WO2017092098A1

WO2017092098A1 - Intelligent vehicle-mounted camera and method for adjusting frame rate thereof

Info

Publication number: WO2017092098A1
Application number: PCT/CN2015/098756
Authority: WO
Inventors: 魏党伟
Original assignee: 北京奇虎科技有限公司; 奇智软件（北京）有限公司
Priority date: 2015-12-03
Filing date: 2015-12-24
Publication date: 2017-06-08
Also published as: CN105554376A

Abstract

Disclosed are a method for adjusting a frame rate of an intelligent vehicle-mounted camera, and an intelligent vehicle-mounted camera. The method comprises: acquiring, by an intelligent vehicle-mounted camera installed in a motor vehicle, a driving speed of the motor vehicle via an on-board diagnostic system (OBD) interface; and monitoring, by the intelligent vehicle-mounted camera, a variation of the driving speed of the motor vehicle, and adjusting, according to the variation of the driving speed of the motor vehicle, a frame rate of the intelligent vehicle-mounted camera. In the above technical solution, the intelligent vehicle-mounted camera acquires driving speed information of the motor vehicle via the OBD interface, and performs the corresponding adjustment on the frame rate according to the variation of the driving speed, thereby adapting the frame rate of the intelligent vehicle-mounted camera to the driving speed of the motor vehicle in which the intelligent vehicle-mounted camera is installed so as to achieve an improved image effect, accurately recording images at each moment the motor vehicle is running, and providing a meaningful driving reference for a user.

Description

Vehicle-mounted intelligent camera device and method for adjusting camera frame rate thereof

Technical field

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.

Background technique

With the continuous development of mobile technology, the increasing number of motor vehicles and the complication of traffic conditions, the recording and processing of vehicle data by vehicle-mounted intelligent systems will become the main direction of the development of the transportation field in the future, as one of the important parts of the vehicle-mounted intelligent system. 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.

In the prior art, during the operation of the in-vehicle intelligent camera device, the driving process is continuously recorded at a constant imaging frame rate. Obviously, when the driving speed is large and the imaging frame rate of the in-vehicle intelligent camera device is small, When 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; when 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.

Summary of the invention

In view of the above problems, 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.

According to an aspect of the present invention, a method for adjusting an imaging frame rate of a vehicle-mounted smart camera device is provided, the method 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.

According to another aspect of the present invention, an in-vehicle intelligent camera device is provided, the car-mounted smart 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.

According to still another aspect of the present invention, a computer program is provided, 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.

According to still another aspect of the present invention, a computer readable medium is proposed, wherein the computer program described above is stored.

It can be seen from the above that in the technical solution provided by the present invention, 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.

The above description is only an overview of the technical solutions of the present invention, and the above-described and other objects, features and advantages of the present invention can be more clearly understood. Specific embodiments of the invention are set forth below.

DRAWINGS

Various other advantages and benefits will become apparent to those skilled in the art from a The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting. Throughout the drawings, the same reference numerals are used to refer to the same parts. In the drawing:

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.

FIG. 3 shows a schematic diagram of a vehicle-mounted smart camera device according to another embodiment of the present invention. Figure

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.

Specific embodiment

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

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.

Among them, the diagnostic line inside the on-board diagnostics (OBD) 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. In this step S110, 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.

It can be seen that, in the method shown in FIG. 1 , 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.

In an embodiment of the present invention, 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.

Then, adjusting the imaging frame rate of the in-vehicle intelligent camera device according to the change of the driving speed of the vehicle in step S120 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.

For example, divide 5 driving speed intervals (units are km/h): [0-20], [20-60], [60-90], [90-120], [120-150], respectively The five driving speed intervals are set to match the camera frame rate (units are fps): 15, 24, 25, 30, 60. In the method shown in FIG. 1 , 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].

Among them, the division of the driving speed interval includes the following cases:

In one embodiment, the interval ranges of the plurality of divided driving speed intervals are discontinuous, and adjacent driving speed intervals have the same interval interval. For example, divide 5 driving speed intervals (units are km/h): [0-20], [25-60], [65-90], [95-120], [125-150], adjacent There is an interval of 5km/h between the driving speed intervals; at this time, when the driving speed of the vehicle is gradually increased from 20km/h to 24km/h, the camera frame rate of the vehicle-mounted intelligent camera does not change until the vehicle When the driving speed continues to increase to 25km/h, 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. According to the setting of the embodiment, when 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. Within the interval, 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.

In another embodiment, 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. For example, divide 5 driving speed intervals (units are km/h): [0-20], [20-60], [60-90], [90-120], [120-150], adjacent The critical speeds of the driving speed interval are: 20km/h, 60km/h, 90km/h, 120km/h; when the vehicle-mounted intelligent camera detects that the driving speed increases gradually from 10km/h, it increases to 20km/ h, the camera frame rate remains unchanged. When it continues to increase to 25km/h, it is confirmed that the driving speed changes from the driving speed interval [0-20] to the driving speed interval [20-60], and the imaging frame rate of the vehicle-mounted smart camera device. Adjusted to the frame rate that is compatible with the speed interval [20-60]. 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.

In addition, in some cases, for example, 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. Insignificant use, in one embodiment of the present invention, the determining the driving speed from one driving speed interval to the adjacent another driving speed interval includes:

Determining the driving speed from a driving speed interval when it is detected that the driving speed changes from one driving speed interval to another adjacent driving speed interval and the time that is stable in the other driving speed interval exceeds a second preset threshold Change to another adjacent speed range.

In the above example, 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. In this embodiment, 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.

In an embodiment of the present invention, 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.

In an embodiment of the present invention, 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.

2 shows a schematic diagram of a vehicle-mounted smart camera device in accordance with one embodiment of the present invention. As shown in FIG. 2, 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.

It can be seen that 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. As shown in FIG. 3, 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.

In an embodiment of the present invention, 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.

In another embodiment of the present invention, 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.

In an embodiment of the invention, 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.

For an in-vehicle smart camera device shown in FIG. 2 to FIG. 3, in an embodiment of the present invention, 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. And, in an embodiment of the present invention, 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.

In one embodiment of the present invention, 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.

It should be noted that the embodiments of the in-vehicle intelligent camera device shown in FIG. 2 to FIG. 3 are the same as the embodiments of the method shown in FIG. 1 and have been described in detail above, and are not described herein again.

In summary, in the technical solution provided by the present invention, 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.

It should be noted:

The algorithms and displays provided herein are not inherently related to any particular computer, virtual device, or other device. Various general purpose devices can also be used with the teaching based on the teachings herein. The structure required to construct such a device is apparent from the above description. Moreover, the invention is not directed to any particular programming language. It is to be understood that the invention may be embodied in a variety of programming language, and the description of the specific language has been described above in order to disclose the preferred embodiments of the invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that the embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of the description.

Similarly, the various features of the invention are sometimes grouped together into a single embodiment, in the above description of the exemplary embodiments of the invention, Figure, or a description of it. However, the method disclosed is not to be interpreted as reflecting the intention that the claimed invention requires more features than those recited in the claims. Rather, as the following claims reflect, inventive aspects reside in less than all features of the single embodiments disclosed herein. Therefore, the claims following the specific embodiments are hereby explicitly incorporated into the embodiments, and each of the claims as a separate embodiment of the invention.

Those skilled in the art will appreciate that the 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. In addition to such features and/or at least some of the processes or units being mutually exclusive, 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.

In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features that are included in other embodiments and not in other features, combinations of features of different embodiments are intended to be within the scope of the present invention. Different embodiments are formed and formed. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

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. Those skilled in the art will appreciate that a microprocessor or digital signal processor (DSP) 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. Such 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.

For example, 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. For example, 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. Typically, 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.

It is to be noted that the above-described embodiments are illustrative of the invention and are not intended to be limiting, and that the invention may be devised without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as a limitation. The word "comprising" does not exclude the presence of the elements or steps that are not recited in the claims. The word "a" or "an" The invention can be implemented by means of hardware comprising several distinct elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means can be embodied by the same hardware item. The use of the words first, second, and third does not indicate any order. These words can be interpreted as names.

In addition, it should be noted that the language used in the specification has been selected for the purpose of readability and teaching, and is not intended to be construed or limited. Therefore, many modifications and changes will be apparent to those skilled in the art without departing from the scope of the invention. The disclosure of the present invention is intended to be illustrative, and not restrictive, and the scope of the invention is defined by the appended claims.

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. Generally, 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. In a distributed cloud computing environment, program modules may be located on a local or remote computing system storage medium including storage devices.

"an embodiment," or "an embodiment," or "an embodiment," In addition, it is noted that the phrase "in one embodiment" is not necessarily referring to the same embodiment.

Claims

A method for adjusting an imaging frame rate of a vehicle-mounted smart camera device, wherein the method comprises:

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.
The method of claim 1, wherein the method further comprises: dividing a plurality of driving speed intervals, and setting a suitable imaging frame rate for each driving speed interval;

The adjusting the imaging frame rate of the in-vehicle intelligent camera device according to the change of the driving speed of the vehicle includes: when determining that the driving speed changes from one driving speed interval to another adjacent driving speed interval, the in-vehicle intelligent camera device will capture the imaging frame. The rate is adjusted to an imaging frame rate that is adapted to the other driving speed interval.
The method of claim 2, wherein the interval ranges of the plurality of driving speed intervals are discontinuous, and adjacent driving speed intervals have the same interval interval.
The method of claim 2, wherein the interval ranges of the plurality of driving speed intervals are continuous, and the adjacent driving speed intervals have a common critical driving speed;

Then determining the driving speed from one driving speed interval to another adjacent driving speed interval includes:

Determining the driving speed from a driving when it is detected that the driving speed changes 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 speed interval changes to another adjacent driving speed interval.
The method of claim 2 wherein said determining a driving speed to change from one driving speed interval to an adjacent another driving speed interval comprises:

Determining the driving speed from a driving speed interval when it is detected that the driving speed changes from one driving speed interval to another adjacent driving speed interval and the time that is stable in the other driving speed interval exceeds a second preset threshold Change to another adjacent speed range.
The method of claim 1 wherein the method further comprises:

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 in-vehicle smart camera device.
The method of claim 1 wherein the method further comprises:

When the driving speed is zero, the on-board smart camera also passes the on-board diagnostic system interface. Get the door status;

When the door state is the off state, the onboard smart camera turns off the display and remains in the standby state.
An in-vehicle intelligent camera device, wherein the in-vehicle smart camera device comprises:

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, and adjust the imaging frame rate of the onboard intelligent camera according to the change of the driving speed of the vehicle.
The in-vehicle smart camera device according to claim 8, wherein the in-vehicle smart camera device further comprises: a pre-processing unit;

The pre-processing unit is adapted to divide a plurality of driving speed intervals, and set a matching imaging frame rate for each driving speed interval;

And the adjusting unit is adapted to adjust the imaging frame rate to an imaging frame rate adapted to the another driving speed interval when determining that the driving speed changes from one driving speed interval to another adjacent driving speed interval .
The in-vehicle smart camera device according to claim 9, wherein

The range of the plurality of driving speed intervals divided by the pre-processing unit is discontinuous, and the adjacent driving speed intervals have the same interval interval.
The in-vehicle smart camera device according to claim 9, wherein

The range of the plurality of driving speed intervals divided by the pre-processing unit is continuous, and the adjacent driving speed intervals have a common critical driving speed;

The adjusting unit is adapted to detect that the difference between the driving speed from one driving speed interval to another adjacent driving speed interval and the critical driving speed shared by the two driving speed intervals exceeds the first preset threshold When it is determined, the driving speed is changed from one driving speed interval to another adjacent driving speed interval.
The in-vehicle smart camera device according to claim 9, wherein

The adjusting unit is adapted to determine when the driving speed is changed from one driving speed interval to another adjacent driving speed interval, and the time that is stable in the another driving speed interval exceeds a second preset threshold The driving speed is changed from one driving speed interval to another adjacent driving speed interval.
The in-vehicle smart camera device according to claim 8, wherein

The adjusting unit is further adapted to reduce the resolution of each frame image according to the processing speed of the graphics processing chip in the onboard smart camera device when the camera frame rate is increased.
The in-vehicle smart camera device according to claim 8, wherein

The adjusting unit is further adapted to acquire a door state through the onboard diagnostic system interface when the driving speed is zero, and to close the display and maintain the standby state when the door state is the closed state.
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 of any of claims 1-7 The method of adjusting the camera frame rate.
A computer readable medium storing the computer program of claim 15.