-
公开(公告)号：US10818010B2
公开(公告)日：2020-10-27
申请号：US16074437
申请日：2017-02-08
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Wenjin Wang , Gerard De Haan
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.
-
公开(公告)号：US20240206754A1
公开(公告)日：2024-06-27
申请号：US18291344
申请日：2022-07-26
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Steffen Weiss , Wenjin Wang , Albert Garcia Tormo , Jan Hendrik Wuelbern , Albertus Cornelis Den Brinker
CPC classification number: A61B5/0261 , A61B5/02427 , A61B5/7203 , A61B5/7292
Abstract: A vital sign detection system comprises a camera (10) configured to acquire image frames from an examination zone (42). A signal processor (11) derives vital sign information from the acquired image frames. An illumination controller (12) controls illumination of the examination zone, generates temporal modulations of the illumination and synchronise the camera frame rate with the modulated illumination. The vital sign detection system of the invention achieves to increase the dynamic range and hence also the signal-to-noise ratio of the vital sign signal.
-
Patent Agency Ranking
公开(公告)号：US20240324971A1
公开(公告)日：2024-10-03
申请号：US18578757
申请日：2022-07-11
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Steffen Weiss , Wenjin Wang , Albertus Cornelis Den Brinker , Albert Garcia Tormo
CPC classification number: A61B5/7292 , A61B5/055 , A61B5/7264
Abstract: A synchronisation system comprises aa sensor arrangement to detect a trigger base event. An analysis module and an arithmetic unit are configured to access prior information on a time delay between the sensor arrangement's detection of the trigger base and a starting point of an acquisition time interval for acquiring imaging data. The starting point is computed of the acquisition time interval from the detected trigger base event and the prior information of the time delay. The time delay between the sensor arrangement's detection of the trigger base event and the acquisition time interval may vary between individual subjects, but for each individual subject the time delay is well reproducible and hence on a per subject basis may be calibrated for.
-
公开(公告)号：US20240320834A1
公开(公告)日：2024-09-26
申请号：US18579521
申请日：2022-07-22
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Wenjin Wang , Albertus Cornelis Den Brinker , Albert Garcia Tormo , Ioannis Pappous , Steffen Weiss , Jan Hendrik Wuelbern , Peter Caesar Mazurkewitz , Julien Thomas Senegas , Thomas Netsch
CPC classification number: G06T7/11 , G06T7/0012 , G06T7/254 , G06T7/60 , G06T2207/10016 , G06T2207/20024 , G06T2207/30076
Abstract: A method (100) is disclosed for determining a signal indicative of a state of a subject during a diagnostic imaging or therapeutic procedure based on camera observation. The method comprises acquiring (101) camera images from a camera configured to monitor a body part of the subject during the procedure, e.g. via a reflection thereof in a reflective surface. The method comprises detecting (102) a shape or contour of the reflective surface in at least one acquired camera image to define a region of interest in the image that contains image information corresponding to the body part of interest, and segmenting (103) the region of interest in one or more camera images to select pixels that correspond to a feature of the body part of interest. The method also comprises determining (105) the signal indicative of the state of the subject from the selection. The invention further relates to a corresponding device, system and computer-program.
-
5.发明授权公开(公告)号：US10290104B2
公开(公告)日：2019-05-14
申请号：US15159932
申请日：2016-05-20
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Gerard De Haan , Wenjin Wang
Abstract: According to an aspect, there is provided an apparatus for determining a pulse signal from a video sequence, the apparatus comprising a processing unit configured to obtain a video sequence, the video sequence comprising a plurality of image frames; form a plurality of video sub-sequences, each video sub-sequence comprising a frame segment from each image frame in a subset of the image frames, wherein each image frame is divided into a plurality of frame segments; for a first video sub-sequence formed from frame segments from a first subset of image frames, comparing a representative value for the first video sub-sequence to representative values for video sub-sequences formed from frame segments from a second subset of image frames; concatenate the first video sub-sequence to a second video sub-sequence formed from frame segments from the second subset of image frames based on the comparison of representative values; and determine a pulse signal from the concatenated video sub-sequences.
-
公开(公告)号：US10242441B2
公开(公告)日：2019-03-26
申请号：US15157452
申请日：2016-05-18
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Wenjin Wang , Gerard De Haan
Abstract: According to an aspect, there is provided an apparatus for identifying living skin tissue in a video sequence, the apparatus comprising a processing unit configured to receive a video sequence, the video sequence comprising a plurality of image frames; divide each of the image frames into a plurality of frame segments, wherein each frame segment is a group of neighboring pixels in the image frame; form a plurality of video sub-sequences, each video sub-sequence comprising a frame segment from two or more of the plurality of image frames; analyze the plurality of video sub-sequences to determine a pulse signal for each video sub-sequence; determine a similarity matrix based on pairwise similarities for each determined pulse signal with each of the other determined pulse signals; and identify areas of living skin tissue in the video sequence from the similarity matrix.
-
公开(公告)号：US09980658B2
公开(公告)日：2018-05-29
申请号：US15159902
申请日：2016-05-20
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Wenjin Wang , Gerard De Haan
CPC classification number: A61B5/02427 , A61B5/0077 , A61B5/02416 , A61B5/7485 , A61B2562/0233 , A61B2576/00 , G06K9/00114 , G06K9/00234 , G06K9/00496 , G06K9/00765 , G06K9/00906 , G06K9/34 , G06K9/4652 , G06K9/6215 , G06K9/622 , G06K9/6232 , G06K9/624
Abstract: According to an aspect, there is provided an apparatus for identifying living skin tissue in a video sequence, the apparatus comprising a processing unit configured to obtain a video sequence, the video sequence comprising a plurality of image frames; divide each of the image frames into a first plurality of frame segments; form a first plurality of video sub-sequences, each video sub-sequence comprising a frame segment from the first plurality of frame segments for two or more of the image frames; divide each of the image frames into a second plurality of frame segments, the second plurality of frame segments comprising a greater number of frame segments than the first plurality of frame segments; form a second plurality of video sub-sequences, each video sub-sequence comprising a frame segment from the second plurality of frame segments for two or more of the image frames; analyze the video sub-sequences in the first plurality of video sub-sequences and the second plurality of video sub-sequences to determine a pulse signal for each video sub-sequence; and analyze the pulse signals to identify areas of living skin tissue in the video sequence.
-
-
-
-
-
-
Search Results
7
records
(took 0.016 seconds)
