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

Abstract

Embodiments of the present disclosure disclose a method, apparatus, device, and computer storage medium for adjusting the display brightness of a vehicle. The method for adjusting the display brightness of a vehicle may include: when it is predicted that the vehicle is about to enter a region with a sudden change in brightness, obtaining the brightness change information of the region with a sudden change in brightness, where the region with a sudden change in brightness includes a region where the brightness change is greater than the brightness change threshold within a preset distance; adjusting the display brightness of the vehicle before the vehicle enters the region with a sudden change in brightness according to the brightness change information so that the display brightness changes monotonically, so that the display brightness when the vehicle is driving at the target position adapts to the ambient brightness of the target position; where the target position is the position where the ambient brightness in the region with a sudden change in brightness differs most from the ambient brightness before the region with a sudden change in brightness.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the field of display control technologies, and in particular, to a method, device, equipment, and computer storage medium for adjusting the display brightness of a vehicle. Background Art

[0002] With the development of technologies, there are more and more displays on vehicles, especially the Head Up Display (HUD). The head-up display is generally used to display assisted driving information. Currently, the brightness adjustment solutions applied to the head-up display basically use a light sensor facing directly in front of the vehicle to collect the ambient light intensity. When the change in the ambient light intensity reaches a certain threshold, the system caches the collected data and performs brightness adjustment after filtering the data.

[0003] Existing vehicle HUD brightness adjustment systems mainly rely on ambient light sensors to detect external light conditions in real time and adjust the brightness of the HUD accordingly. However, this method has problems of response delay and uneven brightness adjustment. Especially in the case of drastic light changes, such as when the vehicle suddenly enters or exits a tunnel, it may cause visual discomfort to 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. Summary of the Invention

[0004] In view of this, embodiments of the present disclosure are expected to provide a method, device, equipment, and computer storage medium for adjusting the display brightness of a vehicle; which can solve the problem of insufficiently smooth adjustment of the display brightness in the prior art.

[0005] The technical solution of the embodiments of the present disclosure is implemented as follows:

[0006] In a first aspect, embodiments of the present disclosure provide a method for adjusting the display brightness of a vehicle, including:

[0007] When it is predicted that the vehicle is about to drive into a region with a sudden change in brightness, obtain the brightness change information of the region with a sudden change in brightness, where the region with a sudden change in brightness includes a region where the brightness change is greater than a brightness change threshold within a preset distance;

[0008] Adjust the display brightness of the vehicle before the vehicle drives into the region with a sudden change in brightness according to the brightness change information such that the display brightness changes monotonically, so that the display brightness when the vehicle travels to the target position adapts to the ambient brightness of the target position;

[0009] where the target position is the position where the ambient brightness in the region with a sudden change in brightness differs most from the ambient brightness before the region with a sudden change in brightness.

[0010] In a second aspect, an embodiment of the present disclosure provides a display brightness adjustment device for a vehicle, including:

[0011] An acquisition module, configured to acquire brightness change information of a brightness sudden change area when it is predicted that the vehicle is about to drive into the brightness sudden change area, where the brightness sudden change area includes an area where the brightness change is greater than a brightness change threshold within a preset distance;

[0012] An adjustment module, 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 of the vehicle when driving at a target position adapts to the ambient brightness of the target position;

[0013] Wherein, the target position is the position where the ambient brightness in the brightness sudden change area differs most from the ambient brightness before the brightness sudden change area.

[0014] In a third aspect, an embodiment of the present disclosure provides an electronic device, the electronic device includes: a processor and a memory; the processor is configured to execute instructions stored in the memory to implement the vehicle display brightness adjustment method described in the first aspect.

[0015] In a fourth aspect, an embodiment of the present disclosure provides a computer storage medium, the storage medium stores at least one instruction, and the at least one instruction is used to be executed by a processor to implement the vehicle display brightness adjustment method as described in the first aspect.

[0016] The embodiments of the present disclosure provide a vehicle display brightness adjustment method, device, equipment and computer storage medium; by predicting the brightness sudden change area that the vehicle is about to enter and adjusting the display brightness of the vehicle in advance, a smoother and environment-adaptive brightness transition is achieved, thereby improving driving comfort while ensuring the driver's visual experience under various light conditions, reducing visual discomfort and driving risks caused by sudden brightness changes, and enhancing driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the composition of an in-vehicle system provided by an embodiment of the present disclosure.

[0018] Figure 2 It is an exemplary top view of a vehicle provided by the present disclosure.

[0019] Figure 3 It is an exemplary perspective view from the driver's seat of a vehicle provided by the present disclosure.

[0020] Figure 4 It is a schematic diagram of the architecture of a head-up display device provided by the present disclosure.

[0021] Figure 5 Flowchart of a method for adjusting the display brightness of a vehicle provided by an embodiment of the present disclosure.

[0022] Figure 6 Schematic diagram of the brightness change in the first brightness peripheral area provided by an embodiment of the present disclosure.

[0023] Figure 7 Schematic diagram of the brightness change in the second brightness peripheral area provided by an embodiment of the present disclosure.

[0024] Figure 8 Schematic diagram of the brightness change in the third brightness peripheral area provided by an embodiment of the present disclosure.

[0025] Figure 9 Schematic diagram of the brightness change in the fourth brightness peripheral area provided by an embodiment of the present disclosure.

[0026] Figure 10 Schematic diagram of the environmental brightness change caused by an occluder provided by an embodiment of the present disclosure.

[0027] Figure 11 Schematic diagram of a tunnel with different openings provided by an embodiment of the present disclosure.

[0028] Figure 12 Comparison chart of display brightness adjustment curves corresponding to different tunnels provided by an embodiment of the present disclosure.

[0029] Figure 13 Relevant curve graph of the adjustment start time and the tunnel exit provided by an embodiment of the present disclosure.

[0030] Figure 14 Comparison chart of display brightness adjustment between the present disclosure and related technologies provided by an embodiment of the present disclosure.

[0031] Figure 15 Position relationship diagram between a vehicle, a brightness peripheral area, and a target position provided by an embodiment of the present disclosure.

[0032] Figure 16 Position relationship diagram between a vehicle, a first position, a target position, and a second position provided by an embodiment of the present disclosure.

[0033] Figure 17 Another comparison chart of display brightness adjustment between the present disclosure and related technologies provided by an embodiment of the present disclosure.

[0034] Figure 18 Relevant linear curve graph between the display brightness and the occlusion range provided by an embodiment of the present disclosure.

[0035] Figure 19A brightness adjustment curve graph for entering a tunnel in a related art provided by an embodiment of the present disclosure.

[0036] Figure 20 A brightness adjustment curve graph for entering a tunnel in the present disclosure provided by an embodiment of the present disclosure.

[0037] Figure 21 A brightness adjustment curve graph for exiting a tunnel in a related art provided by an embodiment of the present disclosure.

[0038] Figure 22 A brightness adjustment curve graph for exiting a tunnel in the present disclosure provided by an embodiment of the present disclosure.

[0039] Figure 23 A schematic structural diagram of a display brightness adjustment device for a vehicle provided by an embodiment of the present disclosure.

[0040] Figure 24 A schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.

[0041] Through the above-mentioned drawings, specific embodiments of the present disclosure have been shown, and there will be more detailed descriptions hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0042] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0043] As Figure 1 shown, the vehicle-mounted system 100 includes: a navigation subsystem 110, an environmental detection device group 120 for obtaining the environment where the vehicle is located during vehicle driving, a vehicle driving state detection device group 130, a data processing unit 140, a display control unit 150, and a display unit 160. The above-mentioned components or device groups are coupled together through a communication bus 12. In some examples, the communication bus 12 is used for connection communication between the above-mentioned components or device groups. It should be noted that Figure 1 only a part of the vehicle-mounted system 100 is shown, rather than all of the components of the vehicle-mounted system 100.

[0044] In Figure 1In it, the navigation subsystem 110 includes: a positioning device 111 and a map information storage device 112. Among them, the positioning device 111 can locate the position of the vehicle based on positioning systems such as the global positioning system (GPS), China's Beidou system, Russia's GLONASS system, Europe's Galileo system, Japan's Quasi-Zenith Satellite System (QZSS), India's Indian Regional Navigation Satellite System (IRNSS), etc., and obtain the position information of the vehicle. The map information storage device 112 stores map information, can obtain a navigation path to the destination according to the position information obtained from the positioning device 111, and display the position information and the navigation path in a map application program.

[0045] In Figure 1 it, the environmental detection device group 120 may include a vehicle-mounted communication device 121, a radar 122, a laser rangefinder 123, and a camera 124. These devices can obtain environmental data representing the surrounding environmental conditions of the vehicle.

[0046] The vehicle-mounted communication device 121 can communicate wirelessly with one or more devices directly or via a communication network. These devices that can communicate with the vehicle-mounted communication device 121 can be other vehicles, roadside machines or roadside platforms, or mobile terminal devices used by the vehicle's occupants. 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.

[0047] The radar 122 is used to sense objects in the surrounding environment of the vehicle, and can also be used to sense the speed and / or forward direction of these objects. In some examples, the radar 122 can use electromagnetic waves or lasers as the medium, and detect objects based on the time-of-flight (TOF) method or the phase-shift method, and detect the position of the detected object, the distance to the detected object, and the relative speed. In some examples, in order to be able to detect objects located in front of, behind, or on the side of the vehicle, the radar 122 can be configured at an appropriate position outside the vehicle.

[0048] The laser rangefinder 123 can use lasers to sense objects in the environment where the vehicle is located. In some embodiments, the laser rangefinder 123 can include one or more laser sources, a laser scanner, and one or more detectors, as well as other system components. The laser rangefinder 123 can measure the occlusions in the environment where the vehicle is located.

[0049] The camera 124 can be used to capture multiple images of the surrounding environment of the vehicle. The camera 124 can be a static camera or a video camera. In some examples, in order to obtain an external image of the vehicle, the camera 124 can be located at an appropriate position outside the vehicle. For example, in order to obtain an image in front of the vehicle, the camera 124 can be configured close to the front windshield inside the vehicle. Alternatively, the camera 124 can be configured around the front bumper or radiator grille. In some examples, in order to obtain an image behind the vehicle, the camera 124 can be configured close to the rear window glass inside the vehicle. Alternatively, the camera 124 can be configured around the rear bumper, trunk, or tailgate. In some examples, in order to obtain an image on the side of the vehicle, the camera 124 can be configured close to at least one of the side windows inside the vehicle. Alternatively, the camera 124 can be configured around the side mirror, fender, or door.

[0050] In Figure 1 the vehicle driving state detection device group 130 can include: a steering angle sensor 131 that detects the steering angle of the vehicle, a vehicle speed sensor 132 that detects the driving speed of the vehicle, and an acceleration sensor 133 that detects the acceleration applied to the vehicle. In some examples, as shown by the dashed box, it can also include an inertial sensor 134 that detects the position and orientation changes of the vehicle based on inertial acceleration, and the inertial sensor 134 can be a combination of the acceleration sensor 133 and a gyroscope in the specific implementation process.

[0051] In Figure 1In [the above context], the data processing unit 140 can be implemented as a computing system including a memory, a processor, an input / output interface, and a bus connecting these components. In some examples, the data processing unit 140 causes the processor to execute multiple commands through program instructions stored in the memory to process the data obtained from the navigation subsystem 110, the environmental detection device group 120, and the vehicle driving state detection device group 130. In some examples, the data processing unit 140 can also control the driving of the vehicle partially or entirely based on the processed data.

[0052] In Figure 1 [the above context], as shown by the dashed box, the data processing unit 140, the display control unit 150, and the display unit 160 can serve as the main body of a Head Up Display (HUD) device 170. The display control unit 150 can process the received data to obtain display information to be displayed after receiving the data processed by the data processing unit 140, or after receiving the data obtained from the navigation subsystem 110, the environmental detection device group 120, and the vehicle driving state detection device group 130, and project the display information onto the windshield of the vehicle through the display unit 160 for display.

[0053] The Head Up Display (HUD) device projects the light of the display image output by the image source onto an imaging window (such as an imaging plate, windshield, etc.) through, for example, a reflective optical design to display vehicle state information such as vehicle speed and fuel level, as well as indication information such as navigation and danger warnings at an appropriate position in front of the driver. This enables the driver to obtain relevant information such as vehicle speed and fuel level without deviating the line of sight from the road surface ahead, thereby improving the driving safety factor and driving experience.

[0054] Specifically, referring to Figure 2 and Figure 3 , the HUD device can be installed on a vehicle, which includes a windshield 204 located at the front of the vehicle. The driver and passengers inside the vehicle cabin 208 can see the front of the vehicle through the windshield 204.

[0055] In Figure 3 [the above context], the windshield 204 is visually located above the vehicle instrument panel 206. The driver can turn the steering wheel 210 inside the cabin 208 to steer the vehicle, such as changing lanes, merging, and parking the vehicle. In some embodiments, the steering wheel 210 can be retracted or omitted.

[0056] Referring to Figure 3 , the HUD device 170 (see Figure 4The display information 212 (e.g., virtual image) is projected onto a portion of the windshield 204 through one or more apertures (such as aperture 216) in the dashboard 206. Although Figure 4 an example size of the display information 212 is shown, the display information 212 can be presented over a larger or smaller area. Examples of the display information 212 include various vehicle information, such as the current vehicle speed, the current gear of the vehicle transmission, the engine speed, the direction of the vehicle, the current infotainment system settings, and / or other vehicle information. The head-up display device 170 provides information to the vehicle driver without the driver having to shift their line of sight away from the objects in front of the vehicle.

[0057] Refer to Figure 4 the exemplary implementation architecture of the head-up display device 170 shown. The display control unit 150 generates a signal 42 based on the data processed by the data processing unit 40, or the data 420 transmitted by the navigation subsystem 110, the environmental detection device group 20, and the vehicle driving state detection device group 30. The above communication control circuit is provided in the above data processing unit 40 and transmits the display information to the above display control unit 150.

[0058] Optionally, the display control unit 150 can obtain the driving information and environmental data of the vehicle from the in-vehicle computer. The current driving information can be obtained from the in-vehicle computer or a terminal connected to the in-vehicle computer. Then, based on the driving information, at least one of the navigation data and the environmental data is used as the target display data, and the target display data and the driving information are sent to the display unit together, and the display unit projects them onto the windshield for display.

[0059] The display unit 160 can include: a light source 161 and an optical path component 162. The light source 161 outputs light (such as a virtual image) based on the signal 42 from the display control unit 150 for display on the windshield 204. For example, the light source 161 can include one or more lasers and output red light, green light, and blue light.

[0060] The display unit 160 is configured to receive the target display data and the above driving information sent by the above display control unit and project them onto the windshield.

[0061] The optical path component 162 can reflect the output of the light source 161 to the windshield 204 through the hole 216. A viewer (e.g., a driver) can view the display information 212 in the display area where the display information 212 is projected onto the windshield 204. In some examples, the optical path component 162 can include one or more mirrors (plane mirrors) and concave mirrors (magnifying glasses). The output of the light source 161 is folded back via the mirror and magnified by the concave mirror and then reflected to the windshield 204 to form a virtual image 40 that can be visually observed by the driver. The visual effect presented by the virtual image 40 is that the virtual image 40 is projected onto a projection plane 41 at a set distance in front of the vehicle, but passes through the projection plane 41 and the real environment remains visible. In some examples, the optical path component 162 can also be omitted, and the light source 161 can directly project the display information 212 onto the windshield 204 to form the virtual image 40 on the projection plane 41.

[0062] In the display control method in the related art, during the driving of the vehicle, the display control unit 150 receives the ambient brightness information determined by the environmental 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 problems of response delay and uneven brightness adjustment, especially in the case of drastic light changes, such as when the vehicle suddenly enters or exits a tunnel, which may cause visual discomfort to 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.

[0063] Based on this, the present disclosure first provides a display control method. Figure 5 The flowchart of the display brightness adjustment method of the vehicle is shown, which can be applied to the above-mentioned display control unit 150. Among them, the above-mentioned display brightness adjustment method can include step S510 to step S520.

[0064] In step S510, when it is predicted that the vehicle is about to drive into a region with a sudden change in brightness, the brightness change information of the region with a sudden change in brightness is obtained.

[0065] Among them, the region with a sudden change in brightness includes a region where the brightness change is greater than the brightness change threshold within a preset distance.

[0066] In some examples, the display control unit 150 can monitor the road conditions in front of the vehicle through the above-mentioned environmental detection device group 120, such as lidar or camera, and analyze these data to predict potential regions with a sudden change in brightness. The region with a sudden change in brightness is defined as a region within a preset distance in front of the vehicle where the amplitude of the brightness change exceeds a preset brightness change threshold. This threshold is set according to actual driving conditions and safety requirements to identify those brightness changes that may have a significant impact on the driver's vision.

[0067] In some examples, the brightness change within a preset distance in the above-mentioned sudden brightness change area is greater than the brightness change threshold. Here, the preset distance can refer to a unit distance, such as 1 meter, 10 meters, etc., or other distances, such as 1.5 meters, 2 meters, etc. The specific setting of the brightness change threshold can be customized based on user requirements, such as 10 candela per square meter, 20 candela per square meter, etc., and no specific limitation is made in the implementation manner of this example. For example, an area where the brightness change value within 1 meter is greater than 10 candela per square meter can be used as the above-mentioned sudden brightness change area.

[0068] Optionally, the display control unit can determine the sudden brightness change area according to the data sent by the environmental detection device group 120. The data can include, but is not limited to, information such as light intensity, weather conditions, surrounding buildings or other natural obstructions, and the data can also be combined with the real-time position and moving direction of the vehicle to predict whether there will be a significant change in brightness in the area that the vehicle is about to enter.

[0069] Once it is predicted that the vehicle is about to drive into the sudden brightness change area, the display control unit can start collecting the brightness change information of the sudden brightness change area. The brightness change information can include the brightness information of each unit distance in the sudden brightness change area, as well as the brightness change law within the sudden brightness change area.

[0070] In step S520, according to the brightness change information, the display brightness of the vehicle is adjusted before the vehicle drives into the sudden brightness change area so that the display brightness changes monotonically, so that the display brightness of the vehicle when driving at the target position is adapted to the environmental brightness of the target position.

[0071] After obtaining the above-mentioned brightness change information, before the vehicle drives into the sudden brightness change area, a brightness adjustment plan can be formulated and the display brightness of the vehicle can be adjusted. Specifically, the brightness adjustment plan can make the display brightness of the vehicle change monotonically, that is, gradually increase or gradually decrease, and specifically can be determined according to the change of the environmental brightness as required.

[0072] The brightness adjustment plan can make the display brightness of the vehicle when driving to the target position adapt to the environmental brightness of the target position. The mapping relationship between the display brightness and the environmental brightness can be preset and stored in the memory. When adjusting, the corresponding display brightness can be found in the mapping relationship according to the above-mentioned environmental brightness. The mapping relationship includes multiple environmental brightnesses and the display brightnesses adapted to the environmental brightnesses.

[0073] Among them, the target position is the position where the environmental brightness in the sudden brightness change area differs the most from the environmental brightness before the sudden brightness change area.

[0074] It should be noted that the display brightness can be the display brightness of the HUD, or the display brightness of the display screen of the in-vehicle computer, or the display brightness of the display screen in the back seat of the vehicle, which is not specifically limited in the present exemplary embodiment.

[0075] The vehicle display brightness adjustment method provided by the embodiments of the present disclosure predicts the brightness sudden change area that the vehicle is about to enter and adjusts the vehicle's display brightness in advance, achieving a smoother and more environment-adaptive brightness transition. Thereby, while improving driving comfort, it ensures the driver's visual experience under various light conditions, reduces visual discomfort and driving risks caused by sudden brightness changes, and enhances driving safety.

[0076] In some exemplary embodiments of the present disclosure, the brightness change in the brightness sudden change area can be a monotonic change or a non-monotonic change. For example, referring to Figure 6 , when the brightness in the brightness sudden change area is a monotonic change, the brightness in the brightness sudden change area can be decreasing, referring to Figure 7 , the brightness in the brightness sudden change area can also be increasing. At this time, the above target position is the position farthest from the vehicle in the brightness sudden change area, that is, the end position of the brightness sudden change area. Referring to Figure 8 , when the brightness change in the above brightness sudden change area is a non-monotonic change, the brightness in the brightness sudden change area can be decreasing first and then increasing, referring to Figure 9 , the brightness in the brightness sudden change area can also be increasing first and then decreasing. At this time, the target position is the position corresponding to the brightness peak in the brightness sudden change area. The change in brightness can be linear or non-linear, and the specific change method is determined according to the shape of the occluder and the degree of light occlusion, which will not be elaborated here.

[0077] It should be noted that the generation of the brightness sudden change area can be caused by the occlusion of light by buildings or other occluders. For example, referring to Figure 10 , the occluder can be a tunnel, a high-rise building, a tree, etc., which is not specifically limited in this example. The light can be natural light or artificial light, such as lighting, firelight, etc., which will not be elaborated here.

[0078] In some examples, when the vehicle travels to the first position, the display brightness of the above vehicle is adjusted, where the first position is located between the current position of the vehicle and the brightness sudden change area. For example, continuing to refer to Figure 10, the first position is located between the shadow of the high-rise building and the vehicle. Among them, the ambient brightness within the preset range of the first position is equal within the threshold range. The preset range can be 10 meters, 20 meters, etc., which will not be elaborated in this exemplary embodiment. Among them, the threshold range is an acceptable error range. The threshold range can be the percentage difference between the two, such as 5%, 6%, etc., or it can be a specific brightness value, such as 2 candela per square meter, 3 candela per square meter, etc. For example, when the difference in ambient brightness within the preset range of the first position is within 5%, it can be determined that the ambient brightness within the preset range of the first position is equal. Or, 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.

[0079] Optionally, the determination of the first position can be determined according to the vehicle speed and the distance between the vehicle and the brightness abrupt change area. When determining the first position, the ambient brightness of the target position can also be combined. The specific determination method will not be elaborated here.

[0080] In some examples, when determining the above-mentioned brightness abrupt change area, the navigation information can be combined to determine the obstacle at the first preset distance from the vehicle in the vehicle driving route, and the influence of the obstacle on the environment can be determined according to the current time and the current weather information to determine the brightness abrupt change area. For example, when the above-mentioned building is a tunnel, the size of the brightness abrupt change area is related to the relative position of the sun and the tunnel entrance and the size of the tunnel entrance and exit.

[0081] Refer to Figure 11 , assuming that the vehicle is driving in different tunnels, the exit of Tunnel 1 is larger than the exit of Tunnel 2, then the brightness change at the tunnel exit can be referred to Figure 12 to obtain that the length of the brightness abrupt change area caused by Tunnel 1 is greater than the length of the brightness abrupt change area of Tunnel 2.

[0082] That is to say, when the above-mentioned obstacle is a tunnel, the above-mentioned brightness abrupt change area can be determined based on the current time, the current weather information and the size of the tunnel entrance and exit.

[0083] Optionally, when obtaining the above-mentioned brightness abrupt change area, the predicted ambient brightness within the 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 will not be elaborated in this exemplary embodiment.

[0084] After completing the acquisition of the brightness abrupt change area, the display brightness of the vehicle can be adjusted before the vehicle enters the brightness abrupt change 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.

[0085] Optionally, refer to Figure 13 As shown, when the above-mentioned occlusion is a tunnel, the distance between the above-mentioned first position and the tunnel entrance is positively correlated with the size of the entrance and exit of the above-mentioned tunnel. For example, the corresponding correlation curve can be referred to Figure 13 .

[0086] For example, when the vehicle performs brightness adjustment, refer to Figure 14 . In the related art, the adjustment method is to start adjusting the display brightness of the vehicle when entering a region with a sudden change in brightness. The adjustment curve is like S1. The present disclosure starts adjusting before the vehicle enters the region with a sudden change in brightness, and the adjustment curve is like S2. Comparing S1 and S2 can obtain the adjustment method of the display brightness of the present disclosure, which can make the adjustment smoother.

[0087] When adjusting, the maximum brightness difference in the region with a sudden change in brightness can be determined first, and then the display brightness of the vehicle can be adjusted before the vehicle enters the region with a sudden change in brightness according to the above-mentioned maximum brightness difference, so that the display brightness changes monotonically.

[0088] Specifically, the first distance between the vehicle and the region with a sudden change in brightness and the second distance between the vehicle and the above-mentioned target position can be determined first, and then the display brightness of the vehicle can be adjusted according to the above-mentioned first distance, second distance, and maximum brightness difference.

[0089] For example, refer to Figure 15 . Based on the driving speed, the first distance d1, and the second distance d2, the first time when the vehicle enters the region with a sudden change in brightness and the second time when the vehicle travels to the target position P can be determined, and then based on the above-mentioned first time and second time, the adjustment start moment and the unit adjustment brightness can be determined, where the unit adjustment brightness is the value of the display brightness adjusted per unit time.

[0090] The determination of the start moment 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 the 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 above-mentioned difference and the advance coefficient, and then the start moment can be determined according to the above-mentioned first time and the advance time. After determining the start moment, the adjustment time can be determined based on the above-mentioned second time and the start moment, and then the unit adjustment brightness can be determined based on the adjustment time and the maximum brightness difference.

[0091] Optionally, during the linear adjustment in the above brightness adjustment process, the unit adjustment brightness can be obtained by dividing the maximum brightness difference by the above adjustment time. When the above brightness adjustment process is non-linear adjustment, a brightness adjustment curve can be fitted based on the display brightness at the above target position, the display brightness at the start of adjustment, the maximum brightness difference, and the above brightness adjustment time to obtain the unit adjustment brightness corresponding to each moment, so that the display control unit adjusts the display brightness of the vehicle according to the above unit adjustment brightness.

[0092] In some examples, when the brightness change in the above brightness sudden change area is non-monotonic, the above brightness sudden change area can be divided into a first sub-area and a second sub-area. Among them, the first sub-area and the second sub-area are continuous, and the brightness change trends of the first sub-area and the second sub-area are opposite. The above target position is at the junction of the first sub-area and the second sub-area.

[0093] The above method for adjusting the display brightness 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 when the vehicle travels to the second position adapts to the ambient brightness of the second position. Among them, the second position is on the side of the brightness sudden change area away from the vehicle, and the ambient brightness within the preset range of the second position is equal within the threshold range. The specific values of the preset range and the threshold range can refer to the description of the first position and will not be elaborated here. It can also be customized according to user needs and will not be elaborated in this example implementation manner.

[0094] In some examples, referring to Figure 16 the vehicle starts to adjust the display brightness at the first position A, completes the brightness adjustment of the first stage at the target position P for the first time, then starts to adjust 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 as Figure 17 shown, where S3 represents the process of adjusting the display brightness in the prior art, and S4 represents the process of adjusting the display brightness of the present disclosure. Comparing S3 and S4, it can be seen that the adjustment process of the method for adjusting the display brightness of the vehicle in the present disclosure is smoother.

[0095] Optionally, taking the adjustment of the display brightness of the HUD as an example, referring to Figure 18 when the occlusion range is larger, the display brightness is lower, and the adjustment of the display brightness will be adjusted before occlusion, which can make the adjustment of the actual brightness smoother.

[0096] The display brightness adjustment method for vehicles provided by the embodiments of the present disclosure can predict the area with a sudden change in brightness that the vehicle is about to enter and adjust the display brightness of the vehicle in advance, achieving a smoother and more environment-adaptive brightness transition. Thus, while improving driving comfort, it ensures the driver's visual experience under various lighting conditions, reduces visual discomfort and driving risks caused by sudden brightness changes, and enhances driving safety.

[0097] Taking the adjustment of the HUD display brightness as an example, when entering a tunnel, referring to Figure 19 and Figure 20 , Figure 19 are the display brightness adjustment curves in the related art, Figure 20 is the adjustment curve of the display brightness of the present disclosure. By comparing Figure 19 and Figure 20 , it can be obtained that the present disclosure has started brightness adjustment before entering the tunnel. After entering the tunnel, the brightness has been adjusted to the display brightness suitable for the tunnel. Moreover, the smoothness of the brightness adjustment in the present disclosure is higher, and the change rate during the adjustment process is slow. It can ensure the driver's visual experience under various lighting conditions while improving driving comfort, reduce visual discomfort and driving risks caused by sudden brightness changes, and enhance driving safety.

[0098] When driving out of the tunnel, referring to Figure 21 and Figure 22 , Figure 21 are the display brightness adjustment curves in the related art, Figure 22 is the adjustment curve of the display brightness of the present disclosure. By comparing Figure 21 and Figure 22 , it can be obtained that the present disclosure has started brightness adjustment before driving out of the tunnel. After driving out of the tunnel, the brightness has been adjusted to the display brightness suitable for outside the tunnel. Moreover, the smoothness of the brightness adjustment in the present disclosure is higher, and the change rate during the adjustment process is slow. It can ensure the driver's visual experience under various lighting conditions while improving driving comfort, reduce visual discomfort and driving risks caused by sudden brightness changes, and enhance driving safety.

[0099] Furthermore, the present disclosure also provides a display brightness adjustment device for a vehicle. As shown in Figure 23 , the display brightness adjustment device 2300 of the vehicle may include an acquisition module 2310 and an adjustment module 2320. Among them:

[0100] The acquisition module 2310 can be used to obtain the brightness change information of the sudden brightness change area when it is predicted that the vehicle is about to drive into the sudden brightness change area. Among them, the sudden brightness change area includes an area where the brightness change is greater than the brightness change threshold within a preset distance.

[0101] The adjustment module 2320 can be used to adjust the display brightness of the vehicle before the vehicle enters the area with a sudden change in brightness according to the brightness change information, so that the display brightness changes monotonically, so that the display brightness when the vehicle is driving at the target position adapts to the ambient brightness of the target position; wherein, the target position is the position in the area with a sudden change in brightness where the ambient brightness differs the most from the ambient brightness before the area with a sudden change in brightness.

[0102] The acquisition module 2310 can be used to determine the degree of change in ambient brightness caused by the obstacle according to the current time and the current weather information, so as to predict the brightness change information of the area with a sudden change in brightness.

[0103] In some examples, the adjustment module 2320 can also be used to adjust the display brightness of the vehicle when the vehicle travels to the first position, wherein the first position is located between the current position of the vehicle and the area with a sudden change in brightness, and the ambient brightness within the preset range of the first position is equal within the threshold range.

[0104] In some examples, the adjustment module 2320 can also be used to obtain the maximum brightness difference in the area with a sudden change in brightness; adjust the display brightness of the vehicle before the vehicle enters the area with a sudden change in brightness according to the maximum brightness difference so that the display brightness changes monotonically.

[0105] In some examples, the adjustment module 2320 can also be used to predict the first distance between the vehicle and the area with a sudden change in brightness, and the second distance between the vehicle and the target position; adjust the display brightness of the vehicle before the vehicle enters the area with a sudden change in brightness according to the first distance, the second distance and the maximum brightness difference.

[0106] In some examples, the adjustment module 2320 can also be used to obtain the driving speed of the vehicle, and determine the adjustment start time and the unit adjustment brightness based on the driving speed, the first distance and the second distance; adjust the display brightness of the vehicle according to the adjustment start time and the unit adjustment brightness value.

[0107] In some examples, the area with a sudden change in brightness includes a continuous first sub-region and a second sub-region, and the brightness change trends of the first sub-region and the second sub-region are opposite; the target position is located between the first sub-region and the second sub-region; the display brightness adjustment device 2300 of the vehicle can also be used 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 when the vehicle travels to the second position adapts to the ambient brightness of the second position; the second position is located on the side of the area with a sudden change in brightness far from the vehicle, and the ambient brightness within the preset range of the second position is equal within the threshold range.

[0108] In some examples, the display brightness adjustment device 2300 of the vehicle can also be used to determine the area with a sudden change in brightness according to the navigation information and the current weather information.

[0109] In some examples, the display brightness adjustment device 2300 of the vehicle can also be used to determine an obstacle within a first preset distance from the vehicle on the vehicle driving route according to navigation information; determine the degree of change of the environmental brightness caused by the obstacle according to the current time and the current weather information to determine a brightness sudden change area.

[0110] In some examples, the display brightness adjustment device 2300 of the vehicle can also be used to obtain the predicted environmental brightness within a second preset distance from the vehicle on the vehicle driving route; determine the brightness sudden change area according to the predicted environmental brightness.

[0111] It should be understood that the above device embodiments are only illustrative, and the devices of the present disclosure can also be implemented in other ways. For example, the division of units / modules in the above embodiments is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0112] In addition, without special instructions, in each embodiment of the present disclosure, each functional unit / module can be integrated in one unit / module, or each unit / module can exist physically alone, or two or more units / modules can be integrated together. The above integrated unit / module can be implemented in the form of hardware or in the form of a software program module.

[0113] When 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. Without special instructions, the processor can be any suitable hardware processor, such as a CPU, GPU, FPGA, DSP, and ASIC, etc. Without special instructions, the storage unit can be any suitable magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory RRAM (Resistive Random Access Memory), a dynamic random access memory DRAM (Dynamic Random Access Memory), a static random access memory SRAM (Static Random-Access Memory), an enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), a high-bandwidth memory HBM (High-Bandwidth Memory), a hybrid memory cube HMC (Hybrid Memory Cube), etc.

[0114] When an integrated unit / module is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present disclosure, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This 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 execute all or part of the steps of the methods of the various embodiments of the present disclosure. The aforementioned memory includes: various media such as USB flash drives, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), external hard drives, magnetic disks, or optical discs that can store program codes.

[0115] Please refer to Figure 24 , which shows a block diagram of the structure of an electronic device provided by an exemplary embodiment of the present disclosure. In some examples, the electronic device can be at least one of devices such as a smart phone, a smart watch, a desktop computer, a laptop computer, a virtual reality terminal, an augmented reality terminal, a wireless terminal, and a laptop portable computer. The electronic device has a communication function and can access a wired network or a wireless network. The electronic device can generally refer to one of multiple terminals. Those skilled in the art can know that the number of the above terminals can be more or less. It can be understood that the electronic device undertakes the computing and processing work of the technical solution of the present disclosure, and the embodiments of the present disclosure do not limit this.

[0116] As Figure 24 shown, the electronic device 2400 may include: at least one processor 2410, a memory 2420, and a communication interface 2430.

[0117] The memory 2420 is used to store programs. Specifically, the program may include program codes, and the program codes include computer operation instructions.

[0118] The memory 2420 may contain a high-speed RAM memory and may also include non-volatile memory, such as at least one disk memory.

[0119] The processor 2410 is configured to execute computer-executable instructions stored in the memory 2420 to implement the method for adjusting the display brightness of a vehicle described in the foregoing method embodiments. Among them, the processor 2410 may be a central processing unit (CPU for short), or an application specific integrated circuit (ASIC for short), or one or more integrated circuits configured to implement the embodiments of the present disclosure.

[0120] The electronic device 2400 may further include a communication interface 2430, through which the electronic device 2400 can communicate with external devices. In a specific implementation, if the communication interface 2430, the memory 2420, and the processor 2410 are implemented independently, the communication interface 2430, the memory 2420, and the processor 2410 may be connected to each other through a bus and communicate with each other. The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may 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.

[0121] Optionally, in a specific implementation, if the communication interface 2430, the memory 2420, and the processor 2410 are integrated on a single chip, the communication interface 2430, the memory 2420, and the processor 2410 may communicate through an internal interface.

[0122] The present disclosure also provides a computer-readable storage medium, which may include various media capable of storing program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disc. Specifically, the computer-readable storage medium stores program instructions for the method for adjusting the display brightness of a vehicle in the foregoing embodiments.

[0123] The embodiments of the present disclosure also provide 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 to implement the method for adjusting the display brightness of a vehicle in the foregoing embodiments.

[0124] Those skilled in the art should be able to realize that in one or more of the above examples, the functions described in the embodiments of the present disclosure can be implemented by hardware, software, firmware, or any combination thereof. When implemented using software, these 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 computer storage media and communication media, where the communication media includes any medium that facilitates the transfer of a computer program from one place to another. The storage media can be any available medium accessible by a general-purpose or special-purpose computer.

[0125] In the above embodiments, the descriptions of the various embodiments have their own emphases. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0126] After considering the specification and practicing the invention claimed herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not claimed in the present disclosure.

[0127] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A method for adjusting the display brightness of a vehicle, characterized in that, Including: Determine an obstruction within a first preset distance from the vehicle on the vehicle's driving route according to navigation information; Determine the degree of change in environmental brightness caused by the obstruction according to the current time and current weather information to determine a region of sudden brightness change; When it is predicted that the vehicle is about to enter the region of sudden brightness change, obtain the brightness change information of the region of sudden brightness change, where the region of sudden brightness change includes a region where the brightness change within a preset distance is greater than a brightness change threshold; Adjust the display brightness of the vehicle before the vehicle enters the region of sudden brightness change according to the brightness change information so that the display brightness changes monotonically, so that the display brightness of the vehicle when driving at the target position adapts to the environmental brightness of the target position; Wherein, the target position is the position where the environmental brightness in the region of sudden brightness change differs most from the environmental brightness before the region of sudden brightness change; Wherein, the obtaining the brightness change information of the region of sudden brightness change includes: Determine the degree of change in environmental brightness caused by the obstruction according to the current time and the current weather information to predict the brightness change information of the region of sudden brightness change.

2. The method according to claim 1, wherein Adjusting the display brightness of the vehicle before the vehicle enters the region of sudden brightness change according to the brightness change information includes: When the vehicle travels to a first position, adjust the display brightness of the vehicle, where the first position is between the current position of the vehicle and the region of sudden brightness change, and the environmental brightness within a preset range of the first position is equal within a threshold range.

3. The method according to claim 1, wherein The region of sudden brightness change includes a continuous first sub-region and a second sub-region, and the brightness change trends of the first sub-region and the second sub-region are opposite; The target position is located at the junction of the first sub-region and the second sub-region; The method further includes: When the vehicle travels to the target position, adjust the display brightness so that the display brightness changes monotonically, so that the display brightness of the vehicle when driving to a second position adapts to the environmental brightness of the second position; The second position is on the side of the region of sudden brightness change away from the vehicle, and the environmental brightness within a preset range of the second position is equal within a threshold range.

4. The method according to claim 1, characterized in that The method further includes: Obtain the predicted environmental brightness within a second preset distance from the vehicle on the vehicle's driving route; Determine the region of sudden brightness change according to the predicted environmental brightness.

5. The method according to claim 1, wherein Adjusting the display brightness of the vehicle before the vehicle enters the region of sudden brightness change according to the brightness change information so that the display brightness changes monotonically includes: Obtain the maximum brightness difference of the region of sudden brightness change; Adjust the display brightness of the vehicle before the vehicle enters the region of sudden brightness change according to the maximum brightness difference so that the display brightness changes monotonically.

6. The method according to claim 5, wherein Adjusting the display brightness of the vehicle before the vehicle enters the region of sudden brightness change according to the maximum brightness difference includes: Predict a first distance between the vehicle and the region of sudden brightness change, and a second distance between the vehicle and the target position; Adjust the display brightness of the vehicle before the vehicle enters the sudden brightness change area according to the first distance, the second distance, and the maximum brightness difference.

7. The method according to claim 6, characterized in that, Adjusting the display brightness of the vehicle before the vehicle enters the sudden brightness change area according to the first distance, the second distance, and the maximum brightness difference includes: Obtain the driving speed of the vehicle, and determine the adjustment start time and the unit adjustment brightness value based on the driving speed, the first distance, and the second distance; Adjust the display brightness of the vehicle according to the adjustment start time and the unit adjustment brightness value.

8. A display brightness adjustment device for a vehicle, characterized in that, It includes: An acquisition module, configured to determine an obstacle within a first preset distance from the vehicle in the vehicle driving route according to navigation information; Determine the degree of change in the environmental brightness caused by the obstacle according to the current time and the current weather information to determine the sudden brightness change area; When it is predicted that the vehicle is about to enter the sudden brightness change area, obtain the brightness change information of the sudden brightness change area, where the sudden brightness change area includes an area where the brightness change within a preset distance is greater than the brightness change threshold; An adjustment module, configured to adjust the display brightness of the vehicle before the vehicle enters the sudden brightness change area according to the brightness change information so that the display brightness changes monotonically, so that the display brightness of the vehicle when driving at the target position is adapted to the environmental brightness of the target position; Wherein, the target position is the position where the environmental brightness in the sudden brightness change area differs the most from the environmental brightness before the sudden brightness change area; Wherein, obtaining the brightness change information of the sudden brightness change area includes: Determine the degree of change in the environmental brightness caused by the obstacle according to the current time and the current weather information to predict the brightness change information of the sudden brightness change area.

9. An electronic device, characterized in that, The electronic device includes: a processor and a memory; the processor is configured to execute instructions stored in the memory to implement the method for adjusting the display brightness of the vehicle according to any one of claims 1 to 7.

10. A computer storage medium, characterized in that, The storage medium stores at least one instruction, and the at least one instruction is used to be executed by a processor to implement the method for adjusting the display brightness of the vehicle according to any one of claims 1 to 7.

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