Electronic rearview mirror display screen brightness adjusting method, device and equipment and medium

Abstract

The embodiment of the invention provides an electronic rearview mirror display screen brightness adjusting method, device and equipment and a medium, an electronic rearview mirror at least comprises a video acquisition unit, a light sensor and a display screen, and the method comprises the following steps: receiving video stream data acquired by the video acquisition unit for an environment outside a vehicle, and determining first brightness of the environment outside the vehicle; acquiring second brightness of the environment in the vehicle acquired by the light sensor; and determining the target brightness of the display screen according to the first brightness and the second brightness, and adjusting the brightness of the display screen to the target brightness. By utilizing the method, the target brightness of the display screen is comprehensively determined and adjusted based on the brightness of the environment outside the vehicle and the brightness of the environment inside the vehicle by optimizing the brightness adjusting strategy of the display screen of the electronic rearview mirror, the brightness of the display screen can be reasonably adjusted under the condition that hardware does not need to be changed to increase the cost, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a method, device, equipment and medium for adjusting the brightness of an electronic rearview mirror display screen. Background Art

[0002] An electronic rearview mirror is an indirect vision device that obtains a specified field of view through a system composed of a camera and a monitor. It includes electronic devices such as a high-definition camera, a main control unit, a light sensor, and a display screen, and is a new type of rearview mirror that can replace traditional optical rearview mirrors. Currently, the electronic rearview mirror solutions on the market mainly collect the ambient brightness through the light sensor inside the vehicle and adjust the display screen independently.

[0003] However, it will cause the following problems: 1) In an environment with low illuminance, the ambient brightness collected by the light sensor is also relatively small, and the display screen will be reduced to the lowest brightness, which may cause the driver and passengers to be unable to see clearly the content displayed on the display screen; 2) When sunlight shines directly on the light sensor, the collected ambient brightness will also increase, and the display screen will correspondingly increase the brightness to the highest. When the sunlight does not shine directly, the display screen will reduce the brightness; when there is a situation where the sunlight shines directly for a while and does not shine directly for a while, the display screen will become bright and dark, causing discomfort to the driver. Summary of the Invention

[0004] Embodiments of the present invention provide a method, device, equipment, medium and product for adjusting the brightness of an electronic rearview mirror display screen, which realizes reasonable adjustment of the brightness of the display screen without changing the hardware and increasing the cost, and improves the user experience.

[0005] In a first aspect, an embodiment of the present invention provides a method for adjusting the brightness of an electronic rearview mirror display screen. The electronic rearview mirror at least includes a video acquisition unit, a light sensor, and a display screen. The method includes:

[0006] Receiving the video stream data collected by the video acquisition unit for the external environment of the vehicle, and determining the first brightness of the external environment of the vehicle;

[0007] Obtaining the second brightness collected by the light sensor for the internal environment of the vehicle;

[0008] Determining the target brightness of the display screen according to the first brightness and the second brightness, and adjusting the brightness of the display screen to the target brightness.

[0009] In a second aspect, an embodiment of the present invention provides an apparatus for adjusting the brightness of an electronic rearview mirror display screen. The electronic rearview mirror at least includes a video acquisition unit, a light sensor, and a display screen. The apparatus includes:

[0010] The first brightness determination module is configured to receive the video stream data collected by the video acquisition unit for the external environment of the vehicle, and determine the first brightness of the external environment of the vehicle;

[0011] The second brightness acquisition module is configured to acquire the second brightness collected by the light sensor for the internal environment of the vehicle;

[0012] The brightness adjustment module is configured to determine the target brightness of the display screen according to the first brightness and the second brightness, and adjust the brightness of the display screen to the target brightness.

[0013] In a third aspect, this embodiment provides an electronic device, including:

[0014] At least one processor; and

[0015] A memory communicatively connected to the at least one processor; wherein,

[0016] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for adjusting the brightness of the electronic rearview mirror display screen according to any embodiment of the present invention.

[0017] In a fourth aspect, this embodiment provides a computer-readable storage medium, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for adjusting the brightness of the electronic rearview mirror display screen according to any embodiment of the present invention.

[0018] This embodiment of the present invention provides a method, device, equipment and medium for adjusting the brightness of an electronic rearview mirror display screen. The electronic rearview mirror at least includes a video acquisition unit, a light sensor and a display screen. The method includes: receiving the video stream data collected by the video acquisition unit for the external environment of the vehicle, and determining the first brightness of the external environment of the vehicle; acquiring the second brightness collected by the light sensor for the internal environment of the vehicle; according to the first brightness and the second brightness, determining the target brightness of the display screen, and adjusting the brightness of the display screen to the target brightness. Different from the prior art in which only the brightness of the internal environment is collected by the light sensor inside the vehicle to adjust the brightness of the display screen, the above technical solution first collects the external environment based on the video acquisition unit, determines the brightness of the external environment based on the collected video stream data of the external environment of the vehicle, and at the same time, collects the brightness of the internal environment based on the light sensor; then, by optimizing the brightness adjustment strategy of the electronic rearview mirror display screen, the target brightness of the display screen is comprehensively determined and adjusted based on the brightness of the external environment and the brightness of the internal environment. Without changing the hardware and increasing the cost, the brightness of the display screen can be reasonably adjusted, improving the user experience. It solves the problem of abnormal brightness display in an environment with low illuminance or when the sun's rays are bright and dark.

[0019] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description.

[0020] Currently, the electronic rearview mirror solutions on the market mainly collect the ambient brightness through the light sensor in the vehicle and adjust the display screen separately, which will cause the following two problems: 1) In an environment with low illuminance, the ambient brightness collected by the light sensor is also relatively small, and the display screen will be reduced to the lowest brightness. If the lowest brightness is set unreasonably, or in some extreme cases (such as a small road without street lights), it will be difficult to see the road conditions captured by the camera on the display screen; 2) When the sun shines directly on the light sensor, the ambient brightness collected at this time will become very large, and the display screen will correspondingly increase the brightness to the highest. When the sun does not shine directly, the display screen will reduce the brightness; when driving, sometimes when the sun shines directly and then does not shine directly, the display screen will become bright and dark, causing discomfort to the driver. Exemplarily, Figure 1 is a schematic diagram of a simple structure of an electronic rearview mirror of a vehicle in the prior art, as Figure 1 shown, the simple structure of the electronic rearview mirror of the vehicle includes: a display screen 1, a light sensor 2, a main control unit 3, and a camera 4. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is a schematic diagram of the structure of an electronic rearview mirror of a vehicle in the prior art;

[0023] Figure 2 is a schematic flow chart of a method for adjusting the brightness of an electronic rearview mirror display screen provided in Embodiment 1 of the present invention;

[0024] Figure 3 is a schematic flow chart of another method for adjusting the brightness of an electronic rearview mirror display screen provided in Embodiment 2 of the present invention;

[0025] Figure 4 is a schematic structural diagram of a device for adjusting the brightness of an electronic rearview mirror display screen provided in Embodiment 3 of the present invention;

[0026] Figure 5 is a schematic structural diagram of an electronic device provided in Embodiment 4 of the present invention. Detailed implementation mode

[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] Embodiment 1

[0030] Figure 2 As shown in the figure, it is a schematic flowchart of a method for adjusting the brightness of an electronic rearview mirror display screen provided in Embodiment 1 of the present invention. This method is applicable to the situation of adjusting the brightness of the electronic rearview mirror display screen. This method can be executed by an electronic rearview mirror display screen brightness adjustment device. The electronic rearview mirror display screen brightness adjustment device can be implemented in the form of hardware and / or software and is generally integrated in an electronic device.

[0031] As Figure 2 shown, a method for adjusting the brightness of an electronic rearview mirror display screen provided in Embodiment 1 of the present invention may specifically include the following steps:

[0032] S101. Receive the video stream data collected by the video acquisition unit for the external environment of the vehicle, and determine the first brightness of the external environment of the vehicle.

[0033] The application scenario of this embodiment can be described as adjusting the brightness of the electronic rearview mirror display screen according to the brightness of the actual environment, so that the display screen can be displayed at an appropriate brightness, thereby ensuring that the content displayed on the display screen can be clearly presented to the driver and passengers. In this embodiment, the process of realizing the brightness adjustment of the electronic rearview mirror display screen does not require changing the hardware, and the existing electronic rearview mirror can be used to realize the brightness adjustment of the display screen. The electronic rearview mirror at least includes a video acquisition unit, a light sensor, and a display screen.

[0034] Different from the brightness adjustment of most electronic rearview mirror displays in the prior art, which is based on an in-vehicle light sensor to automatically adjust the brightness of the display screen, in this embodiment, the brightness of the electronic rearview mirror display screen is adjusted by comprehensively considering the brightness of the in-vehicle environment and the brightness of the out-of-vehicle environment. The brightness of the out-of-vehicle environment is denoted as the first brightness, and the brightness of the out-of-vehicle environment is determined based on the video stream data collected by the video acquisition unit in the electronic rearview mirror for the out-of-vehicle environment. Specifically, the video acquisition unit collects the video of the out-of-vehicle environment in real time to obtain video stream data. Then the executing entity can receive the video stream data collected by the video acquisition unit and determine the brightness of the out-of-vehicle environment as the first brightness by processing the video stream data.

[0035] Exemplarily, the electronic rearview mirror display adjustment method provided in this embodiment can be arranged in the main control unit of the electronic rearview mirror. The main control unit has an Image Signal Processor (ISP) chip to receive the video stream data collected by the video acquisition unit. Exemplarily, the video acquisition unit can adopt a camera. In this example, the main control unit can be regarded as the executing entity of this method. The automatic white balance function of the ISP can count the overall brightness of the video stream data and take this brightness as the first brightness of the out-of-vehicle environment.

[0036] S102. Obtain the second brightness collected by the light sensor for the in-vehicle environment.

[0037] In this embodiment, in addition to obtaining the first brightness of the out-of-vehicle environment, it is also necessary to obtain the brightness of the in-vehicle environment, which is denoted as the second brightness. The electronic rearview mirror includes a light sensor, and based on the light sensor, the brightness of the in-vehicle environment can be collected to obtain the second brightness.

[0038] S103. Determine the target brightness of the display screen according to the first brightness and the second brightness, and adjust the brightness of the display screen to the target brightness.

[0039] Different from the prior art in which only the second brightness is used to adjust the brightness of the display screen of the electronic rearview mirror, in this embodiment, both the brightness of the in-vehicle environment and the brightness of the out-of-vehicle environment are considered, and a set brightness adjustment strategy is adopted to select whether to adjust the brightness of the display screen based on the brightness of the in-vehicle environment or based on the brightness of the out-of-vehicle environment. In this embodiment, the finally determined brightness to which the display screen is to be adjusted is denoted as the target brightness.

[0040] In this embodiment, the light scene at the current moment can be determined based on the first brightness of the external environment and the second brightness of the internal environment of the vehicle. The light scene can be divided into a normal light scene and an abnormal light scene. The normal light scene can be understood as a scene with relatively normal light illuminance, and the abnormal light scene can be understood as a scene with less normal light illuminance, such as a low illuminance scene, a scene where the light directly hits the light sensor, and a scene where the light directly hits the video acquisition unit.

[0041] Continuing with the above description, for the normal light scene, the brightness of the display screen of the electronic rearview mirror can be adjusted based on the second brightness of the internal environment collected by the light sensor. For example, a mapping relationship can be set between the second brightness of the internal environment and the brightness of the display screen, so as to determine the target brightness of the display screen based on the second brightness of the internal environment and the mapping relationship, and adjust the brightness of the display screen to the target brightness.

[0042] In this embodiment, for the abnormal light scene, an appropriate brightness reference can be selected according to the specific light scene to adjust the brightness of the display screen. Exemplarily, if the light scene is a low light scene, the first brightness of the external environment is used as the brightness adjustment reference, and combined with the set brightness percentage range, the target brightness of the display screen is determined; if the light scene is a scene where the light directly hits the light sensor, the first brightness is used as the brightness adjustment reference, and combined with the set brightness percentage range, the target brightness of the display screen is determined; if the light scene is a scene where the light directly hits the video acquisition unit, the second brightness of the internal environment is used as the brightness adjustment reference, and combined with the set brightness percentage range, the target brightness of the display screen is determined. Then, the brightness of the display screen is adjusted to the target brightness.

[0043] Different from the prior art where only the brightness of the internal environment is collected by the light sensor inside the vehicle to adjust the brightness of the display screen, the above technical solution first collects the external environment of the vehicle based on the video acquisition unit, determines the brightness of the external environment based on the collected video stream data of the external environment of the vehicle, and at the same time, collects the brightness of the internal environment based on the light sensor; then, by optimizing the brightness adjustment strategy of the electronic rearview mirror display screen, the target brightness of the display screen is comprehensively determined and adjusted based on the brightness of the external environment and the brightness of the internal environment. Without changing the hardware and increasing costs, the brightness of the display screen can be reasonably adjusted, improving the user experience. It solves the problem of abnormal brightness display in an environment with low illuminance or when the sunlight is bright and dark.

[0044] Embodiment 2

[0045] Figure 3It is a schematic flowchart of another method for adjusting the brightness of an electronic rearview mirror display screen provided in the second embodiment of the present invention. This embodiment is a further optimization of the above embodiment. In this embodiment, the limitation of "receiving the video stream data collected by the video acquisition unit for the external environment of the vehicle and determining the first brightness of the external environment" is further optimized, and the limitation of "determining the target brightness of the display screen according to the first brightness and the second brightness" is optimized.

[0046] As Figure 3 shown, the second embodiment of the present invention provides a method for adjusting the brightness of an electronic rearview mirror display screen, which specifically includes the following steps:

[0047] S201. Receive the video stream data collected by the video acquisition unit for the external environment of the vehicle.

[0048] In this embodiment, the video acquisition unit collects the video of the external environment in real time to obtain the video stream data, and then the execution subject can receive the video stream data collected by the video acquisition unit. Exemplarily, the method for adjusting the display of the electronic rearview mirror provided in this embodiment can be arranged in the main control unit of the electronic rearview mirror. The main control unit has an image signal processor chip ISP to receive the video stream data collected by the video acquisition unit.

[0049] S202. Determine the overall brightness of the video stream data as the first brightness of the external environment.

[0050] In this embodiment, the brightness of the external environment is determined by processing the video stream data and is denoted as the first brightness. Continuing with the above example, the automatic white balance function of the ISP can count the overall brightness of the video stream data and use this brightness as the first brightness of the external environment.

[0051] S203. Obtain the second brightness collected by the light sensor for the internal environment of the vehicle.

[0052] S204. Determine the lighting scene at the current moment according to the first brightness and the second brightness.

[0053] In this embodiment, the lighting scene at the current moment can be determined first based on the first brightness of the external environment and the second brightness of the internal environment. The lighting scene can be divided into a conventional lighting scene and an unconventional lighting scene. Among them, the conventional lighting scene can be understood as a scene with relatively conventional light illuminance, and the unconventional lighting scene can be understood as a scene with less conventional light illuminance, such as a low illuminance scene, a scene where the light directly shines on the light sensor, and a scene where the light directly shines on the video acquisition unit.

[0054] As a specific implementation method, the step of determining the lighting scene at the current moment can be optimized, including:

[0055] If the first brightness is within the first brightness range and the second brightness is within the second brightness range, then determine that the lighting scene at the current moment is a low illuminance scene; if the first brightness is within the third brightness range and the second brightness is within the fourth brightness range, then determine that the lighting scene at the current moment is a direct sunlight on light sensor scene; if the first brightness is within the fourth brightness range and the second brightness is within the third brightness range, then determine that the lighting scene at the current moment is a direct sunlight on video acquisition unit scene; otherwise, determine that the lighting scene at the current moment is a normal lighting scene.

[0056] Among them, the second brightness range is smaller than the first brightness range, the first brightness range is smaller than the third brightness range, and the third brightness range is smaller than the fourth brightness range.

[0057] In this embodiment, the first brightness range, the second brightness range, the third brightness range, and the fourth brightness range can be determined according to the actual situation. For example, the second brightness range is less than 10 (cd / m 2 ), the first brightness range is 100 - 200 (cd / m 2 ), the third brightness range is 1000 - 5000 (cd / m 2 ), and the fourth brightness range is 65535 (cd / m 2 ).

[0058] Continuing with the above description, in this embodiment, based on what brightness range the first brightness of the external environment of the vehicle is in, and what brightness range the second brightness of the internal environment of the vehicle is in, to determine the lighting scene at the current moment. If the first brightness is within the first brightness range and the second brightness is within the second brightness range, it indicates that both the first brightness and the second brightness are relatively low, but the first brightness is greater than the second brightness, that is, the brightness of the external environment of the vehicle is greater than the brightness of the internal environment of the vehicle, then determine that the lighting scene at the current moment is a low illuminance scene, such as a small road without lights at night, and the brightness of the external environment of the vehicle is generated by the headlight illumination.

[0059] If the first brightness is within the third brightness range and the second brightness is within the fourth brightness range, and the fourth brightness range is greater than the third brightness range and the brightness of the fourth brightness range is extremely high, it means that the current sunlight is directly shining on the light sensor, then determine that the lighting scene at the current moment is a direct sunlight on light sensor scene.

[0060] If the first brightness is within the fourth brightness range and the second brightness is within the third brightness range, and the fourth brightness range is greater than the third brightness range and the brightness of the fourth brightness range is extremely high, it means that the current sunlight is directly shining on the video acquisition unit, then determine that the lighting scene at the current moment is a direct sunlight on video acquisition unit scene.

[0061] Exemplarily, Table 1 shows an example of an unconventional lighting scenario provided by an embodiment of the present invention. As shown in Table 1, the unconventional lighting scenario includes: a low illuminance scenario (i.e., an extremely low illuminance environment, a dark path at night without lights), a direct light sensor scenario (i.e., sunlight directly shining on the light sensor), and a direct video capture unit scenario (i.e., sunlight directly shining on the camera). The first luminance is 100 - 200 (cd / m 2 ), and the second luminance is 10 (cd / m 2 ), then it is a low illuminance scenario; the first luminance is 1000 - 5000 (cd / m 2 ), and the second luminance is 65535 (cd / m 2 ), then it is a direct light sensor scenario; the first luminance is 65535 (cd / m 2 ), and the second luminance is 1000 - 5000 (cd / m 2 ), then it is a direct video capture unit scenario.

[0062] Table 1

[0063]

[0064] S205. If the lighting scenario is a conventional lighting scenario, then use the second luminance as the luminance adjustment reference to determine the target luminance of the display screen.

[0065] In this embodiment, if the lighting scenario is a conventional lighting scenario, then the second luminance of the in-vehicle environment can be used as the luminance adjustment reference. A mapping relationship can be set between the second luminance of the in-vehicle environment and the luminance of the display screen. Thus, based on the second luminance of the in-vehicle environment and the mapping relationship, the target luminance of the display screen is determined to adjust the luminance of the display screen to the target luminance.

[0066] S206. If the lighting scenario is an unconventional lighting scenario, then determine the target luminance of the display screen according to the first luminance and the second luminance, in combination with a preset luminance adjustment strategy.

[0067] In this embodiment, for an unconventional lighting scenario, an appropriate luminance reference can be selected according to the specific lighting scenario to adjust the luminance of the display screen. Exemplarily, if the lighting scenario is a low light scenario, then use the first luminance of the out-of-vehicle environment as the luminance adjustment reference, and in combination with the set luminance percentage range, determine the target luminance of the display screen; if the lighting scenario is a direct light sensor scenario, then use the first luminance as the luminance adjustment reference, and in combination with the set luminance percentage range, determine the target luminance of the display screen; if the lighting scenario is a direct video capture unit scenario, then use the second luminance of the in-vehicle environment as the luminance adjustment reference, and in combination with the set luminance percentage range, determine the target luminance of the display screen. Then adjust the luminance of the display screen to the target luminance.

[0068] The above technical solution embodies the steps of determining the brightness of the external environment of the vehicle and determining the target brightness of the display screen according to the first brightness and the second brightness. By optimizing the software of the electronic rearview mirror, the user experience can be improved without changing the hardware and increasing costs. In an environment with low illuminance, such as in some extreme cases (such as a small road without street lights), after optimization, the road conditions collected by the camera can be clearly seen on the display screen; when sunlight shines directly on the light sensor or the camera, the situation where the display screen brightness is abnormal due to too strong light in a short time can be avoided.

[0069] As a specific implementation, it is possible to optimize the determination of the target brightness of the display screen according to the first brightness and the second brightness, in combination with a preset brightness adjustment strategy, including:

[0070] a1) If the illumination scene is a low-illumination scene, use the first brightness as a reference for brightness adjustment, and combine it with the first brightness percentage range to determine the target brightness of the display screen.

[0071] In this embodiment, if the first brightness is within the first brightness range and the second brightness is within the second brightness range, it indicates that both the first brightness and the second brightness are low, but the first brightness is greater than the second brightness, that is, the brightness of the external environment of the vehicle is greater than the brightness of the internal environment of the vehicle. Then, the target brightness of the display screen can be adjusted based on the first brightness of the external environment as a reference for brightness adjustment. Exemplarily, a mapping relationship can be set between the first brightness of the external environment and the brightness of the display screen, so as to determine the target brightness of the display screen based on the first brightness of the external environment and the mapping relationship. Referring to Table 1, the first brightness percentage range can be set to 30% - 40%.

[0072] As a specific implementation, it is possible to optimize the step of using the first brightness as a reference for brightness adjustment and combining it with the first brightness percentage range to determine the target brightness of the display screen, including:

[0073] a11) Determine the brightness proportion of the first brightness within the first brightness range.

[0074] Specifically, the value range of the first brightness range is known. After determining the first brightness of the external environment of the vehicle, the proportion of the first brightness within the first brightness range can be determined, denoted as the brightness proportion. The brightness proportion can be understood as the brightness level of the brightness.

[0075] a12) Determine the target brightness percentage of the display screen according to the first brightness percentage range and the brightness proportion.

[0076] Specifically, the first brightness percentage range is set. When the brightness level of the internal environment brightness is known, the brightness level of the display screen can be made the same as the brightness level of the internal environment brightness, denoted as the target brightness percentage of the display screen.

[0077] a13) Multiply the maximum brightness of the display screen by the target brightness percentage to determine the target brightness of the display screen.

[0078] In this embodiment, after knowing the maximum brightness of the display screen and the target brightness percentage, the result obtained by multiplying the two can be recorded as the target brightness of the display screen.

[0079] The above technical solution concretizes the steps of determining the target brightness of the display screen based on the brightness adjustment reference and the set brightness percentage range.

[0080] b1) If the lighting scenario is a direct light sensor scenario, use the first brightness as the brightness adjustment reference, and combine it with the second brightness percentage range to determine the target brightness of the display screen.

[0081] Among them, the first brightness percentage range is smaller than the second brightness percentage range.

[0082] In this embodiment, using the first brightness as the brightness adjustment reference and combining it with the second brightness percentage range to determine the target brightness of the display screen includes: determining the brightness proportion of the first brightness within the third brightness range; determining the target brightness percentage of the display screen according to the second brightness percentage range and the brightness proportion; multiplying the maximum brightness of the display screen by the target brightness percentage to determine the target brightness of the display screen. Exemplarily, continuing to refer to Table 1, the second brightness percentage range is 50% - 80%.

[0083] c1) If the lighting scenario is a direct video capture unit scenario, use the second brightness as the brightness adjustment reference, and combine it with the second brightness percentage range to determine the target brightness of the display screen.

[0084] In this embodiment, using the second brightness as the brightness adjustment reference and combining it with the second brightness percentage range to determine the target brightness of the display screen includes: determining the brightness proportion of the second brightness within the third brightness range; determining the target brightness percentage of the display screen according to the second brightness percentage range and the brightness proportion; multiplying the maximum brightness of the display screen by the target brightness percentage to determine the target brightness of the display screen. Exemplarily, continuing to refer to Table 1, the second brightness percentage range is 50% - 80%. In this embodiment, the first brightness percentage range is smaller than the second brightness percentage range because the ambient brightness of the low - light scenario is much lower than that of the direct light sensor scenario and the direct video capture unit scenario. Therefore, the brightness of the display screen in the low - light scenario is set lower, with a smaller brightness percentage range used, while the brightness of the display screen in the direct light sensor scenario and the direct video capture unit scenario is higher, and a larger brightness percentage range is used.

[0085] The above technical solution concretizes the steps of determining the target brightness of the display screen according to the first brightness and the second brightness in an unconventional lighting scenario, and realizes that according to different lighting scenarios, the brightness of the vehicle environment or the brightness of the external environment of the vehicle is selected as a reference to determine the target brightness of the display screen, so as to adjust the display screen based on the target brightness. It is realized that in an environment with low illuminance, the road conditions collected by the camera can be clearly seen on the display screen; when the sun shines directly on the light sensor or the camera, the situation of abnormal display screen brightness caused by too strong light in a short time can be avoided, improving the user experience.

[0086] Embodiment III

[0087] Figure 4 FIG. is a schematic structural diagram of an electronic rearview mirror display screen brightness adjustment device provided in Embodiment III of the present invention. This device is applicable to the situation of adjusting the brightness of the electronic rearview mirror display screen. The electronic rearview mirror display screen brightness adjustment device can be implemented in the form of hardware and / or software and is generally integrated in an electronic device. The electronic rearview mirror at least includes a video acquisition unit, a light sensor, and a display screen, as Figure 4 shown, the device includes: a first brightness determination module 31, a second brightness acquisition module 32, and a brightness adjustment module 33, wherein,

[0088] The first brightness determination module 31 is configured to receive the video stream data collected by the video acquisition unit for the external environment of the vehicle and determine the first brightness of the external environment of the vehicle;

[0089] The second brightness acquisition module 32 is configured to acquire the second brightness collected by the light sensor for the internal environment of the vehicle;

[0090] The brightness adjustment module 33 is configured to determine the target brightness of the display screen according to the first brightness and the second brightness, and adjust the brightness of the display screen to the target brightness.

[0091] Different from the prior art in which the brightness of the internal environment of the vehicle is collected by a light sensor inside the vehicle to adjust the brightness of the display screen, the above technical solution first collects the external environment based on the video acquisition unit, determines the brightness of the external environment based on the collected video stream data of the external environment of the vehicle, and at the same time, collects the brightness of the internal environment of the vehicle based on the light sensor; then, by optimizing the brightness adjustment strategy of the electronic rearview mirror display screen, the target brightness of the display screen is comprehensively determined and adjusted based on the brightness of the external environment and the brightness of the internal environment of the vehicle. Without changing the hardware and increasing costs, the brightness of the display screen can be reasonably adjusted, improving the user experience. The problem of abnormal brightness display caused by low illuminance or sudden changes in sunlight is solved.

[0092] Optionally, the first brightness determination module 31 is specifically configured to:

[0093] Receive the video stream data collected by the vehicle exterior environment video acquisition unit;

[0094] Determine the overall brightness of the video stream data as the first brightness of the vehicle exterior environment.

[0095] Optionally, the brightness adjustment module 33 may include:

[0096] A scene determination unit for determining the illumination scene at the current moment according to the first brightness and the second brightness;

[0097] A conventional adjustment unit for, if the illumination scene is a conventional illumination scene, using the second brightness as a brightness adjustment reference to determine the target brightness of the display screen;

[0098] An unconventional adjustment unit for, if the illumination scene is an unconventional illumination scene, determining the target brightness of the display screen according to the first brightness and the second brightness in combination with a preset brightness adjustment strategy.

[0099] Optionally, the scene determination unit is specifically configured to:

[0100] If the first brightness is within the first brightness range and the second brightness is within the second brightness range, determine that the illumination scene at the current moment is a low illumination scene;

[0101] If the first brightness is within the third brightness range and the second brightness is within the fourth brightness range, determine that the illumination scene at the current moment is a direct light sensor scene;

[0102] If the first brightness is within the fourth brightness range and the second brightness is within the third brightness range, determine that the illumination scene at the current moment is a direct video acquisition unit scene;

[0103] Otherwise, determine that the illumination scene at the current moment is a conventional illumination scene;

[0104] Wherein, the second brightness range is less than the first brightness range is less than the third brightness range is less than the fourth brightness range.

[0105] Optionally, the unconventional adjustment unit is specifically configured to:

[0106] If the illumination scene is a low light scene, use the first brightness as a brightness adjustment reference and combine it with the first brightness percentage range to determine the target brightness of the display screen;

[0107] If the illumination scene is a direct light sensor scene, use the first brightness as a brightness adjustment reference and combine it with the second brightness percentage range to determine the target brightness of the display screen;

[0108] If the lighting scenario is a direct video capture unit scenario, then use the second brightness as the reference for brightness adjustment, and determine the target brightness of the display screen in combination with the second brightness percentage range.

[0109] Optionally, the steps for the non-conventional adjustment unit to use the first brightness as the reference for brightness adjustment and determine the target brightness of the display screen in combination with the first brightness percentage range include:

[0110] Determine the brightness proportion of the first brightness within the first brightness range;

[0111] Determine the target brightness percentage of the display screen according to the first brightness percentage range and the brightness proportion;

[0112] Multiply the maximum brightness of the display screen by the target brightness percentage to determine the target brightness of the display screen.

[0113] Optionally, the first brightness percentage range is less than the second brightness percentage range.

[0114] The electronic rearview mirror display screen brightness adjustment device provided by the embodiments of the present invention can execute the electronic rearview mirror display screen brightness adjustment method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the method.

[0115] Embodiment 4

[0116] Figure 5 The structural schematic diagram of an electronic device provided by Embodiment 4 of the present invention. The electronic device is intended to represent various forms of digital computers, such as, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The components shown herein, their connections and relationships, and their functions are only examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0117] As Figure 5 shown, the electronic device 40 includes at least one processor 41, and a memory communicatively connected to at least one processor 41, such as a read-only memory (ROM) 42, a random access memory (RAM) 43, etc. Among them, the memory stores a computer program executable by at least one processor. The processor 41 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 42 or the computer program loaded from the storage unit 48 into the random access memory (RAM) 43. In the RAM 43, various programs and data required for the operation of the electronic device 40 can also be stored. The processor 41, the ROM 42, and the RAM 43 are connected to each other through a bus 44. The input / output (I / O) interface 45 is also connected to the bus 44.

[0118] Multiple components in the electronic device 40 are connected to the I / O interface 45, including: an input unit 46, such as a keyboard, a mouse, etc.; an output unit 47, such as various types of displays, speakers, etc.; a storage unit 48, such as a disk, an optical disc, etc.; and a communication unit 49, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0119] The processor 41 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 41 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 41 executes the various methods and processes described above, such as the electronic rearview mirror display brightness adjustment method.

[0120] In some embodiments, the electronic rearview mirror display brightness adjustment method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as the storage unit 48. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 40 via the ROM 42 and / or the communication unit 49. When the computer program is loaded into the RAM 43 and executed by the processor 41, one or more steps of the electronic rearview mirror display brightness adjustment method described above can be executed. Alternatively, in other embodiments, the processor 41 can be configured to execute the electronic rearview mirror display brightness adjustment method by any other suitable means (e.g., by means of firmware).

[0121] The various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special or general programmable processor, and can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0122] A computer program for implementing the method of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer programs are executed by the processor, the functions / operations specified in the flowchart and / or block diagram are implemented. The computer programs can be executed entirely on the machine, partially on the machine, executed partially on the machine and partially on a remote machine as an independent software package, or executed entirely on a remote machine or server.

[0123] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0124] To provide interaction with a user, the systems and techniques described herein can be implemented on a vehicle that has: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which the user can provide input to the vehicle. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0125] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0126] A computing system can include a client and a server. The client and the server are generally far from each other and typically interact through a communication network. The client-server relationship is created by computer programs that run on respective computers and have a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system, solving the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0127] An embodiment of the present invention also provides a computer program product, including a computer program, which when executed by a processor, implements the method for adjusting the brightness of an electronic rearview mirror display screen provided in any embodiment of the present invention.

[0128] In the process of implementing the computer program product, computer program code for performing the operations of the present disclosure can be written in one or more programming languages or combinations thereof. The above-mentioned programming languages include, but are not limited to, object-oriented programming languages - such as Java, Smalltalk, C++, and also include conventional procedural programming languages - such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network - including a local area network (LAN) or a wide area network (WAN) - or can be connected to an external computer (e.g., by using an Internet service provider to connect through the Internet).

[0129] It should be understood that the various forms of processes shown above can be used, with steps reordered, added or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0130] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub - combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for adjusting the brightness of an electronic rearview mirror display screen, wherein the electronic rearview mirror at least includes a video acquisition unit, a light sensor, and a display screen, characterized in that, The method includes: Receiving the video stream data collected by the video acquisition unit for the external environment of the vehicle, and determining the first brightness of the external environment; Obtaining the second brightness collected by the light sensor for the internal environment of the vehicle; Determining the target brightness of the display screen according to the first brightness and the second brightness, and adjusting the brightness of the display screen to the target brightness.

2. The method according to claim 1, wherein The receiving the video stream data collected by the video acquisition unit for the external environment of the vehicle and determining the first brightness of the external environment includes: Receiving the video stream data collected by the video acquisition unit for the external environment of the vehicle; Determining the overall brightness of the video stream data as the first brightness of the external environment.

3. The method according to claim 1, characterized in that, The determining the target brightness of the display screen according to the first brightness and the second brightness includes: Determining the illumination scenario at the current moment according to the first brightness and the second brightness; If the illumination scenario is a conventional illumination scenario, using the second brightness as a reference for brightness adjustment to determine the target brightness of the display screen; If the illumination scenario is an unconventional illumination scenario, determining the target brightness of the display screen according to the first brightness and the second brightness in combination with a preset brightness adjustment strategy.

4. The method according to claim 3, characterized in that, The determining the illumination scenario at the current moment according to the first brightness and the second brightness includes: If the first brightness is within the first brightness range and the second brightness is within the second brightness range, determining that the illumination scenario at the current moment is a low illuminance scenario; If the first brightness is within the third brightness range and the second brightness is within the fourth brightness range, determining that the illumination scenario at the current moment is a direct light sensor scenario; If the first brightness is within the fourth brightness range and the second brightness is within the third brightness range, determining that the illumination scenario at the current moment is a direct video acquisition unit scenario; Otherwise, determining that the illumination scenario at the current moment is a conventional illumination scenario; Wherein, the second brightness range is less than the first brightness range is less than the third brightness range is less than the fourth brightness range.

5. The method according to claim 3, wherein The determining the target brightness of the display screen according to the first brightness and the second brightness in combination with a preset brightness adjustment strategy includes: If the illumination scenario is a low light scenario, using the first brightness as a reference for brightness adjustment, and determining the target brightness of the display screen in combination with the first brightness percentage range; If the illumination scenario is a direct light sensor scenario, using the first brightness as a reference for brightness adjustment, and determining the target brightness of the display screen in combination with the second brightness percentage range; If the illumination scenario is a direct video acquisition unit scenario, using the second brightness as a reference for brightness adjustment, and determining the target brightness of the display screen in combination with the second brightness percentage range.

6. The method according to claim 5, wherein The using the first brightness as a reference for brightness adjustment and determining the target brightness of the display screen in combination with the first brightness percentage range includes: Determining the brightness proportion of the first brightness within the first brightness range; Determining the target brightness percentage of the display screen according to the first brightness percentage range and the brightness proportion; Multiplying the maximum brightness of the display screen by the target brightness percentage to determine the target brightness of the display screen.

7. The method according to claim 5, characterized in that The first brightness percentage range is smaller than the second brightness percentage range.

8. An electronic rearview mirror display brightness adjustment device, characterized in that, The electronic rearview mirror at least includes a video acquisition unit, a light sensor, and a display screen, and is characterized in that the device includes: A first brightness determination module, configured to receive the video stream data collected by the video acquisition unit for the external environment of the vehicle, and determine the first brightness of the external environment of the vehicle; A second brightness acquisition module, configured to acquire the second brightness collected by the light sensor for the internal environment of the vehicle; A brightness adjustment module, configured to determine the target brightness of the display screen according to the first brightness and the second brightness, and adjust the brightness of the display screen to the target brightness.

9. An electronic device, characterized in that, including: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor, so that the at least one processor can execute the method for adjusting the brightness of the display screen of the electronic rearview mirror according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions, and the computer instructions are used to implement the method for adjusting the brightness of the display screen of the electronic rearview mirror according to any one of claims 1-7 when executed by a processor.

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