In-cabin light supplementing control method and system and vehicle

Abstract

The invention relates to an in-cabin light supplementing control method and system and a vehicle. The method comprises the steps that the working state of a second camera is obtained; based on the working state of the second camera, outputting the same pulse control signal to a preset light supplement lamp and to the first camera and / or the second camera; based on the same pulse control signal, the light supplementing time of a preset light supplementing lamp is controlled, and the exposure time of the first camera and / or the exposure time of the second camera are / is controlled; wherein the light supplementing time of the preset light supplementing lamp is greater than the exposure time of the first camera and the exposure time of the second camera, so that light supplementing is carried out in the corresponding exposure time. Thus, the light supplementing time of the preset light supplementing lamp at the corresponding position, the exposure time of the first camera and / or the exposure time of the second camera are controlled, light supplementing is carried out in the corresponding exposure time, and the image quality and the algorithm precision during exposure are further improved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle monitoring technology, and in particular to a method and system for controlling in-cabin fill light, and a vehicle. Background Art

[0002] At present, with the widespread use of vehicles, people's requirements for the functions inside the vehicle are gradually increasing. For example, in order to monitor or observe the situation inside the vehicle in real time, the corresponding camera is usually installed in the car cabin. However, in order to ensure a certain monitoring range, the installation position of the camera in the existing vehicle (or car cabin) is relatively fixed and uniform. Therefore, when obtaining images corresponding to objects at different distances in the car cabin, there will be a problem of insufficient fill light, which will lead to a decrease in the image quality of the obtained image and affect the accuracy of the corresponding algorithm. Summary of the invention

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a method, system and vehicle for controlling in-cabin fill light.

[0004] In a first aspect, the present disclosure provides a method for controlling fill light in a cabin, wherein the cabin includes a first camera, a second camera, and a preset fill light arranged at intervals, and the method includes:

[0005] Obtaining the working status of the second camera;

[0006] Based on the working state of the second camera, outputting the same pulse control signal to the preset fill light, and to the first camera and / or the second camera;

[0007] Based on the same pulse control signal, controlling the fill light time of the preset fill light, and controlling the exposure time of the first camera and / or the exposure time of the second camera;

[0008] The fill light time of the preset fill light is greater than the exposure time of the first camera and the exposure time of the second camera, so that fill light is performed within the corresponding exposure time.

[0009] Optionally, the cabin further includes a target display screen, and the second camera is arranged on the target display screen; and obtaining the working status of the second camera includes:

[0010] Acquire the working state of the target display screen; the working state of the target display screen includes the target display screen being turned on and the target display screen being turned off;

[0011] Based on the target display screen being turned on, determining that the working state of the second camera is turned on; or based on the target display screen being turned off, determining that the working state of the second camera is turned off.

[0012] Optionally, obtaining the working status of the target display screen includes:

[0013] Receiving a switch signal for the target display screen; the switch signal includes a screen on signal and a screen off signal;

[0014] Based on the screen-on signal, it is determined that the target display screen is turned on, or based on the screen-off signal, it is determined that the target display screen is turned off.

[0015] Optionally, the outputting the same pulse control signal to the preset fill light and to the first camera and / or the second camera based on the working state of the second camera includes:

[0016] Based on the working state of the second camera being turned on, outputting the same pulse control signal to the first camera, the second camera and the preset fill light;

[0017] or,

[0018] Based on the working state of the second camera being off, the same pulse control signal is output to the first camera and the preset fill light.

[0019] Optionally, the first camera and the second camera each include an electrically connected serializer, an image sensor, and an exposure light; and the outputting the same pulse control signal to the first camera, the second camera, and the preset fill light includes:

[0020] Outputting the same pulse control signal to the serializer in the first camera, the serializer in the second camera, and the preset fill light;

[0021] Transmitting the same pulse control signal to the image sensor in the first camera and the image sensor in the second camera via the serializer in the first camera and the serializer in the second camera respectively;

[0022] The same pulse control signal is transmitted to the exposure light in the first camera and the exposure light in the second camera correspondingly through the image sensor in the first camera and the image sensor in the second camera.

[0023] Optionally, controlling the fill light time of the preset fill light includes:

[0024] Obtaining the rising edge time and the falling edge time of the pulse control signal;

[0025] Based on the rising edge moment and the falling edge moment, the preset fill light is controlled to turn on the fill light at the rising edge moment, and the fill light is controlled to turn off the fill light at the falling edge moment.

[0026] Optionally, controlling the exposure time of the first camera and / or the exposure time of the second camera includes:

[0027] Based on the target display screen being turned on, controlling the first camera and the second camera to start exposure at or after the rising edge moment, and to stop exposure before the falling edge moment;

[0028] or,

[0029] Based on the target display screen being turned off, the first camera is controlled to start exposure at or after the rising edge moment, and to stop exposure before the falling edge moment.

[0030] Optionally, the cabin further includes adjacent first, second, and third areas, the first camera is close to the first area, and the second camera and the preset fill light are close to the second area; and controlling the first camera and the second camera to start exposure at or after the rising edge moment, and to stop exposure before the falling edge moment, comprises:

[0031] The first camera is controlled to expose the first area, the second camera is controlled to expose the second area and the third area, and the preset fill light is controlled to fill light the second area and the third area.

[0032] Optionally, controlling the first camera to start exposure at the rising edge moment or after the rising edge moment, and to stop exposure before the falling edge moment, includes:

[0033] The first camera is controlled to expose the first area, the second area, and the third area, and the preset fill light is controlled to fill light the first area, the second area, and the third area.

[0034] Optionally, turning off exposure before the falling edge moment includes:

[0035] Acquire an exposure target area image;

[0036] Based on the exposure target area image, acquiring image brightness;

[0037] It is determined that the image brightness reaches a preset brightness, and the exposure is turned off before the falling edge moment.

[0038] In a second aspect, the present disclosure also provides an in-cabin fill light control system, the system comprising: a first camera, a second camera, a preset fill light and a controller that are electrically connected; the first camera, the second camera and the preset fill light are set at intervals; the controller is used to execute the steps of any one of the methods in the first aspect.

[0039] Optionally, the system further comprises a target display screen, a first area, a second area and a third area;

[0040] The first area, the second area and the third area are arranged adjacent to each other; the first camera is close to the first area; the second camera is arranged on the target display screen and close to the second area; and the preset fill light is arranged on a plane inside the cabin facing the second area.

[0041] Optionally, the first camera and the second camera include a serializer, an image sensor, and an exposure light;

[0042] The serializer is connected to the exposure lamp through the image sensor;

[0043] The serializer is used to transmit a pulse control signal to the image sensor; and the image sensor is used to transmit the pulse control signal to the exposure lamp.

[0044] In a third aspect, the present disclosure further provides a vehicle, comprising any one of the in-cabin fill light control systems in the second aspect.

[0045] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0046] In the cabin fill light control method provided by the present disclosure, the cabin includes a first camera, a second camera and a preset fill light which are arranged at intervals; the method includes: obtaining the working state of the second camera; based on the working state of the second camera, outputting the same pulse control signal to the preset fill light, and to the first camera and / or the second camera; based on the same pulse control signal, controlling the fill light time of the preset fill light, and controlling the exposure time of the first camera and / or the exposure time of the second camera; wherein the fill light time of the preset fill light is greater than the exposure time of the first camera and the exposure time of the second camera, so as to perform fill light within the corresponding exposure time. In this way, by controlling the fill light time of the preset fill light at the corresponding position, the exposure time of the first camera and / or the exposure time of the second camera, so as to perform fill light within the corresponding exposure time, the image quality and algorithm accuracy during exposure are further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0049] Figure 1 A schematic diagram of a flow chart of a method for controlling fill light in a cabin provided by an embodiment of the present disclosure;

[0050] Figure 2 A schematic diagram of a timing waveform for fill light in a cabin provided by an embodiment of the present disclosure;

[0051] Figure 3 A schematic diagram of the structure of a cabin fill light control system provided by an embodiment of the present disclosure;

[0052] Figure 4 A schematic diagram of the structure of another in-cabin fill light control system provided in an embodiment of the present disclosure.

[0053] Among them, 210, the first camera; 220, the second camera; 230, the preset fill light; 01, the controller; 02, the serializer; 03, the image sensor; 04, the exposure light. DETAILED DESCRIPTION

[0054] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0055] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0056] The following is an illustrative description of the cabin fill light control method, system and vehicle provided by the embodiments of the present disclosure in conjunction with the accompanying drawings.

[0057] Figure 1 The present invention provides a flow chart of a method for controlling a fill light in a cabin provided by an embodiment of the present invention. The control method can be executed by a vehicle-mounted infotainment system (Head Unit, HU), i.e., a vehicle computer, for example, by a processor or a main control chip in the vehicle-mounted infotainment system. Figure 1 , the control method comprises:

[0058] S110: Obtain the working status of the second camera.

[0059] The cabin includes a first camera, a second camera and a preset fill light which are arranged at intervals. It should be noted that the first camera, the second camera and the preset fill light correspond to the subsequent first area, the second area and the third area respectively, that is, the interval between the three is related to the above three areas, and the specific correspondence will be described in detail later.

[0060] Specifically, by obtaining the working status of the second camera, it is possible to determine whether the second camera is working, thereby determining the specific receiving object corresponding to the output of the pulse control signal, and further control the fill light status of the preset fill light, the exposure status of the first camera and the second camera through the pulse control signal, so as to achieve fill light within the corresponding exposure time while satisfying the different working statuses of the second camera.

[0061] Exemplarily, when the method provided by the embodiment of the present disclosure is applied to a vehicle, the first camera and the second camera may be automotive-grade binocular cameras used in a car cabin. Binocular cameras are generally used in occupant monitoring systems (OMS), driver monitoring systems (DMS) and gesture recognition applications. A synchronous exposure image is obtained by calibrating the binocular camera, and then the third-dimensional depth information of the acquired two-dimensional image pixels is calculated. In particular, the type and structure of the first camera and the second camera are consistent to ensure consistent exposure effects.

[0062] S120: Based on the working state of the second camera, output the same pulse control signal to the preset fill light, and to the first camera and / or the second camera.

[0063] The pulse control signal is a control signal sent by a controller such as a main control chip in an in-vehicle infotainment system. For example, the pulse control signal may be a pulse width modulation (PWM) waveform sent by a microcontroller unit (MCU). In particular, the PWM wave is a rectangular wave and may control the preset fill light fill state, the first camera, and the second camera exposure state, respectively, which will be described exemplarily in the following text.

[0064] Specifically, in combination with the above steps, the same PWM wave is output to the preset fill light, and to the first camera and / or the second camera, including the following three output situations: the first situation: outputting the same PWM wave to the preset fill light, the first camera and the second camera; the second situation: outputting the same PWM wave to the preset fill light and the first camera; the third situation: outputting the same PWM wave to the preset fill light and the second camera; in the embodiment of the present disclosure, on the premise that the second camera meets the corresponding working status, the first and second situations met therein are exemplified in the subsequent description.

[0065] S130: Based on the same pulse control signal, control the fill light time of the preset fill light, and control the exposure time of the first camera and / or the exposure time of the second camera.

[0066] The fill light time of the preset fill light is greater than the exposure time of the first camera and the exposure time of the second camera, so that fill light is performed within the corresponding exposure time.

[0067] Among them, the PWM wave controls the fill light time of the preset fill light, the exposure time of the first camera and / or the exposure time of the second camera through the amplitude such as the level. Specifically, when the PWM wave emitted by the MCU has a rising edge, the preset fill light fill light and the first camera and / or the second camera exposure can be controlled to be turned on almost synchronously. After that, when the PWM wave continues to be at a high level for a certain period of time, the first camera and / or the second camera will turn off the exposure in advance if the preset conditions are met, and the preset fill light turns off the fill light when the PWM wave has a falling edge, so that the fill light time of the preset fill light is greater than the exposure time of the first camera and the exposure time of the second camera, ensuring that when the first camera and / or the second camera is exposed, the preset fill light must be in the fill light, so as to improve the image quality and algorithm accuracy during exposure. The specific principles and preset conditions for controlling the fill light time and exposure time will be explained later.

[0068] The in-cabin fill light control method provided by the disclosed embodiment includes: obtaining the working status of the second camera; based on the working status of the second camera, outputting the same pulse control signal to the preset fill light, and to the first camera and / or the second camera; based on the same pulse control signal, controlling the fill light time of the preset fill light, and controlling the exposure time of the first camera and / or the exposure time of the second camera; wherein the fill light time of the preset fill light is greater than the exposure time of the first camera and the exposure time of the second camera, so as to perform fill light within the corresponding exposure time. In this way, by controlling the fill light time of the preset fill light at the corresponding position, the exposure time of the first camera, and / or the exposure time of the second camera, so as to perform fill light within the corresponding exposure time, the image quality and algorithm accuracy during exposure are further improved.

[0069] In some embodiments, the cabin further includes a target display screen, and the second camera is disposed on the target display screen. Figure 1 , S110 specifically includes the following steps:

[0070] Step 1: Get the working status of the target display screen.

[0071] The working state of the target display screen includes the target display screen being turned on and the target display screen being turned off.

[0072] Specifically, by integrating the second camera on the target display screen, such as locating the second camera on the upper surface of the screen of the target display screen, the working states of the second camera and the target display screen can have corresponding correlations, including: when the target display screen is turned off, the second camera does not work, that is, it always remains turned off subsequently; when the target display screen is turned on, the second camera works, that is, it will be turned on for exposure subsequently.

[0073] Step 2: based on the target display screen being turned on, determining that the working state of the second camera is turned on; or, based on the target display screen being turned off, determining that the working state of the second camera is turned off.

[0074] Combined with step 1 above, it can be seen that since the second camera and the target display screen are integrated into one, there is a correlation between the two in terms of working status. It is not difficult to understand that when the target display screen is turned on, since the second camera is also turned on at this time, the pulse control signal will be output to the preset fill light, the first camera and the second camera; conversely, when the target display screen is turned off, since the second camera is also turned off at this time, the pulse control signal will be output to the preset fill light and the first camera.

[0075] In some embodiments, in combination with the above steps, obtaining the working status of the target display screen includes the following steps:

[0076] Step 1: Receive a switch signal for the target display screen.

[0077] The switch signal includes a screen on signal and a screen off signal.

[0078] Among them, the vehicle computer is used to control whether the second camera is working based on the switch signal of the target display screen. On this basis, the circuits for the vehicle computer to receive the switch signal for the target display screen and control whether the second camera is working are set separately.

[0079] Exemplarily, after the vehicle computer receives the switch signal for the target display screen, it will send a corresponding control instruction to the second camera to indicate whether the second camera is working. The specific process of indicating whether the second camera is working is exemplified later.

[0080] Step 2: Based on the screen-on signal, determine that the target display screen is turned on, or based on the screen-off signal, determine that the target display screen is turned off.

[0081] Specifically, after the vehicle computer receives a screen-on signal for the target display screen, it will send a corresponding control instruction such as a turn-on control instruction to the second camera to control the second camera to turn on; correspondingly, after the vehicle computer receives a screen-off signal for the target display screen, it will send a corresponding control instruction such as a turn-off control instruction to the second camera to control the second camera to turn off.

[0082] It should be noted that the instruction issued by the vehicle computer to indicate whether the second camera is working is used to determine whether the second camera can work together with the first camera in the subsequent process. That is, if the second camera can work, the second camera and the first camera can be controlled to open and close the exposure together through the PWM wave issued subsequently; if the second camera cannot work, the second camera will always remain closed, and the PWM wave issued subsequently will not perform the above control on the second camera.

[0083] In some embodiments, reference Figure 1 , S120 specifically includes the following steps:

[0084] Based on the working state of the second camera being on, the same pulse control signal is output to the first camera, the second camera and the preset fill light; or, based on the working state of the second camera being off, the same pulse control signal is output to the first camera and the preset fill light.

[0085] Specifically, when the second camera is turned on, it indicates that the second camera can be controlled for exposure, and for this purpose, the vehicle computer sends PWM waves to the first camera, the second camera, and the preset fill light; conversely, when the second camera is turned off, it indicates that the second camera cannot be controlled for exposure later, and for this purpose, the vehicle computer sends PWM waves only to the first camera and the preset fill light. In this way, it is beneficial to realize the control of the fill light time of the preset fill light and the exposure time of the first camera and / or the second camera by the PWM wave in different application scenarios of turning the second camera on and off.

[0086] In some embodiments, the first camera and the second camera both include an electrically connected serializer, an image sensor, and an exposure light. In combination with the above steps, outputting the same pulse control signal to the first camera, the second camera, and the preset fill light includes the following steps:

[0087] Step 1: output the same pulse control signal to the serializer in the first camera, the serializer in the second camera, and the preset fill light.

[0088] The serializer is connected to the exposure light through the image sensor, thereby forming a relationship in which the serializer, the image sensor and the exposure light are connected in sequence. It is not difficult to understand that for the first camera and the second camera, when the vehicle computer sends the same pulse control signal to the first camera and the second camera, the serializers in the first camera and the second camera will first receive the pulse control signal, and then the pulse control signal will be received by other structures in the first camera and the second camera in turn; and for the preset fill light, the same pulse control signal sent by the vehicle computer will be directly received by the preset fill light.

[0089] Step 2: Transmitting the same pulse control signal to the image sensor in the first camera and the image sensor in the second camera via the serializer in the first camera and the serializer in the second camera respectively.

[0090] Specifically, in combination with the pulse control signal receiving process above, for the first camera and the second camera, after the serializers in the first camera and the second camera respectively receive the pulse control signal, they will continue to transmit the pulse control signal to the corresponding connected image sensors. At this time, the image sensor in the first camera and the image sensor in the second camera will be triggered by the pulse control signal to expose or turn off the exposure, thereby realizing the control of the exposure light on and off through the image sensor.

[0091] Step 3: Transmitting the same pulse control signal to the exposure lamp in the first camera and the exposure lamp in the second camera via the image sensor in the first camera and the image sensor in the second camera respectively.

[0092] Combined with the receiving process of the pulse control signal above, when the pulse control signal is triggered by a high level, the image sensors of the first camera and the second camera will start exposure, so that the exposure light in the first camera and the exposure light in the second camera will be controlled to be turned on by the image sensor; conversely, when the pulse control signal is triggered by a low level, the image sensors of the first camera and the second camera will turn off exposure, so that the exposure light in the first camera and the exposure light in the second camera will be controlled to be turned off by the image sensor.

[0093] It should be noted that in the disclosed embodiment, when the first camera, the second camera, and the preset fill light all receive the same pulse control signal, it can be regarded that the first camera, the second camera, and the preset fill light are all used for fill light in the cabin, and the pulse control signal is triggered by a high level. At this time, the preset fill light will perform fill light within the exposure time of the first camera and the second camera. It is not difficult to understand that when only the first camera and the preset fill light receive the same pulse control signal, it can be regarded that only the first camera and the preset fill light are both used for fill light in the cabin, and the pulse control signal is still triggered by a high level. At this time, the preset fill light will perform fill light within the exposure time of the first camera.

[0094] In some embodiments, reference Figure 1 In S130, controlling the fill light time of the preset fill light includes the following steps:

[0095] Step 1: Obtain the rising edge time and falling edge time of the pulse control signal.

[0096] Among them, the rising edge moment and falling edge moment of the pulse control signal such as the PWM wave are respectively used to indicate the beginning of the high level and the low level. By obtaining the rising edge moment of the PWM wave, it is beneficial to further control the preset fill light to turn on the fill light; similarly, by obtaining the falling edge moment of the PWM wave, it is beneficial to further control the preset fill light to turn off the fill light. This is exemplified in the following text.

[0097] Exemplarily, since the duty cycle of the pulse control signal is variable, the duty cycle of the PWM wave can be set to about 30%. In other embodiments, the pulse control signal can be set to other duty cycles or duty cycle ranges according to the cabin fill light requirements, which are not specifically limited here.

[0098] Step 2: Based on the rising edge moment and the falling edge moment, control the preset fill light to turn on the fill light at the rising edge moment, and control the fill light to turn off the fill light at the falling edge moment.

[0099] Specifically, when the PWM wave is at the rising edge, the preset fill light is synchronously controlled to turn on the fill light, until the PWM wave is at the falling edge, the preset fill light is controlled to turn off the fill light, and when the next rising edge of the PWM wave arrives, the preset fill light is controlled to turn on the fill light again, and the above control process is repeated. It can be seen that the waveform of the PWM wave is the same as the waveform corresponding to the operation of the preset fill light. The waveform diagrams of the two are exemplified in the following text.

[0100] In some embodiments, reference Figure 1 In S130, controlling the exposure time of the first camera and / or the exposure time of the second camera includes the following steps:

[0101] Based on the target display screen being turned on, the first camera and the second camera are controlled to start exposure at the rising edge moment or after the rising edge moment, and to turn off exposure before the falling edge moment; or, based on the target display screen being turned off, the first camera is controlled to start exposure at the rising edge moment or after the rising edge moment, and to turn off exposure before the falling edge moment.

[0102] For example, Figure 2 A schematic diagram of a timing waveform for cabin fill light provided by an embodiment of the present disclosure. Figure 2 , Figure 2 The waveform diagram corresponding to X1, X2 and X3 is shown, where: X1 represents PWM wave, X2 represents preset fill light, X3 represents the first camera and the second camera, t0 represents a rising edge moment in the PWM wave, and t1 represents a falling edge moment in the PWM wave. Combined with the fill light process of the preset fill light above, on the basis of the target display screen being turned on, the second camera is turned on, so after the vehicle computer sends out the PWM wave, it can synchronously control the preset fill light to turn on the fill light, the first camera and the second camera to turn on and expose at the rising edge moment t0, and control the preset fill light to turn off the fill light at the falling edge moment t1, and the first camera and the second camera to turn off and expose before the rising edge moment t0; on the basis of the target display screen being turned off, the second camera is turned off, so after the vehicle computer sends out the PWM wave, it can synchronously control the preset fill light to turn on the fill light and the first camera to turn on and expose at the rising edge moment t0, and control the preset fill light to turn off the fill light at the falling edge moment t1, and the first camera to turn off and expose before the rising edge moment t0.

[0103] It is not difficult to understand that since the PWM wave needs to be transmitted to the exposure lamp through the serializer and the image sensor in the first camera and the second camera, the time for transmitting the PWM wave is increased, which may cause a certain delay in starting the exposure of the first camera and / or the second camera compared to the preset fill light turning on the fill light, so that the first camera and / or the second camera can start exposure after the rising edge time t0 shown in the figure. Here, the duration of the delay in starting the exposure can be ignored, and it is usually regarded that the preset fill light turns on the fill light and the first camera and / or the second camera starts the exposure simultaneously.

[0104] In some embodiments, the cabin further includes adjacent first, second, and third areas, the first camera is close to the first area, and the second camera and the preset fill light are close to the second area. In combination with the situation in which the second camera is turned on in the above embodiment, controlling the first camera and the second camera to turn on exposure at or after the rising edge moment, and to turn off exposure before the falling edge moment, includes:

[0105] The first camera is controlled to expose the first area, the second camera is controlled to expose the second area and the third area, and the preset fill light is controlled to fill light the second area and the third area.

[0106] Among them, the first area, the second area and the third area may correspond to the area where the first row of seats is located, the area where the second row of seats is located and the area where the third row of seats is located. Exemplarily, for fill light in the car cabin, since the second camera is integrated with the target display screen, and the second camera and the preset fill light are close to the second area, the target display screen may be the second row of entertainment display screen (referred to as the second row screen), and the second camera is a binocular camera on the second row of entertainment display screen. At the same time, the preset fill light may be an infrared fill light, for example: it may be installed in the upper rear area of ​​the cabin such as the ceiling of the second row of seats; in addition, the first camera may be installed on the rearview mirror. The specific installation positions of the first camera and the second camera are not limited here, and it is only necessary to ensure that the first camera and the second camera can illuminate all passengers.

[0107] Specifically, on the basis of turning on the second camera, it can be known that the preset fill light, the first camera and the second camera are all working, but when the preset fill light is turned on for fill light, and the first camera and the second camera are turned on for exposure synchronously, the target display screen will block the field of view of the first camera, so that the first camera only exposes the scene within the first area, and the second camera exposes the scene within the second area and the third area. At the same time, the preset fill light above the second area will fill light the scene within the second area and the third area, preventing the situation where the scene within the second area is brighter and the scene within the third area is darker, thereby increasing the fill light for the scene within the third area and improving its image quality, thereby optimizing the brightness of the overall image quality.

[0108] In some embodiments, controlling the first camera to start exposure at or after the rising edge moment and to stop exposure before the falling edge moment includes:

[0109] The first camera is controlled to expose the first area, the second area and the third area, and the preset fill light is controlled to fill light the first area, the second area and the third area.

[0110] Specifically, on the basis that the second camera is turned off, it can be known that only the preset fill light and the first camera are working, so when the preset fill light is turned on for fill light and the first camera is turned on for exposure, the target display screen will be in a retracted state due to being turned off, and the target display screen will not block the field of view of the first camera, so that the first camera exposes the scenes within the first area, the second area and the third area. At the same time, the preset fill light above the second area fills in the scenes within the first area, the second area and the third area, preventing the situation where the scenes within the first area are brighter and the scenes within the second and third areas are darker, thereby increasing the fill light for the scenes within the second and third areas and improving their image quality, thereby optimizing the brightness of the overall image quality.

[0111] In some embodiments, in combination with the above embodiments, the exposure is turned off before the falling edge moment, specifically including the following steps:

[0112] Step 1: Obtain an exposure target area image.

[0113] Among them, both the first camera and the second camera have an automatic exposure function. Specifically, when the first camera and / or the second camera is exposed, the target area image of the exposure will be continuously obtained. For example, the first camera can obtain the entire image within the range of the first row of seats, or obtain a certain area in the entire image within the range of the first row of seats. The target area image can be obtained according to the actual needs of the cabin exposure, and its size is not limited here.

[0114] Step 2: Obtain image brightness based on the exposure target area image.

[0115] Specifically, after obtaining the exposed target area image, the image brightness in the target area image can be obtained so as to compare the image brightness with the preset brightness to determine whether the current image brightness reaches the preset brightness, thereby controlling whether the first camera and / or the second camera turns off exposure. This judgment process is explained in the following text.

[0116] Step 3: Make sure that the image brightness reaches the preset brightness and turn off the exposure before the falling edge moment.

[0117] Specifically, when the image brightness in the target area image reaches a preset brightness, the image sensor in the first camera and / or the second camera will be controlled to turn off the exposure light, thereby ending the exposure ahead of schedule, that is, the first camera and / or the second camera turns off the exposure before the falling edge of the PWM wave. The specific size and range of the preset brightness are not limited here.

[0118] In addition, it should be noted that the preset fill light is set close to the second row of seats, such as on the ceiling of the second row of seats. In order to avoid differences in the fill light effects at different positions around it, the acquired target area image can be divided into regions. For example, when the target display screen is turned on, the preset fill light can fill in the scenes within the second row of seats and the third row of seats. Since the preset fill light is closer to the second row of seats and farther away from the third row of seats, the preset brightness corresponding to the scenes within the second row of seats in the image can be lowered, and the preset brightness corresponding to the scenes within the third row of seats in the image can be increased, so that the overall picture quality brightness is uniform.

[0119] Based on the above implementation, the disclosed embodiment also provides a cabin fill light control system.

[0120] In some embodiments, Figure 3 This is a schematic diagram of the structure of a cabin fill light control system provided by an embodiment of the present disclosure, referring to Figure 3 The system includes: a first camera 210, a second camera 220, a preset fill light 230 and a controller 01 that are electrically connected; the first camera 210, the second camera 220 and the preset fill light 230 are arranged at intervals; the controller 01 is used to execute any of the above control methods, and has corresponding beneficial effects.

[0121] In some embodiments, the system also includes a target display screen, a first area, a second area and a third area (not shown in the figures); the first area, the second area and the third area are arranged adjacent to each other; the first camera is close to the first area; the second camera is arranged on the target display screen and close to the second area; and a preset fill light is arranged on a plane inside the cabin facing the second area.

[0122] Here, the specific positions of the target display screen, the first area, the second area, the third area, the first camera, the second camera and the preset fill light have been exemplarily described above and will not be repeated here.

[0123] In some embodiments, Figure 4 A schematic diagram of another cabin fill light control system provided by an embodiment of the present disclosure, in Figure 3 Based on Figure 4 The first camera 210 and the second camera 220 include a serializer 02, an image sensor 03 and an exposure light 04; the serializer 02 is connected to the exposure light 04 through the image sensor 03; the serializer 02 is used to transmit the pulse control signal to the image sensor 03; the image sensor 03 is used to transmit the pulse control signal to the exposure light 04.

[0124] It can be seen that the first camera 210, the second camera 220 and the preset fill light 230 are respectively connected to the controller 01. On this basis, the PWM wave emitted by the controller 01 is transmitted along the route in the figure (see the direction of the arrow), and the switching status of the exposure light 04 in the first camera 210 and the exposure light 04 in the second camera 220 are controlled by their respective image sensors.

[0125] Specifically, the PWM wave emitted by the MCU in the controller 01 passes through the deserializer in the controller (not shown in the figure), such as the MAX96712 model deserializer, and then transmits the power over coaxial (POC) between the deserializer and the corresponding serializer to map the PWM wave to the corresponding serializer, and then the corresponding serializer transmits the PWM wave to the corresponding image sensor, and finally the image sensor transmits it to the corresponding exposure light such as an infrared LED to control the corresponding exposure light to turn on. Specifically, the corresponding image sensor starts exposure after receiving the rising edge trigger of the PWM wave, and controls the corresponding infrared LED to turn on. When the image brightness reaches the preset brightness, the image sensor ends the exposure in advance and controls the corresponding infrared LED to turn off. At the same time, the PWM wave will be transmitted to the preset fill light 230 through the input / output (I / O) low-voltage wiring harness.

[0126] It is not difficult to understand that if only the exposure light is used for fill light, it will lead to insufficient fill light in the cabin, resulting in a poor exposure effect. To address this, by setting a preset fill light 230, the lack of fill light in the cabin can be compensated for, and fill light can be provided when the first camera 210 and / or the second camera 220 is exposed to ensure a good exposure effect.

[0127] In addition, with regard to the vehicle's in-cabin fill light, it should be noted that the first camera 210 and the preset fill light 230 are both powered by the KL30 mode, that is, they are powered by the entire vehicle, while the second camera 220 is powered by the second camera.

[0128] The embodiments of the present disclosure also provide a vehicle, comprising any one of the cabin fill light control systems provided in the above embodiments.

[0129] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0130] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling fill light in a cabin, characterized in that: The cabin includes a first camera, a second camera and a preset fill light arranged at intervals; the method includes: Obtaining the working status of the second camera; Based on the working state of the second camera, outputting the same pulse control signal to the preset fill light, and to the first camera and / or the second camera; Based on the same pulse control signal, controlling the fill light time of the preset fill light, and controlling the exposure time of the first camera and / or the exposure time of the second camera; The fill light time of the preset fill light is greater than the exposure time of the first camera and the exposure time of the second camera, so that fill light is performed within the corresponding exposure time.

2. The method according to claim 1, characterized in that The cabin also includes a target display screen, and the second camera is arranged on the target display screen; and obtaining the working state of the second camera includes: Acquire the working state of the target display screen; the working state of the target display screen includes the target display screen being turned on and the target display screen being turned off; Based on the target display screen being turned on, determining that the working state of the second camera is turned on; or based on the target display screen being turned off, determining that the working state of the second camera is turned off.

3. The method according to claim 2, characterized in that The obtaining of the working status of the target display screen comprises: Receiving a switch signal for the target display screen; the switch signal includes a screen on signal and a screen off signal; Based on the screen-on signal, it is determined that the target display screen is turned on, or based on the screen-off signal, it is determined that the target display screen is turned off.

4. The method according to claim 2, characterized in that The method of outputting the same pulse control signal to the preset fill light and to the first camera and / or the second camera based on the working state of the second camera includes: Based on the working state of the second camera being turned on, outputting the same pulse control signal to the first camera, the second camera and the preset fill light; or, Based on the working state of the second camera being off, the same pulse control signal is output to the first camera and the preset fill light.

5. The method according to claim 4, characterized in that The first camera and the second camera each include an electrically connected serializer, an image sensor, and an exposure light; and the outputting of the same pulse control signal to the first camera, the second camera, and the preset fill light includes: Outputting the same pulse control signal to the serializer in the first camera, the serializer in the second camera, and the preset fill light; Transmitting the same pulse control signal to the image sensor in the first camera and the image sensor in the second camera via the serializer in the first camera and the serializer in the second camera respectively; The same pulse control signal is transmitted to the exposure light in the first camera and the exposure light in the second camera correspondingly through the image sensor in the first camera and the image sensor in the second camera.

6. The method according to claim 2, characterized in that The controlling the fill light time of the preset fill light comprises: Obtaining the rising edge time and the falling edge time of the pulse control signal; Based on the rising edge moment and the falling edge moment, the preset fill light is controlled to turn on the fill light at the rising edge moment, and the fill light is controlled to turn off the fill light at the falling edge moment.

7. The method according to claim 6, characterized in that The controlling the exposure time of the first camera and / or the exposure time of the second camera includes: Based on the target display screen being turned on, controlling the first camera and the second camera to start exposure at or after the rising edge moment, and to stop exposure before the falling edge moment; or, Based on the target display screen being turned off, the first camera is controlled to start exposure at or after the rising edge moment, and to stop exposure before the falling edge moment.

8. The method according to claim 7, characterized in that The cabin further includes a first area, a second area, and a third area adjacent to each other, the first camera is close to the first area, and the second camera and the preset fill light are close to the second area; The controlling the first camera and the second camera to start exposure at the rising edge moment or after the rising edge moment, and to stop exposure before the falling edge moment, comprises: The first camera is controlled to expose the first area, the second camera is controlled to expose the second area and the third area, and the preset fill light is controlled to fill light the second area and the third area.

9. The method according to claim 8, characterized in that The controlling the first camera to start exposure at or after the rising edge moment, and to stop exposure before the falling edge moment, includes: The first camera is controlled to expose the first area, the second area, and the third area, and the preset fill light is controlled to fill light the first area, the second area, and the third area.

10. The method according to claim 7, characterized in that The step of closing the exposure before the falling edge moment comprises: Acquire an exposure target area image; Based on the exposure target area image, acquiring image brightness; It is determined that the image brightness reaches a preset brightness, and the exposure is turned off before the falling edge moment.

11. A cabin fill light control system, characterized in that: The system includes: a first camera, a second camera, a preset fill light and a controller that are electrically connected; the first camera, the second camera and the preset fill light are set at intervals; and the controller is used to execute the steps of the method as described in any one of claims 1-10.

12. The cabin fill light control system according to claim 11, characterized in that: The system also includes a target display screen, a first area, a second area, and a third area; The first area, the second area and the third area are arranged adjacent to each other; the first camera is close to the first area; The second camera is arranged on the target display screen and close to the second area; the preset fill light is arranged on a plane inside the cabin facing the second area.

13. The cabin fill light control system according to claim 11, characterized in that: The first camera and the second camera include a serializer, an image sensor, and an exposure light; The serializer is connected to the exposure lamp through the image sensor; The serializer is used to transmit a pulse control signal to the image sensor; and the image sensor is used to transmit the pulse control signal to the exposure lamp.

14. A vehicle, characterized in that: It comprises the cabin fill light control system as described in any one of claims 11 to 13.

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