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Device and method for extracting physiological information

A technology of physiological information and equipment, which is applied in the direction of biometric identification patterns based on physiological signals, recognition and application of patterns in signals, and can solve problems such as high effort and preparation work, and difficult detection of life signals

Inactive Publication Date: 2015-04-08
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such laboratory conditions cannot be transferred to routine field applications, since high effort and preparation would thus be required
After all, vital sign detection becomes even more difficult when the magnitude and / or nominal value of the interfering signal component is much greater than the magnitude and / or nominal value of the desired signal component to be extracted

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  • Device and method for extracting physiological information

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Embodiment Construction

[0062] The following sections describe exemplary methods for photoplethysmography, particularly telephotoplethysmography (remote PPG), utilizing several aspects of the devices and methods of the present invention. It should be understood that individual steps and features of the illustrated methods may be extracted from the context of the corresponding overall method. Accordingly, these steps and features may be part of separate embodiments which are still covered by the scope of the present invention.

[0063] The basic method for remote photoplethysmography is in Verkruysse, W. et al. (2008) "Remote phlethysmographic imaging using ambient light", Optics Letters, Optical Society of America, Washington It is described in Optic Express, Optical Society of America, Washington, D.C., USA, Vol.16, No.26, pages 21434-21445. WO 2011 / 042858 A1 discloses further methods and systems addressing the processing of signals comprising at least one component representing periodic phenomena ...

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Abstract

The present invention relates to a device and method for extracting physiological information from electromagnetic radiation emitted or reflected by a subject (12). A data stream (30) derived from detected electromagnetic radiation is received, the data stream (30) comprising a first sequence (92; 152) of signal samples (94) indicative of various spectral portions. The data stream (30) is split into at least two deduced staggered sequences (96a, 96b, 96c) of registered signal samples (94a, 94b, 94c), wherein each of the deduced staggered sequences (96a, 96b, 96c) represents a defined spectral portion (82a, 82b, 82c) and comprises indicative signal samples (94a, 94b, 94c) spaced in time. Artificial samples (102a, 2b, 102c) are generated under consideration of proximate indicative signal samples (94a, 94b, 94c) so as to at least partially replace blank spaces (98) between the indicative signal 10 samples (94a, 94b, 94c), thereby generating a supplemented data stream (106). Preferably, a spectral composition of the signal samples (94a, 94b, 94c) in the first sequence (92; 152) is alternatingly influenced.

Description

technical field [0001] The invention relates to a device and a method for extracting physiological information from electromagnetic radiation emitted or reflected by a subject, wherein the physiological information is indicative of at least one at least partially periodic vital signal. Background technique [0002] WO 2011 / 021128 A2 discloses a method and system for image analysis comprising: [0003] - Acquire image sequence; [0004] - performing a vision-based analysis of at least one image in the sequence of images to acquire data for classifying the state of the subject represented in the image; [0005] - determining at least one value of a physiological parameter of a living being represented in at least one image of a sequence of images by analyzing image data from the same sequence of images from which the at least one image is taken from which the vision-based analysis is performed to determine at least one value of the physiological parameter; and [0006] - cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00G06K9/20G06K9/00G06V10/143
CPCG06K9/2018G06K9/00503A61B5/0077A61B5/02416A61B5/0075G06V10/143G06F2218/02G06T7/0016G06T2207/10048G06T2207/30076G06V40/15G06V10/141G06V40/161A61B5/02433A61B5/7207A61B5/725A61B5/7278A61B5/7485A61B2562/0233A61B2576/02
Inventor G. 德哈安
Owner KONINKLJIJKE PHILIPS NV