Method and apparatus for adjusting display brightness of vehicle, device, and computer storage medium

Abstract

A method and apparatus for adjusting the display brightness of a vehicle, a device, and a computer storage medium. The method for adjusting the display brightness of a vehicle comprises: when it is predicted that a vehicle is about to travel into a sudden brightness change region, acquiring brightness change information of the sudden brightness change region, wherein the sudden brightness change region comprises a region having a brightness change greater than a brightness change threshold within a preset distance; and on the basis of the brightness change information, adjusting the display brightness of the vehicle before the vehicle travels into the sudden brightness change region, so that the display brightness changes monotonically, such that the display brightness of the vehicle when the vehicle travels at a target position matches the ambient brightness of the target position, wherein the target position is a position in the sudden brightness change region where the ambient brightness differs most from the ambient brightness before the sudden brightness change region.

Description

Display brightness adjustment method, device, equipment and computer storage medium of vehicle

[0001] The present disclosure claims priority to the Chinese patent application No. 202411381459.0, filed on September 30, 2024, and entitled "Display brightness adjustment method, device, equipment and computer storage medium of vehicle", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] Embodiments of the present disclosure relate to the field of display control technology, in particular to a display brightness adjustment method, device, equipment and computer storage medium of vehicle. BACKGROUND

[0003] With the development of technology, there are more and more displays on vehicles, especially head-up displays (HUD). The head-up display is generally used to display auxiliary driving information. The current brightness adjustment scheme applied to the head-up display basically uses a light sensor facing the front of the vehicle to collect ambient light intensity. When the change of ambient light intensity reaches a certain threshold, the system caches the collected data, and adjusts the brightness after filtering the data.

[0004] The existing vehicle HUD brightness adjustment system mainly relies on an ambient light sensor to detect external light conditions in real time and adjusts the brightness of the HUD accordingly. However, this method has the problems of response delay and non-smooth brightness adjustment, especially in the case of dramatic light changes, such as when the vehicle suddenly enters or exits a tunnel, which may cause the driver's visual discomfort. In addition, the existing system lacks the ability to predict upcoming light changes and cannot prepare in advance and smoothly adjust the brightness. SUMMARY

[0005] Therefore, the embodiments of the present disclosure expect to provide a display brightness adjustment method, device, equipment and computer storage medium of vehicle, which can solve the problem of non-smooth adjustment of display brightness in the prior art.

[0006] The technical solution of the embodiments of the present disclosure is as follows:

[0007] In a first aspect, the embodiments of the present disclosure provide a display brightness adjustment method of vehicle, comprising:

[0008] When it is predicted that the vehicle will soon enter a brightness sudden change area, the brightness change information of the brightness sudden change area is obtained, wherein the brightness sudden change area includes an area with a brightness change greater than a brightness change threshold within a preset distance;

[0009] adjust the display brightness of the vehicle according to the brightness change information before the vehicle enters the brightness abrupt change region, so that the display brightness monotonically changes, so that the display brightness of the vehicle when driving at the target position is adapted to the ambient brightness of the target position;

[0010] The target position is a position in the brightness abrupt change region, at which the ambient brightness differs most from the ambient brightness before the brightness abrupt change region.

[0011] In a second aspect, the embodiments of the present disclosure provide a display brightness adjustment device of a vehicle, comprising:

[0012] The acquisition module is configured to acquire brightness change information of a brightness abrupt change region when it is predicted that the vehicle is about to enter the brightness abrupt change region, wherein the brightness abrupt change region includes a region in which the brightness change is greater than a brightness change threshold within a preset distance;

[0013] The adjustment module is configured to adjust the display brightness of the vehicle according to the brightness change information before the vehicle enters the brightness abrupt change region, so that the display brightness monotonically changes, so that the display brightness of the vehicle when driving at the target position is adapted to the ambient brightness of the target position.

[0014] The target position is a position in the brightness abrupt change region, at which the ambient brightness differs most from the ambient brightness before the brightness abrupt change region.

[0015] In a third aspect, the embodiments of the present disclosure provide an electronic device, comprising a processor and a memory; the processor is configured to execute instructions stored in the memory to implement the display brightness adjustment method of the vehicle of the first aspect.

[0016] In a fourth aspect, the embodiments of the present disclosure provide a computer storage medium, the storage medium stores at least one instruction, the at least one instruction is configured to be executed by a processor to implement the display brightness adjustment method of the vehicle of the first aspect.

[0017] The embodiments of the present disclosure provide a display brightness adjustment method, device, equipment and computer storage medium of a vehicle; by predicting a brightness abrupt change region that the vehicle is about to enter and adjusting the display brightness of the vehicle in advance, a more smooth and adaptive environmental brightness transition is realized, so that the driving comfort is improved while ensuring the visual experience of the driver under various light conditions, the visual discomfort and driving risk caused by brightness mutation are reduced, and the driving safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] FIG. 1 is a schematic diagram of a vehicle-mounted system according to an embodiment of the present disclosure.

[0019] FIG. 2 is an exemplary top view of a vehicle, according to embodiments of the present disclosure.

[0020] FIG. 3 is an exemplary perspective view from a driver's seat of a vehicle, according to embodiments of the present disclosure.

[0021] FIG. 4 is an exemplary schematic diagram of an architecture of a head-up display device, according to embodiments of the present disclosure.

[0022] FIG. 5 is a flowchart of a display brightness adjustment method for a vehicle, according to embodiments of the present disclosure.

[0023] FIG. 6 is an exemplary diagram of a brightness variation of a first brightness peripheral region, according to embodiments of the present disclosure.

[0024] FIG. 7 is an exemplary diagram of a brightness variation of a second brightness peripheral region, according to embodiments of the present disclosure.

[0025] FIG. 8 is an exemplary diagram of a brightness variation of a third brightness peripheral region, according to embodiments of the present disclosure.

[0026] FIG. 9 is an exemplary diagram of a brightness variation of a fourth brightness peripheral region, according to embodiments of the present disclosure.

[0027] FIG. 10 is an exemplary diagram of an environmental brightness variation caused by an occlusion, according to embodiments of the present disclosure.

[0028] FIG. 11 is an exemplary diagram of a tunnel with different openings, according to embodiments of the present disclosure.

[0029] FIG. 12 is an exemplary diagram of a comparison of display brightness adjustment curves corresponding to different tunnels, according to embodiments of the present disclosure.

[0030] FIG. 13 is an exemplary diagram of a correlation between an adjustment start time and a tunnel exit, according to embodiments of the present disclosure.

[0031] FIG. 14 is an exemplary diagram of a comparison of display brightness adjustment between the present disclosure and related art, according to embodiments of the present disclosure.

[0032] FIG. 15 is an exemplary diagram of a positional relationship between a vehicle, a brightness peripheral region, and a target position, according to embodiments of the present disclosure.

[0033] FIG. 16 is an exemplary diagram of a positional relationship between a vehicle, a first position, a target position, and a second position, according to embodiments of the present disclosure.

[0034] FIG. 17 is an exemplary diagram of a comparison of display brightness adjustment between the present disclosure and related art, according to embodiments of the present disclosure.

[0035] FIG. 18 is an exemplary diagram of a linear correlation between display brightness and an occlusion range, according to embodiments of the present disclosure.

[0036] Figure 19 is a brightness adjustment curve of entering a tunnel in a related technology provided by an embodiment of this disclosure.

[0037] Figure 20 is a brightness adjustment curve for entering a tunnel according to an embodiment of this disclosure.

[0038] Figure 21 is a brightness adjustment curve of a vehicle exiting a tunnel in a related art according to an embodiment of this disclosure.

[0039] Figure 22 is a brightness adjustment curve of a vehicle exiting a tunnel according to an embodiment of this disclosure.

[0040] Figure 23 is a schematic diagram of the structure of a vehicle display brightness adjustment device provided in an embodiment of this disclosure.

[0041] Figure 24 is a schematic diagram of the structure of an electronic device provided in an embodiment of this disclosure.

[0042] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0043] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0044] As shown in Figure 1, the vehicle system 100 includes: a navigation subsystem 110, an environmental detection device group 120 for acquiring the vehicle's environment during vehicle operation, a vehicle driving status detection device group 130, a data processing unit 140, a display control unit 150, and a display unit 160. These components or device groups are coupled together via a communication bus 12. In some examples, the communication bus 12 is configured for communication between the components or device groups. It should be noted that Figure 1 only shows a portion of the vehicle system 100, and not all of its components.

[0045] In FIG. 1, the navigation subsystem 110 includes a positioning device 111 and a map information storage device 112. The positioning device 111 is capable of positioning the position of the host vehicle based on a positioning system such as a Global Positioning System (GPS), a Chinese Beidou system, a Russian GLONASS (GLObalnaya NAvigationnaya Sputnikovaya Sistema) system, a European Galileo system, a Japanese Quasi-Zenith Satellite System (QZSS), an Indian Indian Regional Navigation Satellite System (IRNSS), and the like, and obtaining position information of the host vehicle. The map information storage device 112 stores map information, is capable of acquiring a navigation route leading to a destination based on the position information obtained from the positioning device 111, and displaying the position information and the navigation route in a map application.

[0046] In FIG. 1, the environment detection device group 120 can include a vehicle-mounted communication device 121, a radar 122, a laser range finder 123, and a video camera 124. These devices are capable of acquiring environment data representing the surrounding environment of the host vehicle.

[0047] The vehicle-mounted communication device 121 can wirelessly communicate with one or more devices directly or via a communication network. The devices capable of communicating with the vehicle-mounted communication device 121 can be other vehicles, road side machines or roadside stations, mobile terminal devices used by an occupant of the host vehicle, and the like. In some examples, the vehicle-mounted communication device 121 can use 3G cellular communication such as Code Division Multiple Access (CDMA), EVD0, Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS), or 4G cellular communication such as Long Term Evolution (LTE), or 5G cellular communication. In some examples, the vehicle-mounted communication device 121 can also communicate with a Wireless Local Area Network (WLAN) using WiFi. In some embodiments, the vehicle-mounted communication device 121 can also communicate directly with devices using an infrared link, Bluetooth, or ZigBee. In some examples, the vehicle-mounted communication device 121 can also communicate with devices using other wireless protocols.

[0048] The radar 122 is configured to sense objects within the surrounding environment of the host vehicle, and can also be configured to sense the speed and / or the heading of the objects. In some examples, the radar 122 can use electromagnetic waves or laser as a medium, detect objects based on a Time Of Flight (TOF) method or a phase-shift method, and detect the position, distance, and relative speed of the detected objects. In some examples, in order to be able to detect objects located in front of, behind, or to the side of the host vehicle, the radar 122 can be configured at an appropriate position outside of the host vehicle.

[0049] The laser range finder 123 can use laser to sense objects in the environment in which the host vehicle is located. In some embodiments, the laser range finder 123 can include one or more laser sources, a laser scanner, and one or more detectors, as well as other system components. The laser range finder 123 can measure obstructions in the environment in which the vehicle is located.

[0050] The camera 124 can be configured to capture multiple images of the surrounding environment of the host vehicle. The camera 124 can be a still camera or a video camera. In some examples, in order to obtain images outside of the host vehicle, the camera 124 can be located at an appropriate position outside of the host vehicle. For example, in order to obtain images in front of the host vehicle, the camera 124 can be configured in close proximity to the front window inside the host vehicle. Alternatively, the camera 124 can be configured in the periphery of the front bumper or the radiator grille. In some examples, in order to obtain images behind the host vehicle, the camera 124 can be configured in close proximity to the rear window inside the host vehicle. Alternatively, the camera 124 can be configured in the periphery of the rear bumper, the trunk, or the tailgate. In some examples, in order to obtain images to the side of the host vehicle, the camera 124 can be configured in close proximity to at least one of the side windows inside the host vehicle. Alternatively, the camera 124 can be configured in the periphery of the side mirrors, the fenders, or the doors.

[0051] In FIG. 1, the vehicle travel state detection device group 130 can include a steering angle sensor 131 that detects the steering angle of the host vehicle, a vehicle speed sensor 132 that detects the travel speed of the host vehicle, and an acceleration sensor 133 that detects the acceleration applied to the host vehicle. In some examples, as shown by the dashed box, an inertial sensor 134 that detects changes in the position and orientation of the host vehicle based on inertial acceleration can also be included, which can be a combination of the acceleration sensor 133 and a gyroscope in a specific implementation.

[0052] In FIG. 1, the data processing portion 140 can be implemented as a computing system having a memory, a processor, an input / output interface, and a bus connecting these. In some examples, the data processing portion 140 causes the processor to execute a plurality of commands by program instructions stored in the memory to implement processing of data obtained by the navigation subsystem 110, the environmental detection device group 120, and the vehicle running state detection device group 130. In some examples, the data processing portion 140 can also control running of the host vehicle based in part or in whole on the processed data.

[0053] In FIG. 1, as shown by the dashed line box, the data processing portion 140, the display control portion 150, and the display portion 160 can be the main body of a head-up display (HUD) device 170. The display control portion 150 can process data received after processing by the data processing portion 140, or after receiving data obtained by the navigation subsystem 110, the environmental detection device group 120, and the vehicle running state detection device group 130, to obtain display information that needs to be displayed, and project the display information to the windshield of the host vehicle for display by the display portion 160.

[0054] A head-up display (HUD) device projects light rays of a display image output by an image source onto an imaging window (e.g., an imaging panel, a windshield, etc.) by, for example, a reflective optical design, to display vehicle state information such as vehicle speed, fuel level, etc., and indication information such as navigation, hazard warnings, etc., at an appropriate position in front of the driver, so that the driver can obtain relevant information such as vehicle speed, fuel level, etc., without deviating the line of sight from the front road, and thus improve the safety factor and driving experience of driving.

[0055] Specifically, referring to FIGS. 2 and 3, a head-up display device can be provided on a vehicle that includes a windshield 204 located at a front portion of the vehicle. A driver and passengers within a passenger cabin 208 of the vehicle can see a front of the vehicle through the windshield 204.

[0056] In FIG. 3, the windshield 204 is visually located above a vehicle dashboard 206. The driver can turn a steering wheel 210 within the passenger cabin 208 to steer the vehicle, for example, to change lanes, merge, and park the vehicle. In some embodiments, the steering wheel 210 can be stowed or omitted.

[0057] Referring to FIG. 3, the head-up display device 170 (see FIG. 4) projects display information 212 (e.g., virtual images) onto a portion of the windshield 204 through one or more apertures (e.g., aperture 216) in the instrument panel 206. While FIG. 4 illustrates an example size of the display information 212, the display information 212 can be presented on a larger or smaller area. Examples of the display information 212 include various vehicle information, such as a current vehicle speed, a current gear of a vehicle transmission, an engine speed, a direction of the vehicle, current infotainment system settings, and / or other vehicle information. The head-up display device 170 provides information to a driver of the vehicle without requiring the driver to remove his or her eyes from objects in front of the vehicle.

[0058] Referring to the example implementation architecture of the head-up display device 170 shown in FIG. 4, the display control section 150 generates a signal 42 based on data processed by the data processing section 140, or data 420 transmitted by the navigation subsystem 110, the environment detection device group 20, and the vehicle travel state detection device group 30. The communication control circuit described above is provided in the data processing section 140 and transmits display information to the display control section 150.

[0059] Optionally, the display control section 150 can acquire travel information and environmental data of the vehicle from the car machine. The travel information can be acquired from the car machine or a terminal connected to the car machine, and then at least one of the navigation data and the environmental data is taken as target display data according to the travel information, and the target display data and the travel information are sent to the display section together, and the display section projects and displays them on the windshield.

[0060] The display section 160 can include a light source 161 and a light path assembly 162. The light source 161 outputs light (e.g., virtual images) based on the signal 42 from the display control section 150 to display on the windshield 204. For example, the light source 161 can include one or more lasers and output red, green, and blue light.

[0061] The display section 160 is configured to receive the target display data and the travel information sent by the display control section and project them on the windshield.

[0062] The light path assembly 162 can reflect the output of the light source 161 onto the windshield 204 through the hole 216. A viewer (e.g., a driver) can view the display information 212 in a display area on which the display information 212 is projected onto the windshield 204. In some examples, the light path assembly 162 can include one or more than one mirror (flat mirror) and a concave mirror (magnifying mirror). The output of the light source 161 is reflected to the windshield 204 via the mirror and by the concave mirror after being folded back and magnified to form a virtual image 40 that can be visually observed by the driver, which presents a visual effect that the virtual image 40 is projected onto a projection surface 41 at a set distance in front of the vehicle, but passes through the projection surface 41, and the real environment remains visible. In some examples, the light path assembly 162 can also be omitted, and the light source 161 can project the display information 212 directly onto the windshield 204 to form the virtual image 40 on the projection surface 41.

[0063] In the related art display control method, during vehicle driving, the display control unit 150 receives the ambient brightness information determined by the environment detection device group 120, and controls the display brightness of the display unit 160 based on the ambient brightness information to control the brightness of the image projected onto the windshield 204. However, the existing method has the problems of response delay and non-smooth brightness adjustment, especially in the case of dramatic light changes, such as when the vehicle suddenly enters or exits a tunnel, which can cause visual discomfort for the driver. In addition, the existing system lacks the ability to predict upcoming light changes and cannot prepare in advance and smoothly adjust the brightness.

[0064] Based on this, the present disclosure first provides a display brightness adjustment method for a vehicle, and FIG. 5 shows a flowchart of the display brightness adjustment method for a vehicle, which can be applied to the above-mentioned display control unit 150, wherein the display brightness adjustment method can include steps S510 to S520.

[0065] In step S510, when it is predicted that the vehicle will soon enter a brightness sudden change area, the brightness change information of the brightness sudden change area is obtained.

[0066] The brightness sudden change area includes an area in which the brightness changes by more than a brightness change threshold within a preset distance.

[0067] In some examples, the display control unit 150 can monitor the road conditions in front of the vehicle through the above-mentioned environment detection device group 120, such as a laser radar or a camera, and analyze these data to predict potential brightness sudden change areas. The brightness sudden change area is defined as an area in which the brightness changes by more than a pre-set brightness change threshold within a preset distance in front of the vehicle. This threshold is set according to the actual driving conditions and safety requirements to identify those brightness changes that can have a significant impact on the driver's vision.

[0068] In some examples, the luminance change in the preset distance in the luminance abrupt change region is greater than a luminance change threshold. The preset distance can be a unit distance, such as 1 meter, 10 meters, or the like, or other distances, such as 1.5 meters, 2 meters, or the like. The luminance change threshold can be customized based on user needs, and can be, for example, 10 candela per square meter, 20 candela per square meter, or the like, and is not specifically limited in this example embodiment. For example, a region in which the luminance change value is greater than 10 candela per square meter within 1 meter can be regarded as the luminance abrupt change region.

[0069] Optionally, the display control unit can determine the luminance abrupt change region based on data sent by the environment detection device group 120. The data can include, but is not limited to, light intensity, weather conditions, information about surrounding buildings or other natural obstructions, and can also be combined with the real-time position and movement direction of the vehicle to predict whether the area the vehicle is about to enter will have a significant change in luminance.

[0070] Once it is predicted that the vehicle is about to enter the luminance abrupt change region, the display control unit can start collecting luminance change information of the luminance abrupt change region. The luminance change information can include luminance information of each unit distance in the luminance abrupt change region, and the luminance change law in the luminance abrupt change region.

[0071] In step S520, the display luminance of the vehicle is adjusted based on the luminance change information before the vehicle enters the luminance abrupt change region, so that the display luminance monotonically changes, and the display luminance of the vehicle when driving to the target position is adapted to the environmental luminance of the target position.

[0072] After obtaining the luminance change information, a luminance adjustment plan can be made before the vehicle enters the luminance abrupt change region, and the display luminance of the vehicle is adjusted. Specifically, the luminance adjustment plan can cause the display luminance of the vehicle to monotonically change, that is, gradually increase or gradually decrease, and the change of the environmental luminance can be determined according to the needs.

[0073] The luminance adjustment plan can cause the display luminance of the vehicle when driving to the target position to be adapted to the environmental luminance of the target position. The mapping relationship between the display luminance and the environmental luminance can be pre-set and stored in the memory. When adjusting, the corresponding display luminance can be found in the mapping relationship according to the environmental luminance. The mapping relationship includes a plurality of environmental luminances and display luminances adapted to the environmental luminances.

[0074] The target position is a position in the luminance abrupt change region where the environmental luminance is most different from the environmental luminance before the luminance abrupt change region.

[0075] It should be noted that the display brightness can be the display brightness of the HUD, or the display brightness of a display screen such as a car machine, or the display brightness of a display screen in the back seat of the vehicle, which is not specifically limited in the example embodiment.

[0076] The display brightness adjustment method of the vehicle provided by the example embodiment of the present disclosure realizes a more smooth and adaptive brightness transition by predicting the brightness sudden change region that the vehicle is about to enter and adjusting the display brightness of the vehicle in advance, thereby improving driving comfort while ensuring the visual experience of the driver under various light conditions, reducing visual discomfort and driving risk caused by brightness mutation, and improving driving safety.

[0077] In some example embodiments of the present disclosure, the brightness change of the brightness sudden change region can be monotonic or non-monotonic. For example, referring to FIG. 6, when the brightness of the brightness sudden change region is monotonically decreasing, the brightness in the brightness sudden change region can be decreasing. Referring to FIG. 7, the brightness of the brightness sudden change region can also be increasing. At this time, the target position is the position farthest from the vehicle in the brightness sudden change region, i.e., the position where the brightness sudden change region ends. Referring to FIG. 8, when the brightness change of the brightness sudden change region is non-monotonic, the brightness of the brightness sudden change region can first decrease and then increase. Referring to FIG. 9, the brightness of the brightness sudden change region can first increase and then decrease. At this time, the target position is the position corresponding to the brightness peak in the brightness sudden change region. The change of the brightness can be linear or non-linear, and the specific change method is determined according to the shape of the occlusion and the degree of occlusion of the light, which is not described herein.

[0078] It should be noted that the generation of the brightness sudden change region can be caused by the occlusion of the light by buildings or other occlusions. For example, referring to FIG. 10, the occlusion can be a tunnel, a high-rise building, a tree, etc., which is not specifically limited in the example. The light can be natural light or artificially manufactured light such as a light, a fire, etc., which is not described herein.

[0079] In some examples, the display brightness of the vehicle is adjusted when the vehicle travels to a first position, where the first position is between the current position of the vehicle and the abrupt brightness change region, for example, referring to FIG. 10 again, the first position is between the shadow of the high-rise building and the vehicle. The ambient brightness within a preset range of the first position is equal within a threshold range. The preset range can be 10 meters, 20 meters, etc., which is not described in detail in the example embodiment. The threshold range is an acceptable error range, which can be a percentage difference between the two, such as 5%, 6%, etc., or a specific brightness value, such as 2 candela per square meter, 3 candela per square meter, etc. For example, when the ambient brightness within the preset range of the first position is within 5% of the difference, it can be determined that the ambient brightness within the preset range of the first position is equal. Alternatively, when the maximum difference in ambient brightness within the preset range of the first position is less than 3 candela per square meter, it is determined that the ambient brightness within the preset range of the first position is equal.

[0080] Optionally, the first position can be determined according to the vehicle speed and the distance between the vehicle and the abrupt brightness change region. In addition, the ambient brightness of the target position can also be considered in determining the first position, and the specific determination method is not described in detail here.

[0081] In some examples, when determining the above-mentioned abrupt brightness change region, the vehicle driving route can be determined in combination with the navigation information to determine the occlusion within a first preset distance from the vehicle. The influence of the occlusion on the environment is determined according to the current time and the current weather information to determine the abrupt brightness change region. For example, when the above-mentioned building is a tunnel, the size of the abrupt brightness change region is related to the relative position of the sun and the tunnel entrance and the size of the tunnel entrance and exit.

[0082] Referring to FIG. 11, it is assumed that the vehicle travels in different tunnels, and the exit of tunnel 1 is larger than the exit of tunnel 2. The brightness change at the exit of the tunnel can be obtained with reference to FIG. 12, and the length of the abrupt brightness change region of tunnel 1 is greater than the length of the abrupt brightness change region of tunnel 2.

[0083] That is, when the above-mentioned occlusion is a tunnel, the above-mentioned abrupt brightness change region can be determined based on the current time and the current weather information and the size of the tunnel entrance and exit.

[0084] Optionally, when the above-mentioned abrupt brightness change region is obtained, the predicted ambient brightness within a second preset distance from the vehicle in the vehicle driving route can also be obtained. The ambient brightness can be obtained by using a sensor, and the specific obtaining method is not described in detail in the example embodiment.

[0085] After the acquisition of the abrupt brightness area is completed, the display brightness of the vehicle can be adjusted before the vehicle enters the abrupt brightness area, specifically, the display brightness of the vehicle can be adjusted starting from the first position, and after the vehicle travels to the target position, the display brightness of the vehicle is adapted to the ambient brightness of the target position.

[0086] Optionally, referring to FIG. 13, when the above-mentioned shelter is a tunnel, the distance between the above-mentioned first position and the tunnel entrance is positively correlated with the size of the entrance of the tunnel. For example, the corresponding correlation curve can be referred to FIG. 13.

[0087] For example, when the vehicle is adjusting the brightness, referring to FIG. 14, the adjustment method in the related art is to start adjusting the display brightness of the vehicle when entering the abrupt brightness area, and the adjustment curve is S1. The present disclosure starts adjusting before the vehicle enters the abrupt brightness area, and the adjustment curve is S2. By comparing S1 and S2, the adjustment method of the display brightness of the present disclosure can make the adjustment more smooth.

[0088] During the adjustment, the maximum brightness difference of the abrupt brightness area can be determined first, and then the display brightness of the vehicle is adjusted before the vehicle enters the abrupt brightness area according to the maximum brightness difference, so that the display brightness changes monotonically.

[0089] Specifically, the first distance between the vehicle and the abrupt brightness area and the second distance between the vehicle and the target position can be determined first, and then the display brightness of the vehicle is adjusted according to the first distance, the second distance and the maximum brightness difference.

[0090] For example, referring to FIG. 15, the first time when the vehicle enters the abrupt brightness area and the second time when the vehicle travels to the target position P can be determined based on the driving speed and the first distance d1 and the second distance d2, and then the adjustment start time and the unit adjustment brightness are determined based on the first time and the second time. The unit adjustment brightness is the value of the display brightness adjusted in a unit of time.

[0091] The determination of the start time can be based on the first time and the second time. The difference between the first time and the second time can be determined, and then an advance coefficient can be determined. The advance coefficient can be customized according to user needs, for example, 0.5, 0.6, etc. The advance time can be determined according to the difference and the advance coefficient, and then the start time can be determined according to the first time and the advance time. After the start time is determined, the adjustment time can be determined based on the second time and the start time, and then the unit adjustment brightness can be determined based on the adjustment time and the maximum brightness difference.

[0092] Optionally, when the brightness adjustment process is linear adjustment, the unit adjustment brightness can be obtained by dividing the maximum brightness difference by the adjustment time; when the brightness adjustment process is nonlinear adjustment, the brightness adjustment curve can be fitted based on the display brightness of the target position, the display brightness at the beginning of adjustment, the maximum brightness difference, and the brightness adjustment time to obtain the unit adjustment brightness corresponding to each time, so that the display control part adjusts the display brightness of the vehicle according to the unit adjustment brightness.

[0093] In some examples, when the brightness change in the brightness sudden change region is non-monotonic change, the brightness sudden change region can be divided into a first sub-region and a second sub-region, wherein the first sub-region and the second sub-region are continuous, and the brightness change trend of the first sub-region is opposite to that of the second sub-region, and the target position is located at the boundary of the first sub-region and the second sub-region.

[0094] The display brightness adjustment method can also include adjusting the display brightness when the vehicle travels to the target position, so that the display brightness of the vehicle changes monotonically, so that the display brightness of the vehicle when traveling to the second position is adapted to the ambient brightness of the second position, wherein the second position is located away from the vehicle on one side of the brightness sudden change region, and the ambient brightness in the preset range of the second position is equal within the threshold range, wherein the specific values of the preset range and the threshold range can be referred to the description of the first position, and will not be repeated here, and can also be customized according to user needs, which will not be repeated in this example embodiment.

[0095] In some examples, referring to FIG. 16, the vehicle starts adjusting the display brightness at the first position A, completes the first stage of brightness adjustment at the target position P, and then starts adjusting the display brightness from the target position P, and completes the adjustment of the display brightness at the second position B. The corresponding brightness adjustment curve is shown in FIG. 17, wherein S3 represents the adjustment process of the display brightness in the prior art, and S4 represents the adjustment process of the display brightness of the vehicle according to the present disclosure. As can be seen from the comparison between S3 and S4, the adjustment process of the display brightness adjustment method of the vehicle according to the present disclosure is smoother.

[0096] Optionally, taking the adjustment of the display brightness of the HUD as an example, referring to FIG. 18, the larger the shielding range, the lower the display brightness, and the adjustment of the display brightness will be adjusted before the shielding, which can make the adjustment of the real brightness smoother.

[0097] The display brightness adjustment method of the vehicle provided by the embodiments of the present disclosure can predict the brightness sudden change region that the vehicle will enter and adjust the display brightness of the vehicle in advance, so as to realize a smoother and more adaptive brightness transition, thereby improving the driving comfort while ensuring the visual experience of the driver under various light conditions, reducing the visual discomfort and driving risk caused by sudden brightness change, and improving the driving safety.

[0098] Taking the adjustment of the HUD display brightness as an example, when entering a tunnel, referring to FIG. 19 and FIG. 20, FIG. 19 is a display brightness adjustment curve in the related art, and FIG. 20 is an adjustment curve of the display brightness of the present disclosure. By comparing FIG. 19 and FIG. 20, it can be obtained that the present disclosure has started the brightness adjustment before entering the tunnel, and after entering the tunnel, the brightness has been adjusted to adapt to the display brightness in the tunnel, and the smoothness of the brightness adjustment in the present disclosure is higher, and the change rate of the adjustment process is slow, which can improve the driving comfort while ensuring the visual experience of the driver under various light conditions, reducing the visual discomfort and driving risk caused by the sudden change of brightness, and improving the driving safety.

[0099] When driving out of the tunnel, referring to FIG. 21 and FIG. 22, FIG. 21 is a display brightness adjustment curve in the related art, and FIG. 22 is an adjustment curve of the display brightness of the present disclosure. By comparing FIG. 21 and FIG. 22, it can be obtained that the present disclosure has started the brightness adjustment before driving out of the tunnel, and after driving out of the tunnel, the brightness has been adjusted to adapt to the display brightness outside the tunnel, and the smoothness of the brightness adjustment in the present disclosure is higher, and the change rate of the adjustment process is slow, which can improve the driving comfort while ensuring the visual experience of the driver under various light conditions, reducing the visual discomfort and driving risk caused by the sudden change of brightness, and improving the driving safety.

[0100] Further, the present disclosure also provides a display brightness adjustment device of a vehicle, referring to FIG. 23, the display brightness adjustment device 2300 of the vehicle can include an acquisition module 2310 and an adjustment module 2320. Wherein:

[0101] The acquisition module 2310 can be configured to acquire the brightness change information of the brightness sudden change area when it is predicted that the vehicle will soon drive into the brightness sudden change area, wherein the brightness sudden change area includes an area with a brightness change greater than a brightness change threshold within a preset distance.

[0102] The adjustment module 2320 can be configured to adjust the display brightness of the vehicle before the vehicle drives into the brightness sudden change area according to the brightness change information so that the display brightness changes monotonically, so that the display brightness when the vehicle drives at the target position is adapted to the ambient brightness of the target position; wherein the target position is a position in the brightness sudden change area where the ambient brightness is most different from the ambient brightness before the brightness sudden change area.

[0103] The acquisition module 2310 can be configured to determine the degree of change of the ambient brightness by the shelter according to the current time and the current weather information to predict the brightness change information of the brightness sudden change area.

[0104] In some examples, the adjusting module 2320 can be further configured to adjust the display brightness of the vehicle when the vehicle travels to a first position, wherein the first position is between the current position of the vehicle and the brightness abrupt change region, and the ambient brightness within a preset range of the first position is equal within a threshold range.

[0105] In some examples, the adjusting module 2320 can be further configured to obtain a maximum brightness difference of the brightness abrupt change region; and adjust the display brightness of the vehicle before the vehicle enters the brightness abrupt change region according to the maximum brightness difference, so that the display brightness changes monotonically.

[0106] In some examples, the adjusting module 2320 can be further configured to predict a first distance between the vehicle and the brightness abrupt change region, and a second distance between the vehicle and the target position; and adjust the display brightness of the vehicle before the vehicle enters the brightness abrupt change region according to the first distance, the second distance and the maximum brightness difference.

[0107] In some examples, the adjusting module 2320 can be further configured to obtain a driving speed of the vehicle, and determine an adjustment start time and a unit adjustment brightness based on the driving speed, the first distance and the second distance; and adjust the display brightness of the vehicle according to the adjustment start time and the unit adjustment brightness value.

[0108] In some examples, the brightness abrupt change region includes a first sub-region and a second sub-region which are continuous, and the brightness change trends of the first sub-region and the second sub-region are opposite; the target position is between the first sub-region and the second sub-region; and the display brightness adjusting device 2300 of the vehicle can be further configured to adjust the display brightness when the vehicle travels to the target position, so that the display brightness changes monotonically, so that the display brightness of the vehicle when traveling to a second position is adapted to the ambient brightness of the second position; the second position is on a side of the brightness abrupt change region away from the vehicle, and the ambient brightness within a preset range of the second position is equal within a threshold range.

[0109] In some examples, the display brightness adjusting device 2300 of the vehicle can be further configured to determine the brightness abrupt change region according to the navigation information and the current weather information.

[0110] In some examples, the display brightness adjusting device 2300 of the vehicle can be further configured to determine an occlusion within a first preset distance of the vehicle in a driving route of the vehicle according to the navigation information; and determine a degree of change of the ambient brightness caused by the occlusion according to the current time and the current weather information to determine the brightness abrupt change region.

[0111] In some examples, the display brightness adjusting device 2300 of the vehicle can be further configured to obtain a predicted ambient brightness within a second preset distance of the vehicle in a driving route of the vehicle; and determine the brightness abrupt change region according to the predicted ambient brightness.

[0112] It should be understood that the above-described apparatus embodiments are merely illustrative, and the apparatus of the present disclosure can also be implemented in other manners. For example, the division of units / modules in the above-described embodiments is merely a logical function division, and there can be another division manner in actual implementation. For example, a plurality of units / modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0113] In addition, each functional unit / module in each embodiment of the present disclosure can be integrated into one unit / module, or each unit / module can exist physically, or two or more units / modules can be integrated together. The integrated unit / module can be implemented in the form of hardware or in the form of a software program module.

[0114] If the integrated unit / module is implemented in the form of hardware, the hardware can be a digital circuit, an analog circuit, etc. The physical implementation of the hardware structure includes but is not limited to transistors, memristors, etc. Unless otherwise specified, the processor can be any appropriate hardware processor, such as a CPU, a GPU, an FPGA, a DSP, an ASIC, etc. Unless otherwise specified, the storage unit can be any appropriate magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory (RRAM), a dynamic random access memory (DRAM), a static random access memory (SRAM), an enhanced dynamic random access memory (EDRAM), a high-bandwidth memory (HBM), a hybrid memory cube (HMC), etc.

[0115] If the integrated units / modules are implemented in the form of software program modules and sold or used as independent products, they can be stored in a computer readable memory. Based on such understanding, the technical solutions of the present disclosure, essentially or in part, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a memory and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods in the embodiments of the present disclosure. The memory includes various memories including a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0116] Referring to FIG. 8, a structural block diagram of an electronic device according to an example embodiment of the present disclosure is shown. In some examples, the electronic device can be at least one of a smartphone, a smart watch, a desktop computer, a laptop computer, a virtual reality terminal, an augmented reality terminal, a wireless terminal, and a laptop computer. The electronic device has a communication function and can access a wired network or a wireless network. The electronic device can refer to one of a plurality of terminals, and a person skilled in the art can know that the number of terminals can be more or less. It can be understood that the electronic device undertakes the calculation and processing work of the technical solutions of the present disclosure, and the embodiments of the present disclosure do not limit this.

[0117] As shown in FIG. 24, the electronic device 2400 can include at least one processor 2410, a memory 2420, and a communication interface 2430.

[0118] The memory 2420 is configured to store a program. Specifically, the program can include program code including computer operation instructions.

[0119] The memory 2420 can include a high-speed RAM memory and can also include a non-volatile memory such as at least one disk memory.

[0120] The processor 2410 is configured to execute the computer execution instructions stored in the memory 2420 to implement the display brightness adjustment method of the vehicle described in the foregoing method embodiments. The processor 2410 can be a central processing unit (CPU) or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present disclosure.

[0121] The electronic device 2400 can further include a communication interface 2430, so as to communicate with external devices through the communication interface 2430. In a specific implementation, if the communication interface 2430, the memory 2420 and the processor 2410 are independently implemented, the communication interface 2430, the memory 2420 and the processor 2410 can be connected with each other through a bus and complete communication between each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc., but it does not mean that there is only one bus or one type of bus.

[0122] Optionally, in a specific implementation, if the communication interface 2430, the memory 2420 and the processor 2410 are integrated on a chip, the communication interface 2430, the memory 2420 and the processor 2410 can complete communication through an internal interface.

[0123] The present disclosure also provides a computer readable storage medium, which can include a U disk, a mobile hard disk, a read-only memory random access memory, a magnetic disk or an optical disk and various media that can store program codes, and specifically, the computer readable storage medium stores program instructions, and the program instructions are used for the display brightness adjustment method of the vehicle in the above embodiments.

[0124] The present disclosure further provides a computer program product, which includes computer instructions stored in a computer readable storage medium; a processor of an electronic device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the electronic device executes the display brightness adjustment method of the vehicle in the above embodiments.

[0125] Those skilled in the art should realize that, in one or more examples described above, the functions described in the embodiments of the present disclosure can be implemented by hardware, software, firmware or any combination thereof. When implemented by software, the functions can be stored in a computer readable medium or transmitted as one or more instructions or codes on a computer readable medium. The computer readable medium includes a computer storage medium and a communication medium, wherein the communication medium includes any medium that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that can be accessed by a general or special purpose computer.

[0126] In the above embodiments, the description of each embodiment is focused on one aspect, and the part not described in detail in a certain embodiment can be referred to the relevant description of other embodiments. Each technical feature of the above embodiments can be combined arbitrarily, and in order to make the description brief, each technical feature in the above embodiments is not described in all possible combinations, however, as long as the combination of these technical features does not exist contradictory, it should be considered as the scope of the disclosure.

[0127] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. The disclosure is intended to cover any variations, uses or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure that come within known

[0128] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated in the drawings and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A method for adjusting display brightness of a vehicle, comprising: obtaining brightness change information of a brightness abrupt change region when the vehicle is predicted to enter the brightness abrupt change region, wherein the brightness abrupt change region comprises a region in which brightness changes by more than a brightness change threshold within a preset distance; adjusting display brightness of the vehicle before the vehicle enters the brightness abrupt change region according to the brightness change information, so that the display brightness monotonically changes, so that the display brightness when the vehicle is at a target position is adapted to ambient brightness of the target position; wherein the target position is a position in the brightness abrupt change region in which ambient brightness differs most from ambient brightness before the brightness abrupt change region.

2. The method of claim 1, wherein, adjusting display brightness of the vehicle before the vehicle enters the brightness abrupt change region according to the brightness change information, comprises: adjusting display brightness of the vehicle when the vehicle is at a first position, wherein the first position is between a current position of the vehicle and the brightness abrupt change region, and ambient brightness within a preset range of the first position is equal within a threshold range.

3. The method of claim 1, wherein, the brightness abrupt change region comprises a first sub-region and a second sub-region which are continuous, and brightness change trends of the first sub-region and the second sub-region are opposite; the target position is at a boundary between the first sub-region and the second sub-region; the method further comprises: adjusting the display brightness when the vehicle is at the target position, so that the display brightness monotonically changes, so that the display brightness when the vehicle is at a second position is adapted to ambient brightness of the second position; the second position is on a side of the brightness abrupt change region away from the vehicle, and ambient brightness within a preset range of the second position is equal within a threshold range.

4. The method of claim 1, wherein, the method further comprises: determining the brightness abrupt change region according to navigation information and current weather information.

5. The method of claim 4, wherein, the determining the brightness abrupt change region according to the navigation information and the current weather information comprises: determining an occlusion within a first preset distance of a vehicle travel route according to the navigation information; determining a degree of change of ambient brightness caused by the occlusion according to a current time and the current weather information to determine the brightness abrupt change region.

6. The method of claim 5, wherein, the obtaining brightness change information of the brightness abrupt change region comprises: determining the degree of change of ambient brightness caused by the occlusion according to the current time and the current weather information to predict the brightness change information of the brightness abrupt change region.

7. The method of claim 1, wherein, the method further comprises: obtaining predicted ambient brightness within a second preset distance of the vehicle travel route; determining the brightness abrupt change region according to the predicted ambient brightness.

8. The method of claim 1, wherein, the adjusting display brightness of the vehicle before the vehicle enters the brightness abrupt change region according to the brightness change information, so that the display brightness monotonically changes, comprises: obtaining a maximum brightness difference of the brightness abrupt change region; adjusting display brightness of the vehicle before the vehicle enters the brightness abrupt change region according to the maximum brightness difference, so that the display brightness monotonically changes.

9. The method of claim 8, wherein, the adjusting display brightness of the vehicle before the vehicle enters the brightness abrupt change region according to the maximum brightness difference, comprises: predict a first distance between the vehicle and the abrupt brightness change region, and a second distance between the vehicle and the target position; adjust a display brightness of the vehicle before the vehicle enters the abrupt brightness change region according to the first distance, the second distance, and the maximum brightness difference.

10. The method of claim 9, wherein, adjusting a display brightness of the vehicle before the vehicle enters the abrupt brightness change region according to the first distance, the second distance, and the maximum brightness difference, comprises: obtaining a driving speed of the vehicle, and determining an adjustment start time and a unit adjustment brightness value based on the driving speed, the first distance, and the second distance; adjusting the display brightness of the vehicle according to the adjustment start time and the unit adjustment brightness value.

11. A display brightness adjustment apparatus of a vehicle, comprising: an obtaining module configured to obtain brightness change information of an abrupt brightness change region when it is predicted that the vehicle is about to enter the abrupt brightness change region, wherein the abrupt brightness change region comprises a region in which a brightness change is greater than a brightness change threshold within a preset distance; an adjustment module configured to adjust a display brightness of the vehicle before the vehicle enters the abrupt brightness change region according to the brightness change information so that the display brightness monotonically changes, so that the display brightness when the vehicle is at a target position is adapted to an ambient brightness of the target position; wherein the target position is a position in the abrupt brightness change region in which the ambient brightness differs most from an ambient brightness before the abrupt brightness change region.

12. An electronic device, comprising: a processor and a memory; the processor is configured to execute instructions stored in the memory to implement the display brightness adjustment method of the vehicle according to any one of claims 1 to 10.

13. A computer storage medium, the storage medium storing at least one instruction configured to be executed by a processor to implement the display brightness adjustment method of the vehicle according to any one of claims 1 to 10.

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