Abstract: The present invention relates to a device, system and method for image segmentation of an image of a scene including a subject. To improve the segmentation, the device comprises a receiver (210) configured to receive electromagnetic radiation reflected from a scene including a subject, a polarization unit (220) configured to apply a first polarization on the received electromagnetic radiation to generate first polarized radiation and to apply a second polarization, which is different from the first polarization, on the received electromagnetic radiation to generate second polarized radiation, a sensor unit (230) configured to generate a first image from the first polarized radiation and a second image from the second polarized radiation, and a segmentation unit (250) configured to identify areas of different materials in the scene from a combination of the first and second images.

Abstract: The present invention relates to a device, system and method for determining a vital sign of a subject.

Abstract: The present invention relates to a wearable device for acquiring physiological information of a subject.

Abstract: The present invention relates to a device, system and method for less obtrusively determining a tissue characteristic of a subject, the device comprises a first control unit (11) configured to control an electromechanical transducer (31) by a first control signal (21) to transfer mechanical waves varying in a frequency range or with varying frequency content to an exposed tissue area of the subject; a second control unit (12) configured to control an electromagnetic radiation emitter (32) by a second control signal (22) to emit electromagnetic radiation towards the exposed tissue area of the subject; a radiation signal input (13) configured to obtain a radiation signal (23) indicative of electromagnetic radiation reflected from the exposed tissue area of the subject; and a processor (14) configured to determine a tissue characteristic signal (24) indicative of a tissue characteristic of the exposed tissue area of the subject derived from a frequency response or a frequency transfer function obtained from the

Abstract: To allow better quality rendering of video on any display, a method is proposed of encoding, in addition to video data (VID), additional data (DD) comprising at least one change time instant (TMA_1) indicating a change in time of a characteristic luminance (CHRLUM) of the video data, which characteristic luminance summarizes the set of luminances of pixels in an image of the video data, the method comprising: generating on the basis of the video data (VID) descriptive data (DED) regarding the characteristic luminance variation of the video, the descriptive data comprising at least one change time instant (TMA_1), and encoding and outputting the descriptive data (DED) as additional data (DD).

Abstract: The present invention relates to a device, system and method for obtaining vital sign related information of a living being.

Abstract: A system and method of processing video data: produce, on the basis of the video data, descriptive data regarding a variation in a characteristic luminance of the video data, wherein the characteristic luminance summarizes the set of luminances of pixels in an image of the video data, wherein the descriptive data identifies the at least one change time instant, wherein the change time instant indicates a time at which a change of the characteristic luminance occurs; and encode and output the descriptive data.

Abstract: The present invention relates to fields of medical technology and camera-based vital signs monitoring using remote photoplethysmography (rPPG). A Device (10) for determining a physiological parameter of a subject (20) is presented, the device comprising: an interface (11) for receiving image data of a scene, said image data comprising a time-sequence of image frames; and a processor (12) for processing said image data, wherein the processor is configured to perform the steps of: determining, for each of said image frames, a first statistical parameter value indicative of a statistical dispersion of pixel values of said image frame (202); concatenating said first statistical parameter values over time based on the time-sequence of the corresponding image frames to obtain a first candidate signal (203); extracting a physiological parameter of the subject based on said first candidate signal (204). The present invention further relates to a corresponding system (1) and method (200).

Abstract: The invention provides a physiological parameter sensing system (50) and method in which physiological information indicative of at least one physiological parameter is derived. The approach of the invention is based on constructing multiple pulse signals from different weighted combinations of at least two detection signals, derived from detected electromagnetic radiation directed onto or through a subjects skin region. The weightings are based on different of a set of various blood volume pulse vectors. A quality indication value is derived for each generated pulse signal, where this is based on a derived relationship between an obtained heart rate signal for the patient and the pulse signal. The blood volume pulse vector resulting in the pulse signal having the highest quality indicator value and/or from the derived pulse signal itself is used to derive the physiological parameter information.

Abstract: The present invention relates to a device, system and method for skin detection. To enable a reliable, accurate and fast detection the proposed device comprises an input interface (30) for obtaining image data of a scene, said image data comprising a time sequence of image frames, an extraction unit (31) for extracting a photoplethysmography (PPG) signal from a region of interest of said image data, a transformation unit (32) for transforming said PPG signal into a spectral signal, a sorting unit (33) for sorting said spectral signal to obtain a sorted spectral signal representing a descriptor, and a classifier (34) for classifying said region of interest as skin region of a living being or as non-skin region based on the descriptor.

Abstract: The present invention relates to a device, system and method for determining at least one vital sign of a subject.

Abstract: The application relates to camera-based vital signs monitoring using remote PPG.

Abstract: There is provided a system and method of assessing the quality of the extraction of the signal and the reliability of the physiological measurement by providing a system for producing a quality metric for physiological information extraction from a sequence of image frames, the system comprising a signal extraction unit configured to extract a signal representative of a physiological characteristic from a plurality of the image frames, a signal analyzer configured to calculate a plurality of physiological information results from the signal using a plurality of calculation functions, the plurality of calculation functions being comprised within a list of calculation functions, each physiological information result being calculated using a different calculation function, and a quality metric calculator for calculating a quality metric value based on a signal analysis metric derived from a comparison between the physiological information results of the plurality of physiological information results.

Abstract: A device, system and a method extract physiological information indicative of at least one vital sign of a subject. To provide a high motion robustness, an input interface is configured to obtain at least two detection signals derived from detected electromagnetic radiation transmitted through or reflected from a skin region of a subject. Each detection signal includes wavelength-dependent reflection or transmission information in a different wavelength channel. At least two pulse signals are computed from said at least two detection signals using different signature vectors for the computation of each pulse signal. Quality indicator values are computed for the pulse signals indicating a characteristic of the respective pulse signal. Physiological information indicative of at least one vital sign is derived from the signature vector resulting in the pulse signal with the best quality indicator value and/or from the pulse signal.

Abstract: The present invention relates to a device and method for processing physiological signals of a subject and in particular to a system for monitoring a (vascular) health parameter of a subject including such a device. The proposed device (10) comprises an input interface (11) for obtaining image data of a scene, said image data comprising a time sequence of image frames; an extraction unit (12) for extracting time-varying signals (92) indicative of cardiac-synchronous motion from said image data, wherein said time-varying signals (92) are motion signals indicative of a vascular micro-motion indicative of a vascular displacement waveform; a polarity determination (13) unit for determining a polarity of the time-varying signals, wherein the polarity corresponds to a phase of the time-varying signals; a combination unit (14) for combining time-varying depending on their polarity to obtain a combination signal; and an analysis unit (15) for determining a (vascular) health parameter based on the combination signal.

Abstract: A sensor system is for determining a breathing type of a subject. It has first and second electromagnetic radiation (e.g. optical) sensors, for example PPG sensors. The sensors are for application to the skin of the subject at different sensor locations. The signals from the first and second sensors are analyzed to determine if there is predominantly a first breathing type (e.g. chest breathing) or predominantly a second breathing type (e.g. belly breathing), or a mixture of the first and second breathing types.

Abstract: The present disclosure relates to a device and a method for extracting physiological information indicative of at least one health symptom from remotely detected electromagnetic radiation. The device comprises an interface for receiving a data stream comprising remotely detected image data representing an observed region comprising at least one subject of interest, wherein the image data comprises wavelength-dependent image information, wherein the wavelength-dependent image information is composed of at least two color channels representative of respective wavelength portions; an image processor for detecting channel signal strength information for at least two of the at least two color channels; and a data comparison unit for comparing detected channel signal strengths with respective reference values.

Abstract: The present invention relates to a device, system and method for obtaining a vital signal of a subject. To achieved increased robustness against motion, the device comprises a decomposition unit (12) for performing a spectral decomposition of at least two photoplethysmography detection signals being related to a physiological property of the subject and allowing extraction of a vital sign of the subject to obtain two or more spectral components of the detection signals. A weight is determined per spectral component based on an estimate of the relevance of the respective spectral component to the vital sign, derived from a characteristic of said spectral component.

Abstract: The present invention relates to a device and method for monitoring vital signs of a subject. In particular, the device for monitoring vital signs comprises, an imaging unit for obtaining image data of said subject, an interface for receiving motion data of said subject and/or said imaging unit, a processing unit for extracting vital signs of said subject from said image data, and a control unit for adapting parameters of said imaging unit and/or said processing unit based on the received motion data. A further aspect of the invention relates to a fitness device comprising a device for monitoring vital signs and a motion detection unit for providing said device for monitoring vital signs with motion data.

Abstract: In a device, system and method for determining the concentration of a substance, such as the oxygen saturation in the blood of a subject, the influence of specular reflection is reduced or removed. An input unit is configured to receive detection signals reflected back from a skin area of the subject in response to irradiation of the skin area by a radiation signal. A signal extraction unit is configured to extract at least two photo-plethysmography, PPG, signals at two different wavelengths from the detection signals. A processing unit is configured to compute the concentration of a selected substance in the blood of the subject based on the PPG signals taking into account a skin tone of the subject.