources, imaging a non-irradiated area of said object, and combining said buried structure image with a visual image of the object.