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公开(公告)号：EP3839880A1
公开(公告)日：2021-06-23
申请号：EP19218759.9
申请日：2019-12-20
摘要： There is provided a system (100) for performing ambient light image correction. The system comprises a light source (110), an imaging unit (120) configured to capture a plurality of images of an subject at an exposure time shorter than the wave period of the pulsed illumination, where the pulse frequency of the illumination is not a multiple integral of the frame rate at which the plurality of images are captured, and a control unit (130) configured to: obtain a predetermined number of candidate images, generate a sorted list of pixels by sorting respective pixels each corresponding to a pixel location in the plurality of candidate images, apply a set of weights to the respective sorted list of pixels, and generate an estimated ambient light corrected image based on the plurality of weighted and sorted lists of pixels by summing the plurality of weighted and sorted lists of pixels.
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公开(公告)号：EP3838117A1
公开(公告)日：2021-06-23
申请号：EP19218928.0
申请日：2019-12-20
IPC分类号： A61B5/00 , A61B5/1171
摘要： In an embodiment, a method (100) is described. The method comprises obtaining (102) a three-dimensional representation of a body surface. The method further comprises obtaining illumination information for the three-dimensional representation that is indicative of an orientation of the body surface relative to a reference axis. The method further comprises determining illumination compensation information (104). The illumination compensation information is used (106) to compensate for an illumination variation apparent from the illumination information in an image of the body surface.
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公开(公告)号：EP3820133A1
公开(公告)日：2021-05-12
申请号：EP19207436.7
申请日：2019-11-06
摘要： There is provided a system (100) for performing image motion compensation. The system comprises a light source (110), an imaging unit (120), and a control unit (130). The light source is configured to provide multiplexed illumination to an object in a plurality of color channels, the imaging unit is configured to capture a first image and a second image of the object in the plurality of color channels, and the control unit is configured to determine an estimated motion of pixels between the first image and the second image in a first color channel, and to generate a first motion compensated image by extrapolating the estimated motion of pixels between the first image and the second image to at least another one of the plurality of color channels.
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公开(公告)号：EP4125551A1
公开(公告)日：2023-02-08
申请号：EP21713058.2
申请日：2021-03-25
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公开(公告)号：EP4101369A1
公开(公告)日：2022-12-14
申请号：EP21178576.1
申请日：2021-06-09
IPC分类号： A61B5/00
摘要： The invention discloses a tissue illumination system (700). The tissue illumination system (700) includes at least one radiation source (702) configured to generate first radiation in a first wavelength band at a first intensity, the first radiation having a peak wavelength, λ 1 ; and second radiation in a second wavelength band at a second intensity, the second radiation having a peak wavelength, λ 2 . An intensity ratio of the first intensity relative to the second intensity is between 0.2 and 1; and the peak wavelength λ 1 of the first wavelength band and the peak wavelength λ 2 of the second wavelength band are selected such that they satisfy the following relationships: { 640 ≤ λ 1 ≤ 740 nm 470 ≤ λ 2 ≤ 530 nm λ 1 ≥ 3816 λ 2 − 425 + 594 nm λ 1 ≤ 7694 λ 2 − 425 + 594 nm . The tissue illumination system (700) also includes a radiation delivery unit (404) configured to deliver the first radiation and the second radiation towards tissue of a subject. An optical filter system, a device, a tissue illumination method and a computer program product are also disclosed.
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公开(公告)号：EP4057218A1
公开(公告)日：2022-09-14
申请号：EP21161955.6
申请日：2021-03-11
发明人： Asselman, Michel Jozef Agnes , Damodaran, Mathivanan , Bourquin, Yannyk Parulian Julian , Palero, Jonathan Alambra , Verhagen, Rieko
摘要： According to an aspect, there is provided a method for minimising error in ambient light corrected (ALC) images due to motion. The method comprises capturing a plurality of primary images of an object over a time window, with controlled illumination of the object varying over time, performing ambient light correction on at least a portion of the plurality of primary images to generate a plurality of ambient light corrected images, each ALC image being generated based on demodulating a sub-set of the plurality of primary images with differing controlled illumination, calculating an error value for pairs of ALC images, each pair of ALC images including a first ALC image and a second ALC image and comparing the error values for each pair of ALC images and selecting an error-minimised image from the pair of ALC images having the lowest error value within the time window Calculating the error value comprises comparing each pixel of the first ALC image with a corresponding pixel of the second ALC image, and determining a change in intensity for each pixel between the first ALC image and the second ALC image, and calculating an error value for the pair of ALC images based on the change in intensity over a plurality of pixels..
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17.发明公开
公开(公告)号：EP4057217A1
公开(公告)日：2022-09-14
申请号：EP21161944.0
申请日：2021-03-11
发明人： ASSELMAN, Michel Jozef Agnes , Damodaran, Mathivanan , Bourquin, Yannyk Parulian Julian , Palero, Jonathan Alambra , VERHAGEN, Rieko
摘要： According to an aspect, there is provided a method for minimising error in ambient light corrected image due to motion, the method comprising: capturing a plurality of primary images with controlled intensity of illumination varying over time, estimating an error value due to motion for each of a plurality of sub-sets of the plurality of primary images, and performing ambient light correction on an error minimised sub-set of primary images having the lowest estimated error value to generate an ambient light corrected (ALC) image with a minimised error. Estimating the error value for each sub-set of the plurality of primary images comprises identifying a pair of primary images in the sub-set including a first primary image and a second primary image, wherein the first primary image is captured temporally before the second primary image, determining a displacement vector matrix between the pair of primary images, and estimating the error value for the sub-set of primary images based on the displacement vector matrix between the pair of primary images. Determining the displacement vector matrix includes dividing the first primary image into a plurality of first grid elements and dividing the second primary image into a plurality of second grid elements, matching first grid elements to second grid elements which correspond to the same position on the object, and determining a displacement vector between each matched first grid element and second grid element to determine a displacement vector matrix describing the displacement vector of each grid element.
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公开(公告)号：EP4002380A1
公开(公告)日：2022-05-25
申请号：EP20208888.6
申请日：2020-11-20
摘要： According to an aspect, there is provided a computer-implemented method (200) for assessing a region of interest of a subject, the method comprising receiving (202) an image including a portion of a subject; receiving (204) an indication of a location of a region of interest (ROI) on the portion of the subject; receiving (206), from a sensor, sensor data indicative of a measurable parameter of the ROI; receiving (208), from the subject via a user interface, an indication of the nature of the ROI; generating (210) an association between the received sensor data and the nature of the ROI; and providing (212) at least one of the image, the sensor data, the indication of the nature of the ROI and the generated association for further processing.
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公开(公告)号：EP3922168A1
公开(公告)日：2021-12-15
申请号：EP20179148.0
申请日：2020-06-10
发明人： Bourquin, Yannyk Parulian Julian , Palero, Jonathan Alambra , Damodaran, Mathivanan , Verhagen, Rieko
IPC分类号： A61B5/00
摘要： In an embodiment, a method (100) is described. The method is a computer-implemented method. The method comprises receiving (102) data corresponding to at least part of a first, second and third image of a subject illuminated by temporally modulated illumination. A time delay between an acquisition start time of the first, second and third images is such that there is an overlap in time during acquisition of the first, second and third images. Based on a spatial intensity modulation pattern in each of the first, second and third images, the method further comprises determining (104) an estimated intensity distribution for an image of the subject.
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公开(公告)号：EP3903668A1
公开(公告)日：2021-11-03
申请号：EP20172496.0
申请日：2020-04-30
摘要： There is provided a computer-implemented for controlling a system, the method comprising: acquiring conditions under which data required for analyzing a first biological parameter is to be captured; determining, based on the conditions, requirements associated with an orientation of a body part, a position of a body part, a movement of a body part, and/or a level of a second biological parameter; acquiring, based on the requirements, a current orientation of the body part, a current position of the body part, a current movement of a body part of the subject, and/or a current level of the second biological parameter; determining a required adjustment of an orientation of the body part, a position of the body part, and/or a second biological parameter, based on the respective requirement and the information associated with the respective requirement; generating guidance for the subject based on the determined required adjustment.
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