WO2017092098A1 - Caméra montée dans un véhicule intelligent et procédé pour régler la fréquence de trames de cette dernière - Google Patents

Caméra montée dans un véhicule intelligent et procédé pour régler la fréquence de trames de cette dernière Download PDF

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Publication number
WO2017092098A1
WO2017092098A1 PCT/CN2015/098756 CN2015098756W WO2017092098A1 WO 2017092098 A1 WO2017092098 A1 WO 2017092098A1 CN 2015098756 W CN2015098756 W CN 2015098756W WO 2017092098 A1 WO2017092098 A1 WO 2017092098A1
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WO
WIPO (PCT)
Prior art keywords
driving speed
vehicle
interval
camera device
frame rate
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PCT/CN2015/098756
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English (en)
Chinese (zh)
Inventor
魏党伟
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北京奇虎科技有限公司
奇智软件（北京）有限公司
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Application filed by 北京奇虎科技有限公司, 奇智软件（北京）有限公司 filed Critical 北京奇虎科技有限公司
Publication of WO2017092098A1 publication Critical patent/WO2017092098A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/95—Computational photography systems, e.g. light-field imaging systems
    • H04N23/951—Computational photography systems, e.g. light-field imaging systems by using two or more images to influence resolution, frame rate or aspect ratio
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data

Definitions

  • the present invention relates to the field of in-vehicle intelligent devices, and in particular to a method for adjusting an imaging frame rate of an in-vehicle intelligent camera device and a vehicle-mounted smart camera device.
  • the vehicle-mounted intelligent camera device has become a hot spot in current research.
  • the vehicle-mounted intelligent camera device can help the driver to record the driving situation in real time, and can restore the driving state at each moment when necessary, as a driving reference.
  • the driving process is continuously recorded at a constant imaging frame rate.
  • the driving speed is large and the imaging frame rate of the in-vehicle intelligent camera device is small.
  • the vehicle-mounted smart camera records a frame of image
  • the current vehicle has traveled a long distance, resulting in the lack of a large amount of driving data;
  • the driving speed is small and the camera frame rate of the vehicle-mounted smart camera device is large, within a certain period of time
  • the current vehicle position hardly changes and the in-vehicle smart camera has recorded a large number of frame images, and the frame images of the large amount of data are almost identical to each other; in either case, the recorded on-board smart camera device is recorded.
  • the data loses its meaning.
  • the present invention has been made in order to provide an adjustment method of an imaging frame rate of an in-vehicle intelligent camera device that overcomes the above problems or at least partially solves the above problems, and a vehicle-mounted smart camera device.
  • a method for adjusting an imaging frame rate of a vehicle-mounted smart camera device comprising:
  • the vehicle-mounted intelligent camera set on the motor vehicle obtains the driving speed of the vehicle through the on-board diagnostic system interface;
  • the in-vehicle intelligent camera device monitors the change of the driving speed of the vehicle, and adjusts the imaging frame rate of the in-vehicle intelligent camera device according to the change of the driving speed of the vehicle.
  • an in-vehicle intelligent camera device comprising:
  • the obtaining unit is adapted to obtain the driving speed of the vehicle through the on-board diagnostic system interface
  • the adjusting unit is adapted to monitor the change of the driving speed of the vehicle by the vehicle-mounted intelligent camera device, and adjust the camera frame rate of the vehicle-mounted smart camera device according to the change of the driving speed of the vehicle.
  • a computer program comprising computer readable code that, when executed on a computing device, causes the computing device to perform the onboard smart camera device described above The method of adjusting the camera frame rate.
  • a computer readable medium wherein the computer program described above is stored.
  • the vehicle-mounted intelligent camera device acquires the driving speed information of the vehicle through the OBD interface, and adjusts the camera frame rate according to the change of the driving speed, so that the camera frame of the vehicle-mounted smart camera device is adjusted.
  • the rate is matched with the driving speed of the motor vehicle where the current vehicle-mounted smart camera device is located, in order to obtain a better camera effect, accurately record the driving picture of the motor vehicle at various moments, and provide a more meaningful driving reference for the user.
  • FIG. 1 is a flow chart showing a method for adjusting an imaging frame rate of a vehicle-mounted smart camera device according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a vehicle-mounted smart camera device according to an embodiment of the invention.
  • FIG. 3 shows a schematic diagram of a vehicle-mounted smart camera device according to another embodiment of the present invention.
  • Figure 4 shows schematically a block diagram of a computing device for performing the method according to the invention
  • Fig. 5 schematically shows a storage unit for holding or carrying program code implementing the method according to the invention.
  • FIG. 1 is a flow chart showing a method for adjusting an imaging frame rate of a vehicle-mounted smart camera device according to an embodiment of the present invention. As shown in Figure 1, the method includes:
  • Step S110 The onboard intelligent camera set on the motor vehicle acquires the driving speed of the vehicle through the onboard diagnostic system interface.
  • the diagnostic line inside the on-board diagnostics is connected to the engine control unit of the motor vehicle, and can read the information fed back by the engine and other controllers of the motor vehicle.
  • a relatively real-time, accurate, and highly reference driving speed information is obtained through the OBD interface.
  • Step S120 The in-vehicle intelligent camera device monitors the change of the driving speed of the vehicle, and adjusts the imaging frame rate of the in-vehicle intelligent camera device according to the change of the driving speed of the vehicle.
  • the vehicle-mounted intelligent camera device acquires the driving speed information of the vehicle through the OBD interface, and adjusts the camera frame rate according to the change of the driving speed, so that the camera frame rate of the vehicle-mounted smart camera device is At present, the driving speed of the motor vehicle where the in-vehicle intelligent camera device is located is adapted to achieve a better imaging effect, accurately record the driving picture of the motor vehicle at various moments, and provide a more meaningful driving reference for the user.
  • the method shown in FIG. 1 further includes: dividing a plurality of driving speed intervals, and setting a suitable imaging frame rate for each driving speed interval.
  • adjusting the imaging frame rate of the in-vehicle intelligent camera device includes: when determining that the driving speed of the vehicle changes from one driving speed interval to the adjacent another In the driving speed interval, the vehicle-mounted smart camera adjusts the imaging frame rate to an imaging frame rate that is compatible with the other driving speed interval.
  • the vehicle-mounted intelligent camera acquires the driving speed of the vehicle through the OBD interface, and when determining the driving speed of the vehicle changes from 10 km/h to 40 km/h, that is, from the driving speed interval [0- 20] Change to another adjacent driving speed interval [20-60], and the vehicle-mounted smart camera adjusts the imaging frame rate to an imaging frame rate of 24 fps that is compatible with the driving speed interval [20-60].
  • the division of the driving speed interval includes the following cases:
  • the interval ranges of the plurality of divided driving speed intervals are discontinuous, and adjacent driving speed intervals have the same interval interval.
  • divide 5 driving speed intervals (units are km/h): [0-20], [25-60], [65-90], [95-120], [125-150], adjacent
  • the camera frame rate of the vehicle-mounted smart camera is adjusted from the camera frame rate corresponding to [0-20] to the camera frame rate corresponding to [25-60]; when the vehicle's driving speed is When the frequency is gradually increased from 20km/h to 24km/h, and from 24km/h to 20km/h, the camera frame rate of the vehicle-mounted smart camera device remains unchanged.
  • the driving speed of the vehicle is unstable and repeated, such as changing from a driving speed interval to the driving speed interval
  • the driving speed is changed from the driving speed interval to the driving speed.
  • the camera frame rate of the in-vehicle intelligent camera device does not undergo an unstable repeated adjustment at any time, that is, the interval interval between the divided driving speed intervals provides a criterion for determining whether the driving speed enters the driving speed interval, that is, exceeds the standard.
  • the change of the driving speed of the interval interval is regarded as the change from one driving speed interval to the adjacent driving speed interval, and the imaging frame rate of the vehicle-mounted intelligent camera device is adjusted according to the change to avoid the driving speed in a short time.
  • the camera frame rate caused by irregular changes within the adjustment is repeated in a short time.
  • the range of the plurality of driving speed intervals is continuous, and the adjacent driving speed intervals have a common critical driving speed; and the determining the driving speed changes from one driving speed interval to the adjacent one.
  • Another driving speed interval includes: when monitoring the driving speed from When a driving speed interval changes to another adjacent driving speed interval and the difference between the critical driving speeds shared by the two driving speed intervals exceeds a first preset threshold, determining the driving speed changes from one driving speed interval to adjacent Another driving speed range.
  • the setting of the first preset threshold in the embodiment provides a criterion for determining whether the driving speed enters the driving speed interval, that is, the driving speed is regarded as a relatively stable change when the difference from the critical driving speed exceeds the first preset threshold.
  • the camera frame rate of the vehicle-mounted smart camera device is adjusted to the corresponding driving speed interval to avoid repeated adjustment of the camera frame rate caused by irregular changes in the driving speed in a short time.
  • the driving speed of the vehicle continues to increase from 10 km/h to 80 km/h, and during the increase of the driving speed, the driving speed sequentially passes through three driving speed intervals [0-20] [20-60], [60-90], in the case of a large acceleration, the driving speed of the vehicle stays in the middle driving speed range [20-60] for a very short time, it is easy to know, at this pole In a short period of time, the adjustment of the camera frame rate of the vehicle-mounted smart camera device is meaningless for the acceleration process of the vehicle from 10 km/h to 80 km/h. To solve this problem, the control resources of the vehicle-mounted smart camera device are avoided.
  • the determining the driving speed from one driving speed interval to the adjacent another driving speed interval includes:
  • the vehicle smart camera only when the driving speed of the vehicle stays in the middle driving speed interval [20-60] exceeds the second preset threshold, if the time staying in the speed interval exceeds 30 s, the vehicle smart camera will be mounted.
  • the camera frame rate of the device is adjusted to a frame rate that is adapted to the driving speed interval.
  • the second preset threshold is used to determine whether the stopping speed of the driving speed in a driving speed interval is meaningful, and the meaningful stay in a driving speed interval makes the in-vehicle smart camera device The camera frame rate is adjusted accordingly.
  • the method shown in FIG. 1 further includes: when the vehicle-mounted smart camera device increases the imaging frame rate, the resolution of each frame image is correspondingly reduced according to the processing speed of the graphics processing chip in the vehicle-mounted smart camera device. In order to reduce the processing pressure on the image processing chip and increase the processing speed.
  • the method shown in FIG. 1 further includes: when the driving speed is zero, the in-vehicle smart camera device also acquires the door state through the onboard diagnostic system interface; when the door state is off When it is detected that the current state of the vehicle is the parking state, the on-board smart camera turns off the display and remains in the standby state.
  • the in-vehicle smart camera device 200 includes:
  • the obtaining unit 210 is adapted to obtain the driving speed of the vehicle through the on-board diagnostic system interface.
  • the adjusting unit 220 is adapted to monitor the change of the driving speed of the vehicle by the in-vehicle intelligent camera device, and adjust the imaging frame rate of the in-vehicle intelligent camera device according to the change of the driving speed of the vehicle.
  • the vehicle-mounted intelligent camera device shown in FIG. 2 acquires the driving speed information of the vehicle through the OBD interface, and adjusts the camera frame rate according to the change of the driving speed, so that the camera frame rate of the vehicle-mounted smart camera device and the current vehicle-mounted smart camera.
  • the driving speed of the motor vehicle where the device is located is adapted to achieve a better imaging effect, accurately record the driving picture of the motor vehicle at various moments, and provide a more meaningful driving reference for the user.
  • FIG. 3 shows a schematic diagram of a vehicle-mounted smart camera device according to another embodiment of the present invention.
  • the in-vehicle smart camera device 300 includes:
  • the pre-processing unit 310 is adapted to divide a plurality of driving speed intervals, and set an appropriate imaging frame rate for each driving speed interval.
  • the obtaining unit 320 is adapted to obtain the driving speed of the vehicle through the on-board diagnostic system interface.
  • the adjusting unit 330 is adapted to monitor the change of the driving speed of the vehicle, and adjust the imaging frame rate of the vehicle-mounted smart camera according to the change of the driving speed of the vehicle; specifically, when it is determined that the driving speed is changed from a driving speed interval to a phase When another driving speed interval is adjacent, the imaging frame rate is adjusted to an imaging frame rate that is compatible with the other driving speed interval.
  • the range of the plurality of driving speed intervals divided by the pre-processing unit 310 is discontinuous, and the adjacent driving speed intervals have the same interval interval.
  • the range of the plurality of driving speed intervals divided by the pre-processing unit 310 is continuous, and the adjacent driving speed intervals have a common critical driving speed; then the adjusting unit 330 is adapted to be The driving speed is determined from a driving speed when the driving speed is changed from one driving speed interval to another adjacent driving speed interval, and the difference between the critical driving speeds shared by the two driving speed intervals exceeds the first preset threshold The interval changes to another adjacent driving speed interval.
  • the adjusting unit 330 is adapted to exceed the time when the driving speed is changed from one driving speed interval to another adjacent driving speed interval and is stable in the other driving speed interval. At the second predetermined threshold, it is determined that the driving speed changes from one driving speed interval to another adjacent driving speed interval.
  • the adjusting unit 220/330 is further adapted to the in-vehicle smart camera device, according to the vehicle-mounted smart camera device, when the camera frame rate is increased.
  • the processing speed of the graphics processing chip in the corresponding one reduces the resolution of each frame of image.
  • the adjusting unit 220/330 is further adapted to acquire a door state through the onboard diagnostic system interface when the driving speed is zero, and close when the door state is in the closed state. The display remains in standby.
  • the in-vehicle intelligent camera device 200/300 shown in FIG. 2 to FIG. 3 may be an in-vehicle intelligent device such as a driving recorder or a car smart rearview mirror to record and monitor the driving situation.
  • the vehicle-mounted intelligent camera device acquires the driving speed information of the vehicle through the OBD interface, and adjusts the camera frame rate according to the change of the driving speed, so that the camera of the vehicle-mounted smart camera device is obtained.
  • the frame rate is adapted to the driving speed of the motor vehicle where the current in-vehicle smart camera device is located, and by setting the driving speed interval in advance, setting the imaging frame rate suitable for each driving speed interval, and driving speed from one driving.
  • the setting of the criterion for changing the speed interval to the validity of another driving speed interval enables the in-vehicle intelligent camera device to obtain a better imaging effect, accurately record the driving picture of the motor vehicle at various times, and provide more meaningful to the user.
  • Driving reference is adapted to the driving speed of the motor vehicle where the current in-vehicle smart camera device is located, and by setting the driving speed interval in advance, setting the imaging frame rate suitable for each driving speed interval, and driving speed from one driving.
  • modules in the apparatus of the embodiments can be adaptively changed and placed in one or more different devices than the embodiment.
  • the modules or units or components of the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of sub-modules or sub-units or sub-components.
  • any combination of the features disclosed in the specification, including the accompanying claims, the abstract and the drawings, and any methods so disclosed, or All processes or units of the device are combined.
  • Each feature disclosed in this specification (including the accompanying claims, the abstract and the drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.
  • the various component embodiments of the present invention may be implemented in hardware, or in a software module running on one or more processors, or in a combination thereof.
  • a microprocessor or digital signal processor may be used in practice to implement some or all of the functionality of some or all of the components of an in-vehicle smart camera device in accordance with an embodiment of the present invention.
  • the invention can also be implemented as a device or device program (e.g., a computer program and a computer program product) for performing some or all of the methods described herein.
  • a program implementing the invention may be stored on a computer readable medium or may be in the form of one or more signals. Such signals may be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.
  • Figure 4 schematically illustrates a block diagram of a computing device for performing the method in accordance with the present invention.
  • the computing device conventionally includes a processor 410 and a computer program product or computer readable medium in the form of a memory 420.
  • the memory 420 may be an electronic memory such as a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), an EPROM, a hard disk, or a ROM.
  • Memory 420 has a memory space 430 for program code 431 for performing any of the method steps described above.
  • storage space 430 for program code may include various program code 431 for implementing various steps in the above methods, respectively.
  • the program code can be read from or written to one or more computer program products.
  • These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks.
  • Such computer program products are typically portable or fixed storage units as described with reference to FIG.
  • the storage unit may have storage segments, storage spaces, and the like that are similarly arranged to memory 420 in the computing device of FIG.
  • the program code can be compressed, for example, in an appropriate form.
  • the storage unit comprises computer readable code 431' for performing the steps of the method according to the invention, ie code that can be read by a processor, such as 410, which, when executed by the computing device, causes the calculation The device performs the various steps in the methods described above.
  • the present invention is applicable to computer systems/servers that can operate with numerous other general purpose or special purpose computing system environments or configurations.
  • Examples of well-known computing systems, environments, and/or configurations suitable for use with computer systems/servers include, but are not limited to, personal computer systems, server computer systems, thin clients, thick clients, handheld or laptop devices, based on Microprocessor systems, set-top boxes, programmable consumer electronics, networked personal computers, small computer systems, mainframe computer systems, and distributed cloud computing technology environments including any of the above, and the like.
  • the computer system/server can be described in the general context of computer system executable instructions (such as program modules) being executed by a computer system.
  • program modules may include routines, programs, target programs, components, logic, data structures, and the like that perform particular tasks or implement particular abstract data types.
  • the computer system/server can be implemented in a distributed cloud computing environment where tasks are performed by remote processing devices that are linked through a communication network.
  • program modules may be located on a local or remote computing system storage medium including storage devices.

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  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

L'invention concerne un procédé pour régler une fréquence de trames d'une caméra montée dans un véhicule intelligent, et une caméra montée dans un véhicule intelligent. Le procédé consiste : à acquérir, par une caméra montée dans un véhicule intelligent installée dans un véhicule à moteur, une vitesse de conduite du véhicule à moteur par l'intermédiaire d'une interface de système de diagnostic embarqué (OBD) ; et à surveiller, par la caméra montée dans un véhicule intelligent, une variation de la vitesse de conduite du véhicule à moteur, et à régler, selon la variation de la vitesse de conduite du véhicule à moteur, une fréquence de trames de la caméra montée dans un véhicule intelligent. Dans la solution technique ci-dessus, la caméra montée dans un véhicule intelligent acquiert des informations de vitesse de conduite du véhicule à moteur par l'intermédiaire de l'interface OBD, et réalise le réglage correspondant sur la fréquence de trames selon la variation de la vitesse de conduite, permettant ainsi d'adapter la fréquence de trames de la caméra montée dans un véhicule intelligent à la vitesse de conduite du véhicule à moteur dans lequel la caméra montée dans un véhicule intelligent est installée de façon à obtenir un effet d'image amélioré, d'enregistrer de manière précise des images à chaque moment où le véhicule à moteur est en marche, et de fournir une référence de conduite significative pour un utilisateur.
PCT/CN2015/098756 2015-12-03 2015-12-24 Caméra montée dans un véhicule intelligent et procédé pour régler la fréquence de trames de cette dernière WO2017092098A1 (fr)

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CN201510884912.4A CN105554376A (zh) 2015-12-03 2015-12-03 一种车载智能摄像装置及其摄像帧率的调节方法
CN201510884912.4 2015-12-03

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CN113096406A (zh) * 2019-12-23 2021-07-09 深圳云天励飞技术有限公司 车辆信息获取方法、装置及电子设备
CN114220267A (zh) * 2021-12-15 2022-03-22 同济大学 一种基于车辆obd的道路拍摄方法及系统
WO2023225791A1 (fr) * 2022-05-23 2023-11-30 广东逸动科技有限公司 Procédé et appareil d'ajustement de fréquence d'image de caméra, dispositif électronique et support de stockage

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DE102017205077B4 (de) * 2017-03-27 2021-09-30 Ford Global Technologies, Llc Verfahren und Vorrichtung zum Reduzieren einer Zeitspanne für eine Adaption der Augen eines Fahrers eines Kraftfahrzeuges bei einem Blickrichtungswechsel
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CN111739193B (zh) * 2020-06-17 2021-12-17 重庆蓝岸通讯技术有限公司 一种行车记录仪图像显示方法及行车记录仪
CN113422902B (zh) * 2021-05-31 2023-01-06 惠州华阳通用电子有限公司 一种摄像头帧率调节方法
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CN113096406B (zh) * 2019-12-23 2022-07-26 深圳云天励飞技术有限公司 车辆信息获取方法、装置及电子设备
CN114220267A (zh) * 2021-12-15 2022-03-22 同济大学 一种基于车辆obd的道路拍摄方法及系统
WO2023225791A1 (fr) * 2022-05-23 2023-11-30 广东逸动科技有限公司 Procédé et appareil d'ajustement de fréquence d'image de caméra, dispositif électronique et support de stockage

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