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公开(公告)号：US20240177500A1
公开(公告)日：2024-05-30
申请号：US18436216
申请日：2024-02-08
IPC分类号： G06V20/59 , G06F18/22 , G06V10/141 , G06V10/143 , G06V10/147 , G06V10/60
CPC分类号： G06V20/59 , G06F18/22 , G06V10/141 , G06V10/143 , G06V10/147 , G06V10/60 , G06V20/597
摘要： A disclosed monitoring system includes infrared light sources that illuminate a subject in a sequenced manner and a camera that captures images of the subject during periods in which the subject is illuminated by one of the light sources. The system includes a processor that analyzes captured images to determine a brightness measure of the images, and a controller controls output power of the infrared light sources in response to the brightness measure. In response to the processor detecting a brightness measure below a predetermined brightness threshold, the controller is configured to switch off or reduce an output illumination intensity of one of the infrared light sources. A disclosed method further determines whether an emission source is occluded by modulating an intensity of an electromagnetic emission source, detecting whether the modulation pattern is present in captured images, and determining that the emission source is occluded based on the detected modulation.
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公开(公告)号：US20240059220A1
公开(公告)日：2024-02-22
申请号：US18447462
申请日：2023-08-10
发明人： John NOBLE
摘要： Described herein is a rearview mirror (100) for a vehicle (102). The rearview mirror (100) comprises a body (104) mounted to the vehicle (102) and supporting an electrically controllable reflective device (108). A camera (110) is mounted to or adjacent to the body (104). The camera (110) comprises an image sensor having a pixel array adapted to capture two or three dimensional images of an interior of the vehicle (102), including a rear window (112), in both the visible and infrared wavelength range. A processor (124) is configured to process the captured images to generate a control signal for controlling a transmittance of the electrically controllable reflective device (108). The control signal is derived based on a comparison of pixel brightness between pixels within an interior vehicle cabin pixel region (150) and a rear window pixel region (152) in the captured images.
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公开(公告)号：US20210374443A1
公开(公告)日：2021-12-02
申请号：US17280591
申请日：2019-09-30
摘要： A disclosed system is configured to estimate an attention state of a subject within a scene. An imaging camera captures digital images of the subject and one or more light sources illuminate the subject during a period in which the digital images are captured. The system also includes a processor that processes the captured images to generate subject attention data of the subject. The processor further generates a primary visual attention ray of the subject from current subject attention data; generates a distribution of visual attention rays having an origin common to the primary visual attention ray; projects the visual attention rays onto a digital representation of the scene having a plurality of predefined regions of interest; determines an intersection of the projected visual attention rays with one or more of the regions of interest; and based on the intersection, estimates an attention state of the subject's attention.
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公开(公告)号：US20210118108A1
公开(公告)日：2021-04-22
申请号：US17253006
申请日：2019-06-17
发明人： John NOBLE
IPC分类号： G06T5/00 , B60R21/015 , H04N5/235
摘要： Described herein is an image pre-processing system and method. One embodiment provides a method (500) including: at step (501), receiving a plurality of images captured at a first frame rate, the plurality of images captured under at least two different image conditions; pre-processing the plurality of images by: at step (502) identifying one or more regions of interest within the images; at step (503), performing a visibility measure on the one or more regions of interest; and, at step (504), selecting a subset of the plurality of images based on the visibility measure; and, at step (505), feeding the subset of images to an image processing pipeline for subsequent processing at a second frame rate that is lower than the first frame rate.
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公开(公告)号：US10726576B2
公开(公告)日：2020-07-28
申请号：US16312458
申请日：2017-06-29
摘要： A method includes capturing images of a vehicle driver's face from a driver facing camera and images of a forward road scene from a forward facing camera. The images are analyzed to derive gaze direction data in a vehicle frame of reference. The gaze direction data are statistically collated to determine a frequency distribution of gaze angles. One or more peaks in the frequency distribution are identified and associated with corresponding reference points in the images to determine one or more reference gaze positions in the vehicle frame of reference. The one or more reference gaze positions are correlated with a position of the reference points in a forward facing camera frame of reference to determine a camera pose of a forward facing camera in the vehicle frame of reference.
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公开(公告)号：US20160353094A1
公开(公告)日：2016-12-01
申请号：US15167491
申请日：2016-05-27
发明人： Sebastian Rougeaux
IPC分类号： H04N13/04 , G06F3/0354 , G06T5/00 , G02B27/01
CPC分类号： H04N13/327 , G02B27/0093 , G02B27/0101 , G02B27/0172 , G02B2027/0187 , G06F3/011 , G06F3/013 , G06F3/03547 , G06F3/0487 , G06T19/006 , H04N13/344
摘要： Described herein is a method of calibrating a display in a head-mounted display system. The system includes a frame for maintaining the display in front of the user's eyes, and one or more lenses disposed between the display and the user's eyes. The method is configured to be performed by a computer processor associated with the head mounted display system and includes the steps of: a) generating a first image on the display based on predetermined parameters, the image including a two dimensional calibration structure identifiable by the user; b) receiving user input to generate a corrected image on the display; c) deriving calibration data based on the received user input and the predetermined parameters; and d) applying the calibration data to subsequent images generated on the display.
摘要翻译： 这里描述了一种校准头戴式显示系统中的显示器的方法。 该系统包括用于将显示器保持在用户眼睛前方的框架，以及设置在显示器和用户眼睛之间的一个或多个透镜。 该方法被配置为由与头戴式显示系统相关联的计算机处理器执行，并且包括以下步骤：a）基于预定参数在显示器上生成第一图像，该图像包括由用户可识别的二维校准结构 ; b）接收用户输入以在显示器上生成校正图像; c）基于所接收的用户输入和预定参数导出校准数据; 以及d）将校准数据应用于在显示器上产生的后续图像。
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公开(公告)号：US20240071108A1
公开(公告)日：2024-02-29
申请号：US18502697
申请日：2023-11-06
CPC分类号： G06V20/597 , B60W40/08 , G06V20/588 , G06V40/18 , B60W2540/229
摘要： Described herein is a method (1000) of detecting mobile device (400) use of a driver (102) of a vehicle (104). The method (1000) comprises the step (1001) of receiving a sequence of images of at least the driver's head captured from a camera (106, 420). At step (1002), the sequence of images are processed to determine visual attention of the driver (102) based on detected head and/or eye movements of the driver (102) over a period of time. At step (1003), mobile device use events are detected within the period of time in which a user interacts with the mobile device (400) that is located within the vehicle (104). At step (1004), a temporal correlation of the visual attention of the driver (102) with the mobile device use events is determined over the period of time. At step (1005), a determination is made that the driver (102) is using the mobile device (400) if the determined temporal correlation is greater than a threshold correlation coefficient.
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公开(公告)号：US20220377223A1
公开(公告)日：2022-11-24
申请号：US17769726
申请日：2020-11-06
发明人： John NOBLE , Fergus MCCRACKEN
摘要： Described herein is a method (800) and system for controlling one or more illumination devices in an eye tracker system (100) such that a measured pupil/iris contrast exceeds a predefined minimum pupil/iris contrast. The method (100) includes: a. capturing images of a subject (102), including one or both of the subject's eyes, during predefined image capture periods; b. illuminating, from one or more illumination devices (108 and 110), one or both of the subject's eyes during the predefined image capture periods, wherein at least one illumination device (108 and 110) is located sufficiently close to a lens of the camera to generate bright pupil effects; and c. selectively varying the output power of at least one of the illumination devices (108 and 110) to generate a bright pupil reflection intensity such that a measured pupil/iris contrast in a captured image exceeds a predefined minimum pupil/iris contrast.
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公开(公告)号：US20220230522A1
公开(公告)日：2022-07-21
申请号：US17572480
申请日：2022-01-10
发明人： Rama MYERS
摘要： Described herein is a pilot monitoring system (100) including a camera (106) configured to capture a plurality of digital images of an aircraft (104) cockpit including one or both of a pilot (102) and a co-pilot (103) and a processor (114) configured to process the captured images. The images are processed to determine an alertness state of the pilot (102) and/or the co-pilot (103) during operation of the aircraft (104) based on detected facial features of the pilot (102) and/or co-pilot (103) in the images. Processor (114) receives information indicative of a current phase of flight of the aircraft and displays a visualisation of the alertness level and/or determines a suitability of a controlled rest period for the pilot (102) or co-pilot (103) based on the alertness state of the pilot and (102)/or the co-pilot (103) and the current phase of flight. An alert is issued alert to the pilot (102) and/or co-pilot (103) including a determination of a suitability of a controlled rest period for either the pilot (102) or co-pilot (103).
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公开(公告)号：US10552675B2
公开(公告)日：2020-02-04
申请号：US14916082
申请日：2014-09-01
发明人： Sebastien Rougeaux
摘要： A method of determining the position of eyeballs within an image, the method including the steps of: (a) capturing a time series of image frames illuminated in a predetermined temporal manner by at least two spaced apart light sources, by at least one imaging sensor; (b) processing the image frames to determine specular reflection locations in the image frames; and (c) utilising the time series evolution of the location of the specular reflections to isolate corneal reflections from the determined specular reflection locations.
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