CN114827485A - Light supplementing method and system for vehicle camera - Google Patents
Light supplementing method and system for vehicle camera Download PDFInfo
- Publication number
- CN114827485A CN114827485A CN202210439001.0A CN202210439001A CN114827485A CN 114827485 A CN114827485 A CN 114827485A CN 202210439001 A CN202210439001 A CN 202210439001A CN 114827485 A CN114827485 A CN 114827485A
- Authority
- CN
- China
- Prior art keywords
- vehicle
- preset
- control signal
- image
- light
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000001502 supplementing effect Effects 0.000 title abstract description 22
- 239000013589 supplement Substances 0.000 claims abstract description 97
- 238000005286 illumination Methods 0.000 claims description 75
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004590 computer program Methods 0.000 description 4
- 230000002085 persistent effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/085—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
Abstract
The application relates to a light supplementing method and system for a vehicle camera. The method comprises the following steps: acquiring external information required by vehicle camera light supplement, and generating a first control signal according to the external information, wherein the external information comprises vehicle running ambient brightness information and vehicle running speed; receiving an image shot according to the first control signal for light supplement, comparing the image with a preset image, and generating a second control signal according to a comparison result; and controlling the vehicle lamp to increase the light supplement amount of the camera according to the second control signal. According to the scheme, dynamic adjustment can be performed on the camera light supplement according to the ambient brightness information of the vehicle running environment, the vehicle running speed and the image quality of the image shot by the camera.
Description
Technical Field
The application relates to the technical field of automatic driving, in particular to a light supplementing method and system for a vehicle camera.
Background
The automatic driving vehicle relies on the camera to realize road surface recognition, and the camera is equivalent to the eyes of automatic driving vehicle, and the camera need use the car light at night to throw light on and the light filling, but causes the camera to expose inadequately or expose excessively easily among the conventional car light system lighting process to influence road surface recognition effect and further influence the normal driving of automatic driving vehicle.
In order to improve the light supplement problem of the camera in the automatic driving process, the vehicle lamp is generally adopted to supplement light for the camera in the prior art, but the brightness of the existing vehicle lamp system cannot be dynamically adjusted along with the ambient brightness condition and the vehicle speed condition.
Disclosure of Invention
In order to solve or partially solve the problems in the related art, the application provides a light supplementing method and system for a vehicle camera, which can dynamically supplement light for the vehicle camera.
The application provides a light supplement method for a vehicle camera in a first aspect, which includes:
acquiring external information required by vehicle camera light supplement, and generating a first control signal according to the external information, wherein the external information comprises vehicle running ambient brightness information and vehicle running speed;
receiving an image shot according to the first control signal for light supplement, comparing the image with a preset image, and generating a second control signal according to a comparison result;
and controlling the vehicle lamp to increase the light supplement amount of the camera according to the second control signal.
Optionally, the collecting external information required by the camera light supplement and generating a first control signal according to the external information includes:
generating a light supplement grade according to the illumination intensity and a preset illumination intensity range;
adjusting the light supplement grade and generating a first control signal according to the vehicle running speed and the preset vehicle speed;
when the vehicle running speed is higher than the preset vehicle speed, the light supplement grade is increased to generate a first control signal;
and reducing the light supplement grade to generate a first control signal under the condition that the running speed of the vehicle is less than the preset vehicle speed.
Optionally, before generating the supplementary lighting level according to the ambient brightness information and the preset lighting intensity range, the method includes:
setting N groups of preset environment illumination values according to the preset illumination intensity range;
and acquiring lighting power which is in one-to-one correspondence with the N groups of preset environment illumination ranges, wherein the lighting power is used for providing lighting within the preset illumination intensity range for the vehicle lamp, and N is a positive integer.
Optionally, receiving an image captured according to the first control signal, comparing the image with a preset image, and generating a second control signal according to a comparison result, includes:
receiving an image and extracting a color temperature value of the image;
acquiring a preset color temperature value of a preset image, comparing the color temperature value of the image with the preset color temperature value of the preset image, and acquiring a comparison result;
and under the condition that the comparison result does not conform to the color temperature value difference, adjusting the light supplement grade corresponding to the first control signal, and generating a second control signal according to the adjusted light supplement grade.
The second aspect of the present application provides a light supplement system for a vehicle camera, including:
the photosensitive sensor is used for acquiring the ambient brightness information of the running vehicle to generate an ambient light signal;
the speed sensor is used for measuring the running speed of the vehicle to generate a vehicle speed pulse signal;
the control unit MCU is used for receiving the ambient light signal, the vehicle speed pulse signal and the shot image and generating a vehicle lamp control signal;
and the driving circuit is used for controlling the car lamp to realize the light supplement of the car lamp camera according to the car lamp control signal.
Optionally, the vehicle lamp control signal includes a first control signal and a second control signal, the control unit MCU includes a first signal module and a second signal module, and the first module is configured to generate a first control signal according to the ambient light signal and the vehicle speed pulse signal; the second control module is used for receiving the image shot according to the first control signal light supplement, comparing the image with a preset image and generating a second control signal according to a comparison result.
Optionally, the first module is configured to generate a first control signal according to the ambient light signal and the vehicle speed pulse signal, and includes;
the first module acquires illumination intensity according to the ambient light signal, and generates a light supplement grade according to the light intensity and a preset illumination intensity range;
the first module obtains the vehicle running speed according to the vehicle speed pulse signal, and adjusts the light supplement grade according to the vehicle running speed and the preset vehicle speed to generate a first control signal;
the first module is used for enhancing the light supplement grade to generate a first control signal when the vehicle running speed is higher than the preset vehicle speed;
the first module reduces the light supplement grade to generate a first control signal when the vehicle running speed is lower than the preset vehicle speed.
Optionally, the control unit MCU has a preset illumination intensity range stored therein, and before generating the light supplement level according to the ambient brightness information and the preset illumination intensity range, the control unit MCU includes:
setting N groups of preset environment illumination values according to the preset illumination intensity range;
and acquiring lighting power which is in one-to-one correspondence with the N groups of preset environment illumination ranges, wherein the lighting power is used for providing lighting within the preset illumination intensity range for the vehicle lamp, and N is a positive integer.
A third aspect of the present application provides an electronic device comprising:
a processor; and
a memory having executable code stored thereon, which when executed by the processor, causes the processor to perform the method as above.
A fourth aspect of the present application provides a computer readable storage medium having stored thereon executable code, which when executed by a processor of an electronic device, causes the processor to perform the method as above.
The technical scheme provided by the application can comprise the following beneficial effects: on one hand, the application provides a light supplement method for a vehicle camera, which can realize dynamic adjustment of the camera light supplement according to the ambient brightness information of the vehicle running environment, the vehicle running speed and the image quality of the image shot by the camera. On the other hand, the application also provides a light supplementing system of the vehicle camera, the system can be communicated with a vehicle domain controller, the output of the comprehensive domain controller works, the light supplementing system comprises a photosensitive sensor, and the brightness of the vehicle lamp can be adaptively adjusted according to the ambient brightness information, so that the optimal light supplementing effect is provided for the camera; the light supplementing system is provided with a speed sensor, the brightness of the vehicle lamp can be adjusted in a self-adaptive mode according to the speed of the vehicle, so that the best light supplementing effect is provided for the camera, the light supplementing system can further adjust the vehicle lamp control signal according to the image quality and color of the received image according to the image quality information of the received image, and the light supplementing of the vehicle camera is achieved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a schematic diagram of a control device of a vehicle lamp in the prior art according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a light supplement method for a vehicle camera according to an embodiment of the present disclosure;
fig. 3 is another schematic flow chart of a light supplement method for a vehicle camera according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a light supplement system of a vehicle camera according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device shown in an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The camera sensor is an important component of an automatic driving vehicle sensing system, and one automatic driving vehicle is provided with a plurality of camera sensors. The camera sensor is equivalent to the eyes of an automatic driving vehicle, senses road surface information for the automatic driving vehicle, and can help the automobile to realize the visual observation capability with the same effect as that of a human driver. The camera sensor belongs to an optical device, the imaging effect depends on the ambient brightness, and if the ambient brightness is higher or lower, the imaging effect of the camera is influenced, so that the automatic driving road surface identification is influenced. When the automatic driving vehicle runs at night, the vehicle lamp is required to be used for supplementing light for the camera, but the brightness of the existing vehicle lamp system cannot be dynamically adjusted along with the ambient brightness condition and the vehicle speed condition.
Fig. 1 is a schematic diagram of a control device of an existing automobile lamp, only one single on-off control switch is used for controlling the automobile lamp, when the switch is closed, the automobile lamp is turned on, light can be supplemented for a camera, and when the switch is turned off, the automobile lamp is turned off. In the vehicle speed adjusting process, the exposure time of the camera to the same road surface changes along with the change of the vehicle speed. When the vehicle speed is fast, the time for the camera to shoot the picture on the same road surface is short (equivalent to the short exposure time), and at the moment, if the picture shot by the camera on the dark road surface is insufficient, the light needs to be supplemented to the road surface. When the vehicle speed is slow, the time for the camera to shoot the picture on the same road surface is long (equivalent to the lengthening of the exposure time), and at the moment, if the road surface is brighter at night, the picture shot by the camera is overexposed, so that the light supplement operation on the road surface needs to be reduced. Therefore, the existing vehicle lamp system of the vehicle cannot well support the night automatic driving function, and the camera light supplement system of the automatic driving vehicle needs to have the capability of self-adapting and dynamically adjusting the brightness.
In order to solve the above problem, an embodiment of the present application provides a light supplement method for a vehicle camera, which can implement dynamic light supplement for the vehicle camera.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 2 is a schematic flow chart of a light supplement method for a vehicle camera according to an embodiment of the present disclosure, where the method is applied to a control unit MCU of a light supplement system. And the Control unit MCU (micro Control unit) is used for receiving the measurement information of different sensors and/or different Control signals to perform corresponding data processing.
Referring to fig. 2, the light supplement method for the vehicle camera includes steps S201 to S203.
S201, acquiring external information required by vehicle camera light supplement, and generating a first control signal according to the external information, wherein the external information comprises vehicle running ambient brightness information and vehicle running speed.
Ambient light information is typically measured by a light sensitive sensor, vehicle speed is typically measured by a speed sensor, typically an IMU speed sensor.
As shown in fig. 3, step S201 acquires external information required for light supplement of a vehicle camera, and generates a first control signal according to the external information, including step S301 and step S302, specifically:
step S301, generating a supplementary lighting grade according to the ambient brightness information and the preset lighting intensity range.
In step S301, before generating a light supplement level according to the ambient brightness information and the preset illumination intensity range, the method includes: setting N groups of preset environment illumination values according to the preset illumination intensity range; and obtaining lighting power which is in one-to-one correspondence with the N groups of preset environment illumination ranges, wherein the lighting power is used for providing lighting within the preset illumination intensity range for the vehicle lamp, and N is a positive integer.
Step 301 is to compare the ambient brightness information with a preset ambient illuminance value, and when the ambient brightness information is smaller than the preset ambient illuminance value, call different light supplement levels to increase the luminance of the vehicle lamp in a low-light or dark-light environment, thereby ensuring the photographing quality of the vehicle camera in the low-light or dark-light environment.
The preset environment illumination value is obtained by calculation after multiple shooting environment simulation experiments. The setting of the preset environment illumination value is convenient for judging whether the current environment brightness meets the light inlet quantity required by the vehicle camera. And the N groups of preset environment illumination ranges are correspondingly associated with N illumination intensity parameters. N groups of numerical values of the preset environment illumination range are continuously connected end to end. For example, the first set of preset ambient illumination ranges is (x1, x2), the second set of preset ambient illumination ranges is (x2, x3), and the third set of preset ambient illumination ranges is (x3, x 4). Each group of preset illumination intensity ranges corresponds to one brightness, namely, the brightness corresponding to different illumination intensity parameters is different.
In step S301, N is optionally greater than or equal to 3, but not limited thereto. For example, when N is 3, the 3 sets of preset ambient illumination ranges set in this embodiment are range a (a, B), range B (B, C), and range C (C, d), respectively. Wherein a < b < c < d. When the illumination intensity of the ambient brightness information is within the preset ambient illumination range a, the preset ambient illumination range a is selected, and the light supplement grade corresponding to the preset ambient illumination range a is selected according to the preset ambient illumination range a, and the first control signal can control the integrated circuit to send the power of the light supplement grade to the vehicle lamp. When the illumination intensity of the ambient brightness information is greater than the range C, the vehicle lamp does not need to be supplemented with light at the moment, and the vehicle lamp light supplementing system can be turned off.
It should be noted that, the subsequent steps of the present embodiment are all described by taking the above-mentioned exemplified numerical parameters as examples, but are not limited thereto.
After the supplementary lighting level is selected according to the ambient brightness information in step S301, the supplementary lighting level needs to be further adjusted according to the vehicle driving speed, and therefore, the process proceeds to step S302.
Step S302, adjusting the light supplement grade and generating a first control signal according to the vehicle running speed and the preset vehicle speed; when the vehicle running speed is higher than the preset vehicle speed, the light supplement grade is increased to generate a first control signal; and reducing the light supplement grade to generate a first control signal under the condition that the running speed of the vehicle is less than the preset vehicle speed.
When the vehicle speed per hour is increased to the preset vehicle speed, the vehicle shooting picture is compared with the shooting picture at the speed within the preset vehicle speed, and the blurring and the smearing of different degrees occur. Different vehicle running speeds affect the shooting definition of the camera, so that the illumination level needs to be improved and the light supplement amount of the camera needs to be increased under the condition that the vehicle running speed is higher than the preset vehicle speed.
In one embodiment, the preset vehicle speeds in step S302 include a first preset vehicle speed and a second preset vehicle speed. When the vehicle running speed is less than the first preset vehicle speed, the light supplement level generated in step S301 may be adjusted downward, and when the vehicle running speed is greater than the second preset vehicle speed, the light supplement level generated in step S302 may be adjusted upward.
S202, receiving the image shot according to the first control signal light supplement, comparing the image with a preset image, and generating a second control signal according to a comparison result.
Step S202 is to further determine whether light supplement is required for the camera according to a result of the checking by checking the image quality of the image photographed according to the first control signal light supplement.
In one embodiment, the method for checking the picture quality in step S202 uses color temperature between the compared images.
Specifically, step S202 receives an image photographed according to the first control signal, compares the image with a preset image, and generates a second control signal according to a comparison result, including: receiving an image and extracting a color temperature value of the image; acquiring a preset color temperature value of a preset image, comparing the color temperature value of the image with the preset color temperature value of the preset image, and acquiring a comparison result; and under the condition that the comparison result does not conform to the color temperature value difference, adjusting the light supplement grade corresponding to the first control signal, and generating a second control signal according to the adjusted light supplement grade.
In this embodiment, extracting the color temperature value of the image includes: and selecting a preset number of pixels, and solving the average value of the color temperatures of the preset number of pixels. The preset image is an image with preset quality according to the preset illumination intensity of the car lamp under the condition of receiving the first control signal.
And S203, controlling the vehicle lamp to increase the light supplement amount of the camera according to the second control signal.
In step S203, a control signal is generated by the control unit MCU and transmitted to the driving circuit via the control unit MCU. The driving circuit generates different level signals and car light switch signals after receiving the control signals so as to control the car light to supplement light to the camera.
The light supplementing method for the vehicle camera can dynamically adjust the camera light supplementing according to the ambient brightness information of the vehicle running environment, the vehicle running speed and the camera shooting picture.
Corresponding to the embodiment of the application function implementation method, the application also provides a light supplement system of the vehicle camera, electronic equipment and a corresponding embodiment.
Fig. 4 is a schematic structural diagram of a light supplement system of a vehicle camera according to an embodiment of the present application.
Referring to fig. 4, the light supplement system of the vehicle camera includes: a photosensor 410, a speed sensor 420, a control unit 430, and a drive circuit 440. A photosensitive sensor 410 for acquiring the ambient brightness information of the vehicle driving to generate an ambient light signal; a speed sensor 420 for measuring a vehicle running speed to generate a vehicle speed pulse signal; the control unit MCU430 is used for receiving the ambient light signal, the vehicle speed pulse signal and the shot image and generating a vehicle lamp control signal; and the driving circuit 440 is used for controlling the vehicle lamp to realize the light supplement of the vehicle camera according to the vehicle lamp control signal.
In an embodiment, the light supplement system of the application is further connected with an automatic driving domain controller and a vehicle lamp, the domain controller is used for sending an instruction to the light supplement system, the vehicle lamp receives a vehicle lamp control signal of the light supplement system to supplement light, and the vehicle lamp is generally an LED vehicle lamp. The vehicle lamp comprises a single or a plurality of LED vehicle lamps, the brightness of the vehicle lamp can be conditioned through a driving circuit, and the higher the output power of the driving circuit is, the brighter the vehicle lamp is. The autopilot domain controller is a central control unit of the autopilot vehicle and can transmit data and commands with various components of the autopilot vehicle.
The photosensor 410 is a sensor that converts an optical signal into an electrical signal by using a photosensor, the photosensor 410 can convert the intensity of ambient light into an ambient light signal, and the control unit MCU430 acquires the ambient light signal through the AD channel to obtain the intensity information of the ambient light.
The speed sensor 420, which is generally an IMU module, i.e., an inertial measurement unit, may measure vehicle speed information and convert the speed information into a vehicle speed pulse signal to the control unit MCU 430.
The driving circuit 440 may drive a vehicle lamp, and control the power of the vehicle lamp according to the waveform of the control signal output by the control unit MCU430, thereby adjusting the brightness of the vehicle lamp. In the present application, the vehicle lamp is typically an LED vehicle lamp.
In one embodiment, the vehicle lamp control signal comprises a first control signal and a second control signal, the control unit MCU comprises a first signal module and a second signal module, and the first module is configured to generate the first control signal according to the ambient light signal and the vehicle speed pulse signal; the second control module is used for receiving the image shot according to the first control signal light supplement, comparing the image with a preset image and generating a second control signal according to a comparison result.
In one embodiment, the first module is configured to generate a first control signal based on an ambient light signal and a vehicle speed pulse signal, including; the first module acquires the ambient brightness information of the running vehicle according to the ambient light signal, and generates a light supplement grade according to the ambient brightness information and a preset illumination intensity range; the first module obtains the vehicle running speed according to the vehicle speed pulse signal, and adjusts the light supplement grade according to the vehicle running speed and the preset vehicle speed to generate a first control signal; the first module is used for enhancing the light supplement grade to generate a first control signal when the vehicle running speed is higher than the preset vehicle speed; the first module reduces the light supplement grade to generate a first control signal when the vehicle running speed is lower than the preset vehicle speed.
In the embodiment, the light supplement level is adjusted and a first control signal is generated according to the vehicle running speed and the preset vehicle speed; when the vehicle running speed is higher than the preset vehicle speed, the light supplement grade is increased to generate a first control signal; and reducing the light supplement grade to generate a first control signal under the condition that the running speed of the vehicle is less than the preset vehicle speed.
When the vehicle speed per hour is increased to the preset vehicle speed, the vehicle shooting picture is compared with the shooting picture at the speed within the preset vehicle speed, and the blurring and the smearing of different degrees occur. Different vehicle running speeds affect the shooting definition of the camera, so that the illumination level needs to be improved and the light supplement amount of the camera needs to be increased under the condition that the vehicle running speed is higher than the preset vehicle speed.
In one embodiment, the preset vehicle speed includes a first preset vehicle speed and a second preset vehicle speed. When the vehicle speed of traveling is less than first preset vehicle speed, can down regulate the light filling grade, when the vehicle speed of traveling is greater than the second preset vehicle speed, can up regulate the light filling grade.
S202, receiving the image shot according to the first control signal light supplement, comparing the image with a preset image, and generating a second control signal according to a comparison result.
Step S202 is to further determine whether light supplement is required for the camera according to a result of the checking by checking the image quality of the image photographed according to the first control signal light supplement.
In an embodiment, the step of storing the preset illumination intensity range in the control unit MCU430, before the control unit MCU430 generates the light supplement level according to the ambient brightness information and the preset illumination intensity range, includes: setting N groups of preset environment illumination values according to the preset illumination intensity range; and acquiring lighting power which is in one-to-one correspondence with the N groups of preset environment illumination ranges, wherein the lighting power is used for providing lighting within the preset illumination intensity range for the vehicle lamp, and N is a positive integer.
The ambient brightness information is compared with a preset ambient illuminance value, when the ambient brightness information is smaller than the preset ambient illuminance value, different light supplement grades are called, and the light brightness of the vehicle lamp in a weak light or dark light environment is improved, so that the photographing quality of the vehicle camera in the weak light or dark light environment is ensured.
The preset environment illumination value is obtained by calculation after multiple shooting environment simulation experiments. The setting of the preset environment illumination value is convenient for judging whether the current environment brightness meets the light inlet quantity required by the vehicle camera. And the N groups of preset environment illumination ranges are correspondingly associated with N illumination intensity parameters. N groups of numerical values of the preset environment illumination range are continuously connected end to end. For example, the first set of preset ambient illumination ranges is (x1, x2), the second set of preset ambient illumination ranges is (x2, x3), and the third set of preset ambient illumination ranges is (x3, x 4). Each group of preset illumination intensity ranges corresponds to one brightness, namely, the brightness corresponding to different illumination intensity parameters is different.
Alternatively, N.gtoreq.3, but is not limited thereto. For example, when N is 3, the 3 sets of preset ambient illumination ranges set in this embodiment are range a (a, B), range B (B, C), and range C (C, d), respectively. Wherein a < b < c < d. When the illumination intensity of the ambient brightness information is within the preset ambient illumination range a, the preset ambient illumination range a is selected, and the light supplement grade corresponding to the preset ambient illumination range a is selected according to the preset ambient illumination range a, and the first control signal can control the integrated circuit to send the power of the light supplement grade to the vehicle lamp. When the illumination intensity of the ambient brightness information is greater than the range C, the vehicle lamp does not need to be supplemented with light at the moment, and the vehicle lamp light supplementing system can be turned off.
In one embodiment, the vehicle lamp comprises a single or multiple LED vehicle lamp, and the brightness of the vehicle lamp can be conditioned by the driving circuit, and the higher the output power of the driving circuit, the brighter the vehicle lamp. An automatic driving area controller: the central control unit of the autonomous vehicle can perform data transmission and command transmission with each component of the autonomous vehicle.
The light supplementing method for the vehicle camera can dynamically adjust the camera light supplementing according to the ambient brightness information of the vehicle running environment, the vehicle running speed and the camera shooting picture. The application also provides a light supplementing system of the vehicle camera, the system can be communicated with a vehicle domain controller, the output of the comprehensive domain controller works, the light supplementing system comprises a photosensitive sensor, and the brightness of the vehicle lamp can be adaptively adjusted according to the ambient brightness information, so that the optimal light supplementing effect is provided for the camera; the light filling system is provided with an IMU speed sensor, the brightness of the vehicle lamp can be adjusted in a self-adaptive mode according to the vehicle speed, therefore, the best light filling effect is provided for the camera, the light filling effect can be adjusted by the control system according to received image quality information, the vehicle lamp control signal is further adjusted according to image quality colors, and therefore light filling of the vehicle camera is achieved.
The basic concept of the light supplement system of the vehicle camera provided by the embodiment of the invention is that the light supplement system of the vehicle camera judges the light supplement quantity required by the vehicle camera under various conditions in the shooting process by acquiring the ambient brightness information, the vehicle running speed, the shot image and other related information.
Referring to fig. 5, an electronic device 500 includes a memory 510 and a processor 520.
The Processor 520 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 510 may include various types of storage units, such as system memory, Read Only Memory (ROM), and permanent storage. Wherein the ROM may store static data or instructions for the processor 520 or other modules of the computer. The persistent storage device may be a read-write storage device. The persistent storage may be a non-volatile storage device that does not lose stored instructions and data even after the computer is powered off. In some embodiments, the persistent storage device employs a mass storage device (e.g., magnetic or optical disk, flash memory) as the persistent storage device. In other embodiments, the permanent storage may be a removable storage device (e.g., floppy disk, optical drive). The system memory may be a read-write memory device or a volatile read-write memory device, such as a dynamic random access memory. The system memory may store instructions and data that some or all of the processors require at runtime. Further, the memory 510 may comprise any combination of computer-readable storage media, including various types of semiconductor memory chips (e.g., DRAM, SRAM, SDRAM, flash memory, programmable read-only memory), magnetic and/or optical disks, as well. In some embodiments, memory 510 may include a removable storage device that is readable and/or writable, such as a Compact Disc (CD), a digital versatile disc read only (e.g., DVD-ROM, dual layer DVD-ROM), a Blu-ray disc read only, an ultra-dense disc, a flash memory card (e.g., SD card, min SD card, Micro-SD card, etc.), a magnetic floppy disk, or the like. Computer-readable storage media do not contain carrier waves or transitory electronic signals transmitted by wireless or wired means.
The memory 510 has stored thereon executable code that, when processed by the processor 520, may cause the processor 520 to perform some or all of the methods described above.
Furthermore, the method according to the present application may also be implemented as a computer program or computer program product comprising computer program code instructions for performing some or all of the steps of the above-described method of the present application.
Alternatively, the present application may also be embodied as a computer-readable storage medium (or non-transitory machine-readable storage medium or machine-readable storage medium) having executable code (or a computer program or computer instruction code) stored thereon, which, when executed by a processor of an electronic device (or server, etc.), causes the processor to perform part or all of the various steps of the above-described method according to the present application.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A light supplement method for a vehicle camera is characterized by comprising the following steps:
acquiring external information required by vehicle camera light supplement, and generating a first control signal according to the external information, wherein the external information comprises vehicle running ambient brightness information and vehicle running speed;
receiving an image shot according to the first control signal for light supplement, comparing the image with a preset image, and generating a second control signal according to a comparison result;
and controlling the vehicle lamp to increase the light supplement amount of the camera according to the second control signal.
2. The method according to claim 1, wherein the collecting external information required for supplementary lighting of a vehicle camera and generating a first control signal according to the external information comprises:
generating a supplementary lighting grade according to the environment brightness information and a preset lighting intensity range;
adjusting the light supplement grade and generating the first control signal according to the vehicle running speed and a preset vehicle speed;
when the vehicle running speed is higher than the preset vehicle speed, increasing the light supplement level to generate the first control signal;
and reducing the supplementary lighting grade to generate the first control signal under the condition that the vehicle running speed is less than the preset vehicle speed.
3. The method according to claim 2, wherein before generating the fill-in light level according to the ambient brightness information and the preset illumination intensity range, the method comprises:
setting N groups of preset environment illumination values according to the preset illumination intensity range;
and acquiring lamplight power which is in one-to-one correspondence with the N groups of preset environment illumination ranges, wherein the lamplight power is used for providing lamplight within the preset illumination intensity range for the vehicle lamp, and N is a positive integer.
4. The method according to claim 1, wherein the receiving an image supplementary-photographed according to a first control signal, comparing the image with a preset image, and generating a second control signal according to a comparison result comprises:
receiving the image, and extracting the color temperature value of the image;
acquiring a preset color temperature value of the preset image, comparing the color temperature value of the image with the preset color temperature value of the preset image, and acquiring a comparison result;
and under the condition that the comparison result does not conform to the color temperature value difference, adjusting the light supplement grade corresponding to the first control signal, and generating the second control signal according to the adjusted light supplement grade.
5. The utility model provides a light filling system of vehicle camera which characterized in that includes:
the photosensitive sensor is used for acquiring the ambient brightness information of the running vehicle to generate an ambient light signal;
the speed sensor is used for measuring the running speed of the vehicle to generate a vehicle speed pulse signal;
the control unit MCU is used for receiving the ambient light signal, the vehicle speed pulse signal and a shot image to generate a vehicle lamp control signal;
and the driving circuit is used for controlling the vehicle lamp to realize the light supplement of the vehicle camera according to the vehicle lamp control signal.
6. The system of claim 5, wherein the vehicle light control signal comprises a first control signal and a second control signal, and the control unit MCU comprises a first signal module and a second signal module, the first module being configured to generate the first control signal according to the ambient light signal and the vehicle speed pulse signal; the second control module is used for receiving the image shot according to the first control signal supplementary lighting, comparing the image with a preset image and generating a second control signal according to a comparison result.
7. The system of claim 7, wherein the first module is configured to generate a first control signal based on the ambient light signal and the vehicle speed pulse signal, including;
the first module acquires the ambient brightness information of vehicle running according to the ambient light signal, and generates a light supplement grade according to the ambient brightness information and a preset illumination intensity range;
the first module acquires the running speed of the vehicle according to the vehicle speed pulse signal, and adjusts the light supplement grade according to the running speed of the vehicle and the preset vehicle speed to generate the first control signal;
the first module is used for enhancing the light supplement grade to generate the first control signal when the vehicle running speed is higher than the preset vehicle speed;
the first module reduces the light supplement grade to generate the first control signal when the vehicle running speed is lower than the preset vehicle speed.
8. The system according to claim 5, wherein the control unit MCU stores a preset illumination intensity range, and before the control unit MCU generates the supplementary lighting level according to the ambient brightness information and the preset illumination intensity range, the method comprises:
setting N groups of preset environment illumination values according to the preset illumination intensity range;
and acquiring lamplight power which is in one-to-one correspondence with the N groups of preset environment illumination ranges, wherein the lamplight power is used for providing lamplight within the preset illumination intensity range for the vehicle lamp, and N is a positive integer.
9. An electronic device, comprising:
a processor; and
a memory having executable code stored thereon, which when executed by the processor, causes the processor to perform the method of any one of claims 1-4.
10. A computer-readable storage medium having stored thereon executable code, which when executed by a processor of an electronic device, causes the processor to perform the method of any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210439001.0A CN114827485A (en) | 2022-04-25 | 2022-04-25 | Light supplementing method and system for vehicle camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210439001.0A CN114827485A (en) | 2022-04-25 | 2022-04-25 | Light supplementing method and system for vehicle camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114827485A true CN114827485A (en) | 2022-07-29 |
Family
ID=82506912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210439001.0A Pending CN114827485A (en) | 2022-04-25 | 2022-04-25 | Light supplementing method and system for vehicle camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114827485A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1920896A (en) * | 2006-08-23 | 2007-02-28 | 王亚盛 | Real-time image monitoring and genuine-fake identification system for vehicle with automatic color regulating and light filling license plate |
| US20190041038A1 (en) * | 2017-08-03 | 2019-02-07 | Toyota Motor Engineering & Manufacturing North America, Inc. | Dynamic control of vehicle lamps during maneuvers |
| CN110351491A (en) * | 2019-07-25 | 2019-10-18 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of low light compensation method according under environment, apparatus and system |
| CN110460782A (en) * | 2019-08-28 | 2019-11-15 | 北京海益同展信息科技有限公司 | Information collecting device, method, crusing robot and storage medium |
| CN111083387A (en) * | 2019-12-24 | 2020-04-28 | 浙江吉利汽车研究院有限公司 | Vehicle-mounted camera exposure signal synchronization method and system and vehicle |
| CN210526396U (en) * | 2019-09-05 | 2020-05-15 | 江苏涵润汽车电子有限公司 | Intelligent auxiliary driving system |
| CN111432135A (en) * | 2020-03-31 | 2020-07-17 | 北京嘀嘀无限科技发展有限公司 | Monitoring device, method, apparatus and storage medium |
| CN111739193A (en) * | 2020-06-17 | 2020-10-02 | 重庆蓝岸通讯技术有限公司 | Automobile data recorder image display method and automobile data recorder |
| CN112339651A (en) * | 2020-11-27 | 2021-02-09 | 安徽工程大学 | Intelligent automobile headlamp system and control method thereof |
| CN113103994A (en) * | 2021-05-28 | 2021-07-13 | 驭势（上海）汽车科技有限公司 | Sensing linkage system of automatic driving vehicle and automatic driving vehicle |
| CN113246846A (en) * | 2021-06-07 | 2021-08-13 | 奇瑞新能源汽车股份有限公司 | Vehicle light control method and device and vehicle |
| WO2021244591A1 (en) * | 2020-06-03 | 2021-12-09 | 上海商汤临港智能科技有限公司 | Driving auxiliary device and method, and vehicle and storage medium |
| CN114286014A (en) * | 2021-12-29 | 2022-04-05 | 南京斯代尔网络科技有限公司 | Image database acquisition method |
-
2022
- 2022-04-25 CN CN202210439001.0A patent/CN114827485A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1920896A (en) * | 2006-08-23 | 2007-02-28 | 王亚盛 | Real-time image monitoring and genuine-fake identification system for vehicle with automatic color regulating and light filling license plate |
| US20190041038A1 (en) * | 2017-08-03 | 2019-02-07 | Toyota Motor Engineering & Manufacturing North America, Inc. | Dynamic control of vehicle lamps during maneuvers |
| CN110351491A (en) * | 2019-07-25 | 2019-10-18 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of low light compensation method according under environment, apparatus and system |
| CN110460782A (en) * | 2019-08-28 | 2019-11-15 | 北京海益同展信息科技有限公司 | Information collecting device, method, crusing robot and storage medium |
| CN210526396U (en) * | 2019-09-05 | 2020-05-15 | 江苏涵润汽车电子有限公司 | Intelligent auxiliary driving system |
| CN111083387A (en) * | 2019-12-24 | 2020-04-28 | 浙江吉利汽车研究院有限公司 | Vehicle-mounted camera exposure signal synchronization method and system and vehicle |
| CN111432135A (en) * | 2020-03-31 | 2020-07-17 | 北京嘀嘀无限科技发展有限公司 | Monitoring device, method, apparatus and storage medium |
| WO2021244591A1 (en) * | 2020-06-03 | 2021-12-09 | 上海商汤临港智能科技有限公司 | Driving auxiliary device and method, and vehicle and storage medium |
| CN111739193A (en) * | 2020-06-17 | 2020-10-02 | 重庆蓝岸通讯技术有限公司 | Automobile data recorder image display method and automobile data recorder |
| CN112339651A (en) * | 2020-11-27 | 2021-02-09 | 安徽工程大学 | Intelligent automobile headlamp system and control method thereof |
| CN113103994A (en) * | 2021-05-28 | 2021-07-13 | 驭势（上海）汽车科技有限公司 | Sensing linkage system of automatic driving vehicle and automatic driving vehicle |
| CN113246846A (en) * | 2021-06-07 | 2021-08-13 | 奇瑞新能源汽车股份有限公司 | Vehicle light control method and device and vehicle |
| CN114286014A (en) * | 2021-12-29 | 2022-04-05 | 南京斯代尔网络科技有限公司 | Image database acquisition method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102271218B (en) | Scene-oriented ultra-intelligent video camera and camera shooting method thereof | |
| US9639764B2 (en) | Image recognition system for vehicle for traffic sign board recognition | |
| US10084967B1 (en) | Systems and methods for regionally controlling exposure time in high dynamic range imaging | |
| JP5389274B2 (en) | Image processing apparatus, photographing apparatus, image processing method, and white balance adjustment method | |
| CN104869321B (en) | The method and apparatus for controlling camera exposure | |
| US6859618B1 (en) | Exposure compensation method and system employing meter matrix and flash | |
| CN107111992A (en) | The method and terminal of a kind of adjusting backlight luminance | |
| CN101646021A (en) | Exposure determining device and image processing apparatus | |
| KR101932542B1 (en) | Apparatus and method of calculating flicker-evaluation value | |
| US11386867B2 (en) | In-vehicle display control device | |
| JP2009017474A (en) | Image processing unit and image processing method | |
| KR20210155743A (en) | Method for image processing of high dynamic range sensors for handling white balance | |
| JPWO2020129522A1 (en) | Image processing device | |
| TWI767422B (en) | A low-light imaging system | |
| CN114827485A (en) | Light supplementing method and system for vehicle camera | |
| KR20140147211A (en) | Method for Detecting Fog for Vehicle and Apparatus therefor | |
| CN112140877A (en) | Display effect control method and device of vehicle-mounted head-up display device and vehicle | |
| CN205864557U (en) | A kind of video camera with automatic light filling function | |
| KR101344066B1 (en) | Apparatus for illumination controlling of black box using car and method thereof | |
| CN113306486B (en) | In-vehicle lighting device control method, storage medium, and electronic apparatus | |
| US11882367B2 (en) | Image processing method for producing a high dynamic range image of a scene | |
| JP4304610B2 (en) | Method and apparatus for adjusting screen brightness in camera-type vehicle detector | |
| CN113657427B (en) | In-vehicle multi-source image fusion recognition method and device | |
| US20210258463A1 (en) | Camera Auto-Flash Optimization and Intelligent Slow Sync Flash Mode | |
| JP2009044451A (en) | Image processor, on-vehicle image processor, and on-vehicle image processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |