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WO2016034473A1 - Système de caméra pour un véhicule - Google Patents

Système de caméra pour un véhicule Download PDF

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Publication number
WO2016034473A1
WO2016034473A1 PCT/EP2015/069535 EP2015069535W WO2016034473A1 WO 2016034473 A1 WO2016034473 A1 WO 2016034473A1 EP 2015069535 W EP2015069535 W EP 2015069535W WO 2016034473 A1 WO2016034473 A1 WO 2016034473A1
Authority
WO
WIPO (PCT)
Prior art keywords
driver
images
camera system
vehicle
biometric parameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2015/069535
Other languages
English (en)
Inventor
Ruben Rajagopalan
Kars-Michiel Lenssen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Publication of WO2016034473A1 publication Critical patent/WO2016034473A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0077—Devices for viewing the surface of the body, e.g. camera, magnifying lens
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
    • A61B5/18—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state for vehicle drivers or machine operators
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/50—Context or environment of the image
    • G06V20/59—Context or environment of the image inside of a vehicle, e.g. relating to seat occupancy, driver state or inner lighting conditions
    • G06V20/597—Recognising the driver's state or behaviour, e.g. attention or drowsiness
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/113—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining or recording eye movement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02416—Measuring pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
    • A61B5/1103—Detecting muscular movement of the eye, e.g. eyelid movement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
    • A61B5/163—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state by tracking eye movement, gaze, or pupil change
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/369—Electroencephalography [EEG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6893—Cars

Definitions

  • the present invention relates to a camera system, in particular a dashboard camera for a vehicle.
  • the present invention further relates to a method for controlling a camera system, in particular a dashboard camera for a vehicle and a computer program comprising program code means for causing a computer to carry out the steps of the method when said computer program is carried out on a computer.
  • driving video recorders or dashboard cameras are generally known, which continuously acquire a video footage of area around a vehicle as evidence in the case of an accident or the like.
  • Known driving video recorders or dashboard cameras are adapted to record the video footage when the vehicle is started or by a certain user input or have an automatic recording option, which is triggered by an event detection by means of an integrated acceleration sensor.
  • a video sequence is stored a certain time frame before and after the measured event e.g. before and after an abnormal acceleration operating pattern is detected.
  • the driving video recorders and dashboard cameras usually record the video footage in a cyclic-buffered manner, regularly recording and overwriting data when the data is not relevant and stores a segment of the buffered footage securely on a memory device upon occurrence of a dangerous event e.g. a collision or a manual input.
  • a dangerous event e.g. a collision or a manual input.
  • US 2014/028848 Al discloses a drive video recording device in which a video is stored such that a playback speed of the video of the time period during which the amount of information is smaller is faster than a playback speed of the video of the time period during which the amount of the information is larger.
  • the information may include information related to the state of the driver.
  • the audio-visual content of the scene outside the vehicle can be of interest for the driver to be recorded, which may be missed if no abnormal driving behaviour is detected by the acceleration sensor.
  • a camera system in particular a dashboard camera for a vehicle is provided, comprising:
  • a camera unit for capturing a plurality of images of an area surrounding the vehicle
  • the storage device for storing the images captured by the camera unit, the storage device comprising a buffer memory for capturing the images during a predefined time frame,
  • a driver monitoring device for determining at least one biometric parameter of a driver of the vehicle
  • control unit for controlling the storage of the images, wherein the images are stored in the storage device using the biometric parameter and wherein the control unit is adapted to store the images if the biometric parameter exceeds a predefined level.
  • a method for controlling a camera system, in particular a dashboard camera of a vehicle comprising the steps of:
  • a computer program comprising program code means for causing a computer to carry out the steps of the method according to the invention when said computer program is carried out on a computer.
  • the present invention is based on the idea to detect at least one biometric parameter of a driver of the vehicle in order to estimate a driver's state or attention during the drive of the vehicle and to store the images captured by the camera unit in the storage device using the determined biometric parameter.
  • This is a possibility to determine anything which may be relevant for the driver on the basis of the driver's reaction or behaviour and to record correspondingly the captured images so that the images which may be of interest for the driver can be playbacked at a later stage.
  • the amount of video sequences which may be missed by the video system can be reduced since the driver's reaction or behaviour can be considered and the reliability of the storage of relevant video sequences can be improved.
  • control unit is adapted to store the images if the biometric parameter exceeds a predefined level. This is a possibility to store the images in the storage device if the driver's curiosity and/or attention reaches a certain level at which the captured images are considered to be of increased interest for the driver. This is a possibility to improve the reliability of the detection of a relevant situation in general.
  • control unit is adapted to store the images including the correspondingly determined biometric parameter. This is a possibility to find those video sequences or those captured images, which may be of increased relevance and/or most interesting for the driver, since the images and/or sequences can be searched on the basis of the level of the biometric parameter.
  • the plurality of images are consecutive images forming a video of the area surrounding the vehicle. This is a possibility to store a video sequence of the area surrounding the vehicle in order to improve the evidence in case of an accident or the like.
  • the driver monitoring system is adapted to determine a driver's state on the basis of the biometric parameter. This is a possibility to determine the driver's curiosity and/or attention so that relevant situations can be easily determined.
  • the driver monitoring device comprises a camera or is connected to a camera for monitoring the driver and for determining the biometric parameter. This is a possibility to achieve a comfortable driver monitoring device, which can determine the biometric parameter contactless.
  • the driver monitoring device is adapted to determine the biometric parameter on the basis of eye detection. This is a possibility to estimate the driver's attention by means of eye-gaze so that the driver's attention can be determined comfortable with low technical effort.
  • the driver monitoring device is adapted to determine a cardiac activity e.g. a heart rate or a blood pressure of the driver as the biometric parameter on the basis of photo-plethysmography. This is a possibility to determine a change of the driver's attention with high reliability and low technical effort.
  • the driver monitoring device comprises a photo-plethysmography device, which is adapted to evaluate the images captured by the driver monitoring device camera.
  • the driver monitoring device comprises a biometric sensor associated to the driver for determining the biometric parameter. This is a possibility to measure the biometric parameter by a contact sensor so that the reliability of the biometric measurement can be improved.
  • the driver monitoring device is connected to a biometric sensor associated to the driver for determining the biometric parameter.
  • a biometric sensor associated to the driver for determining the biometric parameter.
  • the driver monitoring device may be connected to other measurement devices connected to the driver's body like sport activity monitoring devices, smart phones or clip-on accessories which are capable to monitor biometric parameters of the driver for use by the driver monitoring device. This is a possibility to further improve the flexibility of the camera system.
  • the biometric sensor is a heart rate sensor. This is a possibility to detect the driver's attention by means of the heart rate with low technical effort and high reliability.
  • the biometric sensor is integrated in a seat of the vehicle. This is a possibility to measure the biometric parameter with high reliability in a comfortable way for the driver.
  • the biometric sensor is a brain activity sensor. This is a possibility to further improve the detection of the driver's attention, since the driver's attention can be easily derived from the detected brain activity.
  • the camera system can be integrated in the vehicle and connected to certain sensors and/or camera units of the vehicle or can be a separate system, which comprises the respective driver monitoring device for determining the biometric parameter and can be connected to biometric sensors integrated in the vehicle.
  • the driver monitoring device can comprise a single sensor or monitoring unit for determining one biometric parameter of the driver or can comprise a plurality of different sensors or monitoring units for determining different biometric parameters which would improve the detection of the driver's curiosity and/or attention.
  • the camera system can improve the reliability of the storage of the relevant images captured by the camera unit, since the driver's attention and/or curiosity can be derived from the biometric parameter so that anything which may be relevant for the driver is stored in the storage device and can be utilized and reviewed subsequently if necessary.
  • Fig. 1 shows a schematic representation of a camera system for a vehicle
  • Fig. 2 shows a schematic block diagram of a camera system for a vehicle including a camera unit and a driver monitoring device;
  • Fig. 3 shows a schematic flow diagram of a method for controlling a camera system for a vehicle.
  • Fig. 1 shows a schematic illustration of a camera system 10, in particular a dashboard camera 10.
  • the camera system 10 is installed in a vehicle 12 in order to capture images in a field of view 14 in front of the vehicle 12 or around the vehicle 12.
  • the camera system 10 comprises a camera unit 16 for capturing the images in the field of view 14.
  • the camera unit 16 is adapted to capture continuously consecutive images in the field of view 14 and to buffer the images in a buffer memory (not shown), wherein the buffered images are stored in a storage device if the captured images are relevant.
  • the camera system 10 further comprises a driver monitoring device 18, which is adapted to determine at least one biometric parameter of a driver 20 of the vehicle 12 to determine a driver's attention.
  • a control unit (not shown) of the camera system 10 stores the images captured by the camera unit 16 in the storage device by using the biometric parameter determined by the driver monitoring device 18.
  • the captured images may be stored in the storage device if the biometric parameter exceeds a predefined level so that the buffered images are stored in the storage device if the driver's attention is increased and the captured images are considered to be relevant.
  • the biometric parameter and/or the determined driver's attention is stored additionally to the captured images in the storage device e.g. as metadata so that the relevance of the captured and stored images can be considered subsequently.
  • the driver monitoring device 18 comprises in this particular embodiment a driver monitoring camera 19 for monitoring the face of the driver 20 in order to determine the bio metric parameter based on images captured of the driver's face.
  • the biometric parameter can be an eye-gaze, a blinking frequency determined by pattern detection on the basis of the captured images or may be a cardiac activity determined by means of photo-plethysmography on the basis of a colour evaluation of the captured images of the driver's face.
  • the driver monitoring device 18 can be connected to biometric sensors 22, 24 in addition to the driver monitoring camera 19 or as an alternative to the camera 19 for determining the biometric parameter of the driver 20.
  • the biometric sensors 22, 24 may be integrated in the vehicle 12 and in particular integrated in a seat 26 of the vehicle 12 in order to measure at least one biometric parameter of the driver 20.
  • the biometric sensors 22, 24 may be a heart rate sensor or a brain-activity sensor which can determine the heart rate or the brain activity of the driver 20, respectively. In the case that the biometric sensor 22, 24 is a brain activity sensor, the sensor may also be integrated in a handgear of the driver 20 connected to the driver's head.
  • the driver monitoring device 18 may also be connected to active on-body monitoring devices like sports activity tracking devices, smart phones or clip-on accessories attached to the driver 20, which are provided to measure biometric parameters of the driver in order to determine the driver's state.
  • active on-body monitoring devices like sports activity tracking devices, smart phones or clip-on accessories attached to the driver 20, which are provided to measure biometric parameters of the driver in order to determine the driver's state.
  • the control unit of the camera system 10 determines on the basis of a single biometric parameter or on the basis of a plurality of different biometric parameters determined by the camera and/or the biometric sensors 22, 24 the driver's attention and controls correspondingly the storage of the images captured by the camera unit 16.
  • the images captured by the camera unit 16 can be stored according to their relevance with high reliability, since the captured images are stored using at least one biometric parameter determined by the driver monitoring device 18.
  • the camera unit 16 may be directed to the front, the back and/or the sides of the vehicle 12 in order to monitor anything surrounding of the vehicle 12.
  • the camera system may also be connected to auxiliary cameras of the vehicle 12 to receive additional images of the area around the vehicle 12.
  • the camera system may be adapted to assemble the different images from the different cameras to a panorama image or a panorama video of the area surrounding the vehicle 12.
  • Fig. 2 shows a schematic block diagram of the camera system 10. Identical elements are denoted by identical reference numerals, wherein here merely the differences are explained in detail.
  • the camera system 10 comprises the camera unit 16 for capturing the plurality of images in the field of view 14, the driver monitoring device 18 for monitoring the driver 20 and for determining at least one biometric parameter of the driver 20, a central processing unit 28 for controlling the camera system 10 and for storing the images captured by the camera unit 16 in a storage device 30.
  • the central processing unit 28 controls the storage of the images captured by the camera unit 16 by using the biometric parameter determined by the driver monitoring device 18.
  • the central processing unit 28 can store the images captured by the camera unit 16 and buffered in a buffer memory in the storage device 30 if the biometric parameter and/or a driver's attention derived from the biometric parameter exceeds a predefined level so that the relevant images are stored in the storage device 30 for later playback or review.
  • the images in the buffer memory which are captured a predefined time frame before the biometric parameter exceeds the predefined level and a predefined time frame after the exceed of the predefined level are correspondingly stored as an image sequence in the storage device 30 for later playback.
  • the biometric parameter and/or the driver's attention derived from the biometric parameter may be stored together with the captured images as e.g. metadata in the storage device 30, so that the driver's attention for each of the captured images can be derived subsequently. This may help to find those image sequences subsequently which are the most relevant with respect to the driver's attention.
  • the driver monitoring device 18 may comprise or may be connected to the driver monitoring camera 19 and/or the biometric sensors 22, 24 in order to determine one or more biometric parameter which can be utilized for determining the driver's attention.
  • the driver's attention may be determined on the basis of eye-gaze-tracking and/or by determining of a blinking frequency of the eyes of the driver 20 or the images may be evaluated by a photo- plethysmography detector by evaluating a colour of the skin of the driver 20.
  • the driver monitoring device 18 may also comprise or may be connected to the biometric sensors 22, 24 which may be heart rate sensors or brain-activity sensors like EEG sensors in order to determine the driver's attention.
  • the camera system may be a separate system including the cameras and/or the sensors or may be a system which is connectable to sensors premounted in the vehicle 12 e.g. a driver monitoring camera and/or biometric sensors integrated in e.g. the seat 26 of the vehicle 12.
  • Fig. 3 shows a schematic flow diagram of a method for controlling the camera system 10, which is generally denoted by 40.
  • the method 40 generally starts with step 42, which corresponds to an activation of the camera system 10.
  • the driver monitoring device 18 determines the at least one biometric parameter as shown at step 44 followed by the determination of the driver's attention shown at step 46.
  • the camera unit 16 captures an image in the field of view 14 of an area surrounding the vehicle 12 and at step 50, the captured image is stored in the buffer memory for cyclic buffering the captured images.
  • the capturing of the images by the camera unit 16 is continuously or consecutively performed as indicated by a feedback loop 52.
  • the driver's attention determined on the basis of the biometric parameter is compared to a threshold level as shown at step 54 and if the threshold level is exceeded, the central processing unit 28 stores the buffered images in the storage device 30 as shown at step 56. If the driver's attention does not exceed the threshold level, the method 40 returns to step 44 as shown by the feedback loop 58. After the storage of the buffered images, the method 40 returns to step 44 as shown by the feedback loop 60.
  • the storage of the captured images is based on the biometric parameter so that the relevant images can be stored for subsequent playback.
  • the biometric parameter and/or the driver's attention may be stored together with the captured images in the storage device 30 e.g. as metadata for a subsequent review.
  • the images captured by the camera unit 16 may be stored continuously in the storage device 30 without comparing the driver's attention to the threshold level and may be stored together with the respectively determined driver's attention so that the relevant sequences of the consecutive captured images may be extracted subsequently on the basis of the additionally stored driver's attention.
  • a computer program may be stored/distributed on a suitable medium, such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems.
  • a suitable medium such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Developmental Disabilities (AREA)
  • Educational Technology (AREA)
  • Social Psychology (AREA)
  • Child & Adolescent Psychology (AREA)
  • Psychology (AREA)
  • Hospice & Palliative Care (AREA)
  • Psychiatry (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Traffic Control Systems (AREA)

Abstract

L'invention concerne un système de caméra, en particulier une caméra de tableau de bord pour un véhicule. Le système de caméra comprend une unité de caméra (16) pour capturer une pluralité d'images d'une zone entourant le véhicule, un dispositif de stockage (30) pour stocker les images capturées par l'unité de caméra, le dispositif de stockage comprenant une mémoire tampon pour capturer les images durant une trame temporelle prédéfinie, un dispositif de surveillance de conducteur (18) pour déterminer au moins un paramètre biométrique d'un conducteur (20) du véhicule, et une unité de commande (28) pour commander le stockage des images. Les images sont stockées dans le dispositif de stockage si le paramètre biométrique dépasse un niveau prédéfini.
PCT/EP2015/069535 2014-09-02 2015-08-26 Système de caméra pour un véhicule Ceased WO2016034473A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14183146 2014-09-02
EP14183146.1 2014-09-02

Publications (1)

Publication Number Publication Date
WO2016034473A1 true WO2016034473A1 (fr) 2016-03-10

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PCT/EP2015/069535 Ceased WO2016034473A1 (fr) 2014-09-02 2015-08-26 Système de caméra pour un véhicule

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018121545A1 (fr) * 2016-12-29 2018-07-05 北京奇虎科技有限公司 Procédé de compensation de temps destiné à être utilisé avec un terminal mobile embarqué, appareil et terminal mobile embarqué
US11938947B2 (en) 2022-01-05 2024-03-26 Honeywell International S.R.O. Systems and methods for sensor-based operator fatigue management

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140028848A1 (en) 2012-07-26 2014-01-30 Denso Corporation Drive video recording device and method, drive video recording system, and summarized moving image creating device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140028848A1 (en) 2012-07-26 2014-01-30 Denso Corporation Drive video recording device and method, drive video recording system, and summarized moving image creating device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018121545A1 (fr) * 2016-12-29 2018-07-05 北京奇虎科技有限公司 Procédé de compensation de temps destiné à être utilisé avec un terminal mobile embarqué, appareil et terminal mobile embarqué
US11938947B2 (en) 2022-01-05 2024-03-26 Honeywell International S.R.O. Systems and methods for sensor-based operator fatigue management

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