Head-up display device, display control method and device, storage medium and vehicle

Abstract

The invention provides a head-up display device, a display control method and device, a storage medium and a vehicle. The display control method comprises the steps that a track line image is filled with movable fragmented image elements, and the moving direction of the image elements is kept consistent with the extending direction of the track line image; acquiring front road condition information of the vehicle; and controlling the moving speed of the movable fragmented image elements according to the front road condition information.

Description

Technical Field

[0001] The present disclosure relates to the field of assisted driving technology, and particularly to a head-up display device, a display control method, a device, a storage medium, and a vehicle. Background Art

[0002] A head-up display (HUD) device projects the light of a display image output by an image source onto an imaging window (such as an imaging plate, a windshield, etc.) through, for example, a reflective optical design, so as to display vehicle status information such as vehicle speed, fuel level, etc., as well as indication information such as navigation, danger warning, etc. at an appropriate position in front of the driver. Thereby, the driver can obtain relevant information such as vehicle speed, fuel level, etc. without deviating the line of sight from the road surface ahead, and thus the driving safety factor and driving experience can be improved. Summary of the Invention

[0003] The present disclosure provides a head-up display device, a display control method, a device, a storage medium, and a vehicle. By more intuitively and accurately displaying the road conditions ahead, the driver controls the driving speed of the vehicle according to the perceived road conditions ahead, reducing the thinking burden of the driver and improving the safety in complex driving environments.

[0004] The technical solution of the present disclosure is implemented as follows:

[0005] In a first aspect, the present disclosure provides a display control method, the method including:

[0006] Filling movable fragmented image elements in a track line image, wherein a moving direction of the image elements is consistent with an extending direction of the track line image;

[0007] Obtaining information on the road conditions ahead of the vehicle;

[0008] Controlling a moving speed of the movable fragmented image elements according to the information on the road conditions ahead.

[0009] In a second aspect, the present disclosure provides a display control device, the device including: a filling part, an obtaining part, and a control part; wherein,

[0010] The filling part is configured to fill movable fragmented image elements in a track line image, wherein a moving direction of the image elements is consistent with an extending direction of the track line image;

[0011] The obtaining part is configured to obtain information on the road conditions ahead of the vehicle;

[0012] The control part is configured to control a moving speed of the movable fragmented image elements according to the information on the road conditions ahead.

[0013] In a third aspect, the present disclosure provides a display control device, the device comprising: a processor and a memory; the processor is configured to execute instructions stored in the memory to implement the display control method as described in the first aspect.

[0014] In a fourth aspect, the present disclosure provides a computer-readable storage medium storing at least one instruction, the at least one instruction being configured to be executed by a processor to implement the display control method as described in the first aspect.

[0015] In a fifth aspect, the present disclosure provides a head-up display device, the head-up display device comprising a display control unit and a display unit; wherein,

[0016] the display control unit is configured to fill a movable fragmented image element in the track line image, and the moving direction of the image element is consistent with the extending direction of the track line image;

[0017] and, obtain the information of the road conditions in front of the vehicle;

[0018] and, control the moving speed of the movable fragmented image element according to the information of the road conditions in front of the vehicle;

[0019] the display unit is configured to project the track line image and the image element onto the windshield of the vehicle for display based on the control of the display control unit.

[0020] In a sixth aspect, the present disclosure provides a vehicle, the vehicle comprising the head-up display device as described in the fifth aspect.

[0021] The present disclosure provides a head-up display device, a display control method, a device, a storage medium, and a vehicle. A movable fragmented image element is filled into the track line image, and the moving speed of the image element is controlled according to the information of the road conditions in front of the vehicle, so that the driver controls the driving speed of the vehicle according to the perceived moving speed of the image element. The thinking burden of the driver is reduced, and the safety in a complex driving environment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the composition of a vehicle-mounted system provided by the present disclosure.

[0023] Figure 2 It is an exemplary top view of the vehicle provided by the present disclosure.

[0024] Figure 3 It is an exemplary perspective view from the driver's seat of the vehicle provided by the present disclosure.

[0025] Figure 4 Schematic diagram of the architecture of the head-up display device provided by the present disclosure.

[0026] Figure 5 Schematic diagram of a flight path image provided by the present disclosure.

[0027] Figure 6(A) is a schematic diagram of another flight path image provided by the present disclosure.

[0028] Figure 6(B) is a schematic diagram of yet another flight path image provided by the present disclosure.

[0029] Figure 6(C) is a schematic diagram of still another flight path image provided by the present disclosure.

[0030] Figure 6(D) is a schematic diagram of another flight path image provided by the present disclosure.

[0031] Figure 7 Schematic diagram of the process of a display control method provided by the present disclosure.

[0032] Figure 8 Schematic diagram of an image element provided by the present disclosure.

[0033] Figure 9 Schematic diagram of another image element provided by the present disclosure.

[0034] Figure 10 Schematic diagram of the process of controlling the moving speed of an image element provided by the present disclosure.

[0035] Figure 11(A) is a schematic diagram of the moving speed of an image element at the first congestion state level.

[0036] Figure 11(B) is a schematic diagram of the moving speed of an image element at the second congestion state level.

[0037] Figure 11(C) is a schematic diagram of the moving speed of an image element at the third congestion state level.

[0038] Figure 12 Schematic diagram of another process of controlling the moving speed of an image element provided by the present disclosure.

[0039] Figure 13 Schematic diagram of the movement of an image element at the reference moving speed.

[0040] Figure 14 Schematic diagram of the moving speed of an image element when the current driving speed of the vehicle is greater than the speed limit value.

[0041] Figure 15 Schematic diagram of the moving speed of an image element when the current driving speed of the vehicle is less than the speed limit value.

[0042] Figure 16Another flowchart for controlling the movement speed of image elements provided by the present disclosure.

[0043] Figure 17 Schematic diagram showing a relatively large distance between the vehicle of the present disclosure and other vehicles.

[0044] Figure 18 Schematic diagram of the movement speed of image elements when the distance between the vehicle of the present disclosure and other vehicles is relatively large.

[0045] Figure 19 Schematic diagram showing a relatively short distance between the vehicle of the present disclosure and other vehicles.

[0046] Figure 20 Schematic diagram of the movement speed of image elements when the distance between the vehicle of the present disclosure and other vehicles is relatively short.

[0047] Figure 21 Schematic diagram showing that the vehicle of the present disclosure is too close to other vehicles.

[0048] Figure 22 Schematic diagram of the track line image in the shape of a leading arrow provided by the present disclosure.

[0049] Figure 23 Flowchart for controlling the track line branches in the track line image provided by the present disclosure.

[0050] Figure 24 Schematic diagram of a vehicle coordinate system provided by the present disclosure.

[0051] Figure 25 Schematic diagram of dividing regions in the XOY plane of the vehicle coordinate system provided by the present disclosure.

[0052] Figure 26(A) is a schematic diagram of a track line branch provided by the present disclosure.

[0053] Figure 26(B) is a display schematic diagram of a track line branch provided by the present disclosure.

[0054] Figure 27(A) is another schematic diagram of a track line branch provided by the present disclosure.

[0055] Figure 27(B) is another display schematic diagram of a track line branch provided by the present disclosure.

[0056] Figure 28(A) is yet another schematic diagram of a track line branch provided by the present disclosure.

[0057] Figure 28(B) is yet another display schematic diagram of a track line branch provided by the present disclosure.

[0058] Figure 29 Display schematic diagram for maintaining a complete track line branch provided by the present disclosure.

[0059] Figure 30 Schematic diagram of forming a dual focal plane provided by the present disclosure.

[0060] Figure 31 Schematic diagram of the composition of a display control device provided by the present disclosure.

[0061] Figure 32 Schematic diagram of the structure of a display control device provided by the present disclosure. Detailed implementation manners

[0062] Next, the technical solutions in the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the present disclosure.

[0063] Refer to Figure 1 , which shows an example of an in-vehicle system 100 applicable to the technical solution of the present disclosure. In some examples, the vehicle equipped with the system 100 can be an internal combustion engine vehicle powered by an engine, a hybrid vehicle powered by an engine and an electric motor, an electric vehicle powered by an electric motor, and other types of vehicles. In the following content of this specification, the vehicle equipped with the in-vehicle system 100 is referred to as the present vehicle.

[0064] As Figure 1 shown, the in-vehicle 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 in-vehicle system 100 is shown, rather than all of the components of the in-vehicle system 100.

[0065] In Figure 1 , 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 present vehicle based on positioning systems such as the global positioning system (GPS), Beidou system in China, GLONASS system in Russia, Galileo system in Europe, Quasi-Zenith Satellite System (QZSS) in Japan, and Indian Regional Navigation Satellite System (IRNSS) in India, and obtain the position information of the present 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.

[0066] In Figure 1

[0067] 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 acquire environmental information indicating the surrounding environmental conditions of the vehicle.

[0067]

[0068] The vehicle-mounted communication device 121 can wirelessly communicate with one or more devices directly or via a communication network. These devices capable of communicating with the vehicle-mounted communication device 121 can be other vehicles, roadside units or roadside platforms, or mobile terminal devices used by the vehicle occupants in the vehicle. In some examples, the vehicle-mounted communication device 121 can use 3G cellular communication, such as code division multiple access (CDMA), EVDO, 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 directly communicate 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.

[0068]

[0069] The radar 122 is used to sense objects within 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 a 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 to the side of the vehicle, the radar 122 can be configured at an appropriate position outside the vehicle.

[0069]

[0070] 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.

[0070] The camera 124 can be used to capture multiple images of the surrounding environment of the vehicle. The camera 122 can be a static camera or a video camera. In some examples, in order to obtain an external image of the vehicle, the camera 122 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 122 can be arranged close to the front windshield inside the vehicle. Alternatively, the camera 122 can be arranged around the front bumper or radiator grille. In some examples, in order to obtain an image behind the vehicle, the camera 122 can be arranged close to the rear window glass inside the vehicle. Alternatively, the camera 122 can be arranged around the rear bumper, trunk or tailgate. In some examples, in order to obtain an image on the side of the vehicle, the camera 122 can be arranged close to at least one of the side windows inside the vehicle. Alternatively, the camera 122 can be arranged around the side mirror, fender or door.

[0071] In Figure 1 , the vehicle driving state detection device group 130 can include: a steering angle sensor 131 for detecting the steering angle of the vehicle, a vehicle speed sensor 132 for detecting the driving speed of the vehicle, and an acceleration sensor 133 for detecting the acceleration applied to the vehicle. In some examples, as shown by the dashed box, it can also include an inertial sensor 134 for detecting the position and orientation changes of the vehicle based on inertial acceleration. The inertial sensor 134 can be a combination of the acceleration sensor 133 and a gyroscope in the specific implementation process.

[0072] In Figure 1 , the data processing unit 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 unit 140 causes the processor to execute multiple commands through program instructions stored in the memory to implement the processing of the data obtained by the navigation subsystem 110, the environment 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 based on some or all of the processed data.

[0073] In Figure 1 , as shown by the dashed box, the display control unit 150 and the display unit 160 can be the main body of a Head Up Display (HUD) device 170. The display control unit 150 can, after receiving the data processed by the data processing unit 140, or after receiving the data obtained by the navigation subsystem 110, the environment detection device group 120, and the vehicle driving state detection device group 130, process the received data to obtain display information that needs to be displayed, and project the display information onto the windshield of the vehicle through the display unit 160 for display.

[0074] Combined with Figure 2An exemplary top view of the present vehicle as shown, and Figure 3 An exemplary perspective view from the driver's seat of the present vehicle, the present vehicle including a windshield 204 located at the front of the vehicle. The driver and passengers in the passenger compartment 208 of the present vehicle can see the front of the present vehicle through the windshield 204.

[0075] In Figure 3 , the windshield 204 is visually located above the vehicle instrument panel 206. The driver can turn the steering wheel 210 in the passenger compartment 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.

[0076] The head-up display device 170 (see Figure 4 ) projects display information 212 (e.g., a virtual image) onto a portion of the windshield 204 through one or more holes (such as hole 216) in the instrument panel 206. Although Figure 3 shows an example size of the display information 212, 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 object in front of the vehicle.

[0077] See Figure 4 An exemplary implementation architecture of the head-up display device 170 as shown. The display control unit 150 generates a signal 412 based on the data processed by the data processing unit 140, or the data 420 transmitted by the navigation subsystem 110, the environmental detection device group 120, and the vehicle driving state detection device group 130. The display unit 160 can include: a light source 161 and an optical path component 162. The light source 161 outputs light (e.g., a virtual image) based on the signal 412 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, green, and blue light.

[0078] 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 project the display information 212 directly onto the windshield 204 to form a virtual image 40 on the projection plane 41.

[0079] Combined with the foregoing Figures 1 to 4 As shown, during the driving of the vehicle, the display control unit 150 determines the direction information of the driving trajectory of the vehicle according to the position information of the vehicle provided by the navigation subsystem 110 and the navigation path, and projects the direction information of the driving trajectory onto the windshield 204 in the form of a track line through the display unit 160. According to the guidance of the projected track line image, the driver can drive the vehicle along the guided road to the destination. Specifically, as Figure 5 shown, in the display area 5 of the windshield 204, the track line image 51 is shown as being covered on the driving road. Since the track line image 51 is a virtual image formed by the display unit 160, Figure 5 its reference numeral is indicated by a dashed line in the figure. The lane lines 52 of the driving road are the scenery of the real environment, so Figure 5 its reference numeral is indicated by a solid line in the figure. In Figure 5 the figure, the track line image 51 is shown as a line extending from in front of the vehicle in the driving direction, and the extending direction of the line corresponds to the direction of the driving trajectory of the vehicle. If the current driving trajectory is in a straight-ahead direction, then Figure 5The track line image 51 shown in [the figure] will correspondingly appear to extend in a straight line direction from the front of the vehicle. In some examples, as the direction of the driving trajectory changes, the extension direction of the track line image 51 will also change correspondingly with the direction of the driving trajectory. For example, as shown in Fig. 6(A), when the driving trajectory needs to turn right, that is, when the driving road between the lane lines 52 bends to the right, the track line image 51 will also correspondingly appear to bend and extend to the right from the front of the vehicle to correspond to the direction of the driving trajectory. As shown in Fig. 6(B), when the driving trajectory needs to turn left, the track line image 51 will also correspondingly appear to bend and extend to the left from the front of the vehicle to correspond to the direction of the driving trajectory. As shown in Figs. 6(C) and 6(D) respectively, when the driving trajectory needs to change lanes to the left and right, the track line image 51 will also correspondingly appear to extend in the directions of changing lanes to the left and right from the front of the vehicle to correspond to the direction of the driving trajectory. In addition, when the driving trajectory needs to make a U-turn, the track line image 51 will also correspondingly appear to extend in the opposite direction of the current driving direction from the front of the vehicle to correspond to the direction of the driving trajectory.

[0080] From Figure 5 and Fig. 6, it can be seen that the track line image 51 can visually show the driver the direction of the driving trajectory, enabling the driver to see relevant information without having to look down, improving safety and convenience, and is a visual aid tool used to assist the driver in better understanding the position of the vehicle and the expected driving path during driving.

[0081] Although the track line image 51 shown in the above Figure 5 and Fig. 6 can visually show the direction of the driving trajectory, however, the driver needs more information about the road conditions ahead to understand the navigation path. Generally, the head-up display device 170 usually displays some road conditions ahead in the form of numbers and color changes. For example, when there is a speed limit sign ahead of the navigation path, usually the speed limit specified by the speed limit sign will be displayed in the display area 5 by a red circle with the speed limit value inside the frame. Another example is that when there is congestion ahead, the degree of congestion will be indicated in sequence by yellow, light red, and dark red at the position or section of the navigation path where the congestion occurs. The above display methods require the driver to match the displayed content with various possible road conditions ahead to know the actual road conditions that the displayed content matches. In the case of an increasingly complex road surface environment, performing such a match will increase the driver's thinking burden, thereby reducing driving safety.

[0082] Based on the above description, the present disclosure hopes to provide a more intuitive and accurate display solution for the road conditions ahead. As Figure 7As shown, an example of a display control method provided by the present disclosure is shown, which can be executed by the aforementioned head-up display device 170, and in particular, can be executed by the display control unit 150 in the aforementioned head-up display device 170. Figure 7 The method shown includes steps S701 to S703.

[0083] In step S701, movable fragmented image elements are filled in the track line image, and the moving direction of the fragmented image elements is consistent with the extending direction of the track line image.

[0084] It should be noted that in Figure 5 In the track line image 51 shown in FIG6 , although the track line image 51 can intuitively display the direction of the current driving track, within the scope of the track line image 51, it is usually filled in the form of a "surface" for display, and such a display method cannot provide more intuitive road condition information during driving.

[0085] In the present disclosure, the display control unit 150 fills the fragmented and movable image elements into the track line image in a rendering manner. Specifically, the shape of the image element may include a circle, a rectangle, a triangle, etc. Taking a circle as an example, combined with Figure 5 The example of the track line image 51 extending in the straight direction shown in FIG. Figure 8 As shown, all image elements 80 are neatly filled in the track line image 51 in the form of a grid or a dot matrix. Figure 9 As shown, all image elements 80 are randomly filled in the track line image 51 . Figure 8 and Figure 9 The image elements in the image can move in the extending direction of the track line image 51 indicated by the solid arrow. It should be noted that, in addition to the example of the track line image 51 extending in the straight direction, the track line image corresponding to the direction of the driving track is a left turn, a right turn, a left lane change, a right lane change, and a U-turn can also be as shown in the example. Figure 8 and Figure 9 The image element 80 is filled in a manner, and the moving direction of the image element 80 is consistent with the extension direction of the track line image corresponding to the direction of the driving track.

[0086] In some examples, such as Figure 8 and Figure 9 As shown, a reference moving speed V0 can be set for the image element, where V0 represents the moving speed of the image element in the default state. For example, in some examples, when the vehicle is traveling and there is no situation affecting the vehicle's driving speed ahead of the navigation path, the image element 80 can move at the reference moving speed V0.

[0087] In the present disclosure, after filling fragmented and movable image elements into the track line image, by controlling the moving speed of the image elements, an information dimension that can be visually displayed is added to the track line image.

[0088] In step S702, information on the road conditions ahead of the vehicle is obtained.

[0089] In the present disclosure, the display control unit 150 controls the moving speed of the movable image elements displayed by the display unit 160 within the track line image. Based on the human perception system, in order to effortlessly associate the moving speed of the image elements with the information in the real driving environment on the premise of evolutionary biology. In some examples, the information on the road conditions ahead can be information that appears ahead of the driving trajectory of the vehicle based on the current position of the vehicle and can have a positive or negative impact on the driving speed of the vehicle.

[0090] In some examples, when there is congestion ahead of the driving trajectory of the vehicle (including the visible and invisible fronts), the driving speed of the vehicle needs to be reduced. When there is no congestion ahead of the driving trajectory of the vehicle and other information that affects the driving speed does not have a negative impact on the driving speed, then there is no need to reduce the driving speed of the vehicle, and even the driving speed of the vehicle can be increased within the speed limit set by some regulations.

[0091] In some examples, when there is a speed limit sign ahead of the driving trajectory of the vehicle (including the visible and invisible fronts), if the current driving speed is greater than the speed limit value indicated by the speed limit sign, the driving speed of the vehicle needs to be reduced. If the current driving speed is less than the speed limit value indicated by the speed limit sign and other information that affects the driving speed does not have a negative impact on the driving speed, then there is no need to reduce the driving speed of the vehicle, and even the driving speed of the vehicle can be increased within the range of the speed limit value.

[0092] In some examples, when there are other vehicles in the visible front of the vehicle, the driving speed of the vehicle also needs to be reduced. When there are no other vehicles in the visible front of the vehicle and other information that affects the driving speed does not have a negative impact on the driving speed, there is also no need to reduce the driving speed of the vehicle, and even the driving speed of the vehicle can be increased within the range of the speed limit value.

[0093] Examples of the above three types of information on the road conditions ahead can not only affect the driving speed of the vehicle, but also these exemplary types of information can be distinguished based on some set reference values or reference situations, so as to divide each type of information into more than one level. It should be noted that although the present disclosure only provides examples of three types of information on the road conditions ahead, it does not exclude other types of information that can have a positive or negative impact on the driving speed of the vehicle and can be distinguished based on some set reference values or reference situations to divide different levels. The present disclosure will not elaborate on this here.

[0094] In some examples, the information on the road conditions existing ahead that is not visible to the vehicle refers to the information on the road conditions at a relatively long distance ahead of the vehicle that cannot be observed visually, and this information can be obtained through the navigation subsystem 110 or the vehicle-mounted communication device 121. The information on the road conditions existing ahead that is visible refers to the information on the road conditions that can be observed visually at a relatively short distance ahead of the vehicle. For example, the road signs and other vehicles ahead observed by the driver within the field of view of the windshield 204. In addition to being obtained through the navigation subsystem 110 or the vehicle-mounted communication device 121, this information can also be obtained by using the radar 122, the laser rangefinder 123, and the camera 124 in the environmental detection device group 120.

[0095] In step S703, control the moving speed of the movable fragmented image elements according to the information on the road conditions ahead.

[0096] In the present disclosure, according to the examples shown in step S702, the information on the road conditions ahead can be distinguished based on some set reference values or reference situations to divide the level of the information. In some examples, the display control unit 150 controls the moving speed of the fragmented image elements moving along the moving direction in the track line image according to the divided information level, and projects it on the windshield 204 through the display unit 160. By observing the change in the moving speed of the fragmented image elements, the driver can intuitively perceive the road conditions ahead and control the change in the driving speed of the vehicle based on the change in the moving speed of the image elements.

[0097] In some examples, even if there is a situation ahead on the navigation path that affects the driving speed of the vehicle, but when the road conditions ahead do not require the driver to decelerate, the image elements can still move at the reference moving speed V0.

[0098] For Figure 7In the technical solution shown, movable fragmented image elements are filled into the track line image, and the moving speed of the image elements is controlled according to the information on the road conditions ahead, so that the driver controls the driving speed of the vehicle based on the perceived moving speed of the image elements. This reduces the driver's thinking burden and improves safety in complex driving environments.

[0099] For Figure 7 In some implementation manners of the technical solution shown, the information on the road conditions ahead includes the information on the road congestion state within a set distance in front of the vehicle. In some examples, after the positioning device 111 of the navigation subsystem 110 obtains the position information of the vehicle, the position information is sent to the server providing the map application through the vehicle-mounted communication device 121 to obtain the number of other vehicles existing within the set distance in front of the vehicle from the server. The information on the road congestion state can be characterized by the number of other vehicles existing within the set distance in front of the vehicle, and can be divided into two or more congestion state levels according to these numbers, and different congestion state levels respectively represent congestion states with different congestion degrees.

[0100] Corresponding to the information on the road congestion state, referring to Figure 10 , the controlling the moving rate of the movable fragmented image elements according to the information on the road conditions ahead includes steps S1001 to S1003.

[0101] In step S1001, the congestion state level is determined according to the information on the road congestion state within the set distance in front of the vehicle.

[0102] In step S1002, when the congestion state level within the set distance in front of the vehicle is the first congestion state level, the moving rate of the movable fragmented image elements is controlled to be the first moving rate.

[0103] In step S1003, when the congestion state level within the set distance in front of the vehicle is the second congestion state level which is more congested than the congestion degree corresponding to the first congestion state level, the moving rate of the movable fragmented image elements is controlled to be the second moving rate; wherein, the second moving rate is less than the first moving rate.

[0104] In some examples, since the road congestion status information can be characterized by the number of other vehicles within a set distance in front of the vehicle, in the present disclosure, the road congestion status corresponding to no other vehicles within 1 kilometer in front of the vehicle can be set as the first congestion status level, that is, the congestion status is smooth. The road congestion status corresponding to 1 to 5 other vehicles within 1 kilometer in front of the vehicle can be set as the second congestion status level, that is, the congestion status is slow. In addition, the road congestion status corresponding to more than 5 other vehicles within 1 kilometer in front of the vehicle can be set as the third congestion status level, that is, the congestion status is congested. From the number of vehicles in front corresponding to the above three congestion status levels, it can be seen that the congestion degree corresponding to the third congestion status level is more congested than that corresponding to the second congestion status level, and the congestion degree corresponding to the second congestion status level is more congested than that corresponding to the first congestion status level.

[0105] In some examples, the road congestion status information can also be determined by the road condition information ahead in the navigation path obtained by the navigation subsystem 110. Specifically, in the navigation path, the road condition information ahead can also include at least four congestion status levels, namely smooth, slow, congested, and severely congested. In some examples, these four congestion status levels are represented by different colors in the navigation path. For example, when the road condition ahead is smooth, the color of the road section ahead in the navigation path is green. When the road condition ahead is slow, the color of the road section ahead in the navigation path is yellow. When the road condition ahead is congested, the color of the road section ahead in the navigation path is light red. When the road condition ahead is severely congested, the color of the road section ahead in the navigation path is dark red. In some examples, when the road condition ahead is congested or severely congested, it can be considered as the same type of road condition information, that is, there are more vehicles in the road section ahead in the navigation path and the congestion degree is relatively serious.

[0106] Combined with the above different degrees of congestion, it is necessary to timely remind the driver to control the vehicle speed. That is to say, the more congested the front is, the more the driver needs to slow down to ensure safety. In the present disclosure, corresponding to the foregoing example, referring to FIGS. 11(A), (B), and (C), which show the moving speeds of image elements when the road congestion states within a set distance in front of the vehicle are at the first congestion state level, the second congestion state level, and the third congestion state level, respectively. In FIGS. 11(A), (B), and (C), the congestion degree corresponding to each congestion state level within 1 kilometer in front of the vehicle is represented by the depth of the line segment color within the dashed box 1100. The darker the color, the more serious the congestion degree; the lighter the color, the less serious the congestion degree. It can be understood that the dashed box 1100 is used for an exemplary representation of the congestion state level in the solution. In the specific implementation process, this dashed box may not be displayed in area 5. When the front congestion state is at the third congestion state level, the display control unit 150 controls the moving speed V3 of the movable fragmented image element 80 to be less than the moving speed V2 of the image element 80 corresponding to the second congestion state level. When the front congestion state is at the second congestion state level, the display control unit 150 controls the moving speed V2 of the movable fragmented image element 80 to be less than the moving speed V1 of the image element 80 corresponding to the first congestion state level. It should be noted that the more serious the congestion degree (i.e., the more congested the front is), the lower the moving speed of the image element 80. After the driver perceives the decrease in the moving speed, the driver will reduce the driving speed of the vehicle based on this perception, thereby improving driving safety.

[0107] In some examples, when the front congestion state is at the first congestion state level, that is, when the road ahead is unobstructed, it means that the driver does not need to reduce the driving speed of the vehicle, and the display control unit 150 can also control the movement of the image element 80 at the foregoing reference moving speed V0.

[0108] For Figure 7 the technical solution shown, in some implementation manners, the information about the road conditions ahead of the vehicle includes information that there is a speed limit required ahead of the vehicle. For example, after obtaining the position information of the vehicle's current location by using the positioning device 111 of the navigation subsystem 110, the speed limit sign at a set distance ahead of this position on the navigation path can be obtained through the map information stored in the map information storage device 112, and the upper speed limit value indicated by the speed limit sign can be obtained. The above information indicates that a speed limit needs to be imposed at the set distance ahead according to the upper speed limit value.

[0109] Corresponding to the information that there is a speed limit required ahead of the vehicle, referring to Figure 12 the controlling the moving speed of the movable fragmented image element according to the information about the road conditions ahead includes steps S1201 to S1203.

[0110] In step S1201, compare the current driving speed of the vehicle with the upper speed limit value indicated by the speed limit information.

[0111] In step S1202, when the current driving speed of the vehicle is less than or equal to the upper speed limit value, control the moving rate of the movable fragmented image elements to be the third moving rate;

[0112] In step S1203, when the current driving speed of the vehicle is greater than the upper speed limit value, control the moving rate of the movable fragmented image elements to be the fourth moving rate; wherein, the fourth moving rate is less than the third moving rate and less than the reference moving rate.

[0113] In some examples, as Figure 13 shown, when the vehicle is driving normally at a speed of 100 km / h shown by the dashed box 1300, the display control unit 150 controls the image elements 80 in the track line image 51 to move at a reference moving rate V0. When it is found that there is a speed limit sign 1 km ahead of the current position of the vehicle on the navigation path, as Figure 14 shown by the dashed box 1400 therein, and the upper speed limit value indicated by the sign is 85 km / h, it means that the current driving speed of the vehicle is greater than the upper speed limit value and the driver needs to decelerate. At this time, the display control unit 150 controls the image elements 80 in the track line image 51 to move at the moving rate V5, V5 is less than V0, and after the driver perceives that the moving rate of the image elements 80 decreases, the driver will reduce the driving speed of the vehicle so that no speeding phenomenon will occur.

[0114] In some examples, as Figure 15 shown, when the driver drives the vehicle normally at a speed of 75 km / h and finds that there is a speed limit sign 1 km ahead of the current position of the vehicle on the navigation path, as Figure 15 shown by the dashed box 1500 therein, and the upper speed limit value indicated by the sign is 85 km / h, it means that the current driving speed of the vehicle does not exceed the upper speed limit value and the driver does not need to decelerate. At this time, the display control unit 150 can control the image elements 80 in the track line image 51 to continue to move at the reference moving rate V0, or move at the moving rate V4, V4 is greater than V5 and V4 is less than V0.

[0115] It can be understood that Figures 13 to 15 the dashed boxes 1300, 1400 and 1500 in are used to exemplarily represent the driving speed and speed limit signs in the solution, and in the specific implementation process, these dashed boxes may not be displayed in area 5.

[0116] For Figure 7In the technical solution shown, in some implementations, the road condition information ahead includes the presence of other vehicles in the visible area ahead of the vehicle and the distance between the vehicle and the other vehicles. For example, when one or more components of the radar 122, the laser rangefinder 123, and the camera 124 sense that there are other vehicles ahead of the visible area of ​​the vehicle, in order to reduce the risk of driving, it is necessary to reduce the driving speed of the vehicle. In addition, the closer the distance between the vehicle and the other vehicle, the more the driving speed needs to be reduced.

[0117] In response to the presence of other vehicles in the visible area ahead of the vehicle and the distance between the vehicle and the other vehicles, refer to Figure 16 The method of controlling the moving rate of the movable fragmented image elements according to the road condition information ahead includes steps S1601 to S1603.

[0118] In step S1601, the distance between the host vehicle and other vehicles in the visible area in front of the host vehicle is compared with a first distance threshold.

[0119] In step S1602, when the distance between the host vehicle and other vehicles in the visible area in front of the host vehicle is greater than or equal to a first distance threshold, the moving speed of the movable fragmented image elements is controlled to be a fifth moving speed.

[0120] In step S1603, when the distance between the vehicle and other vehicles in the visible area in front of the vehicle is less than the first distance threshold, the moving speed of the movable fragmented image element is controlled to be a sixth moving speed, wherein the fifth moving speed is greater than the sixth moving speed and less than the reference moving speed.

[0121] In some examples, combined Figures 17 to 20 , taking the example that there is another vehicle 1702 on the right side of the visible area in front of the vehicle 1701 as shown by the arrow, the driver can observe the other vehicle 1702 through the windshield 204. At this time, one or more of the radar 122, the laser rangefinder 123 and the camera 124 in the vehicle can sense the vehicle 1702 and obtain the distance D between the vehicle 1701 and the vehicle 1702. When the other vehicle 1702 is sensed, the display control unit 150 can control the image element 80 in the track line image 51 to move at a moving speed less than the reference moving speed V0, and the moving speed can be related to the distance D between the vehicle 1701 and the other vehicle 1702. In the specific implementation process, a first distance threshold value, such as 80 meters, can be set to distinguish the distance between the vehicle 1701 and the other vehicle 1702, such as Figure 17When D is greater than the first distance threshold, it means that the distance between the vehicle 1701 and the other vehicle 1702 is far, and the display control unit 150 can Figure 18 As shown, the image element 80 in the track line image 51 is controlled to move at a moving speed V6 less than V0. Figure 19 As shown, when D is less than the first distance threshold, it means that the distance between the vehicle 1701 and the other vehicle 1702 is relatively close, and the display control unit 150 can Figure 20 As shown, the image element 80 in the track line image 51 is controlled to move at a moving speed V7 which is smaller than V6.

[0122] As the distance D between the vehicle 1701 and the other vehicle 1702 gradually decreases, the vehicle 1701 gradually approaches the other vehicle 1702. Figure 21 As shown, when D is less than another set second distance threshold, such as 20 meters, it can be considered that the vehicle 1701 is too close to the other vehicle 1702. In order to be able to show the driver more intuitively, in some examples, the method also includes:

[0123] When the distance between the vehicle and other vehicles in the visible area in front of the vehicle is less than a second distance threshold, the shape of the track line image is modified to a navigation arrow shape, and the moving speed of the image element in the navigation arrow is controlled to be the minimum moving speed.

[0124] In the above example, the second distance threshold is less than the first distance threshold. When D is less than the second distance threshold, see Figure 22 , the display control unit 150 controls the shape of the track line image 51 to change to a navigation arrow shape, and the direction of the navigation arrow still corresponds to the direction of the driving track. In addition, the display control unit 150 controls the moving speed of the image element filled in the navigation arrow to be the minimum moving speed Vmin, that is, the moving speed of the image element filled in the navigation arrow is less than the moving speed mentioned in any of the aforementioned examples or implementations of the present disclosure.

[0125] based on Figure 16 In the implementation shown, in order to use the track line image to mark other vehicles 1702 in front of the vehicle 1701 to remind the driver to pay attention, and avoid using marking symbols separately for marking, in some examples, the method provided by the present disclosure also includes:

[0126] When the track line image extends to the rear of other vehicles in the visible area in front of the own vehicle, the track line image portion starting from the rear of the other vehicle is branched to form two track line branches.

[0127] It should be noted that, in the driver's field of vision, the track line image usually extends forward a certain distance. If other vehicles are beyond this distance, the track line image cannot extend to the tail of other vehicles, and there is no need to perform branching processing. The present disclosure sets the maximum distance that the track line image extends forward as the third distance threshold. In addition, when other vehicles are in front of the vehicle but will not affect the normal driving of the vehicle, there is no need to mark them to remind the driver of the vehicle. For example, when other vehicles are in other lanes, they will not affect the normal driving of the vehicle. For another example, during straight driving, when the projections of other vehicles in the driving direction do not overlap with the projections of the vehicle in the driving direction, it will not affect the normal driving of the vehicle. Based on this, the present disclosure provides an exemplary implementation of the above-mentioned fork processing, such as Figure 23 As shown, this implementation includes steps S2301 to S2304.

[0128] In step S2301, when the distance between the host vehicle and other vehicles is greater than the second distance threshold and less than the third distance threshold, the distance between the central axis of the host vehicle and the central axis of other vehicles is obtained.

[0129] In step S2302, when the distance between the central axis of the own vehicle and the central axis of other vehicles is less than a fourth distance threshold, the numbers of image elements filled in the two track line branches are controlled to be approximately the same.

[0130] In step S2303, when the distance between the central axis of the vehicle and the central axis of other vehicles is greater than the fourth distance threshold and less than the fifth distance threshold, the number of image elements filled in the first trajectory branch of the two trajectory branches is controlled to be greater than the number of image elements filled in the second trajectory branch; wherein the first trajectory branch is a trajectory branch close to the vehicle, and the second trajectory branch is a trajectory branch away from the vehicle.

[0131] In step S2304, when the distance between the central axis of the vehicle and the central axis of other vehicles is greater than the fifth distance threshold, the track line image is kept as a whole without being divided.

[0132] For the above examples and their implementation, see Figure 24 , a vehicle coordinate system is established based on the vehicle. The coordinate system adopts a right-hand coordinate system. In this coordinate system, the positive direction of the X axis is the direction in which the front of the vehicle is facing, the positive direction of the Y axis is the direction along the width of the vehicle pointing to the left side of the vehicle, and the positive direction of the Z axis is the height direction of the vehicle. Based on the above three coordinate axes, three planes are formed with the projection of the center of the front of the vehicle on the ground as the origin, among which plane XOY is the ground, plane YOZ is a plane parallel to the front of the vehicle, and plane XOZ is a plane along the center of the front and rear of the vehicle and perpendicular to the ground.

[0133] Take the XOY plane as an example, see Figure 25 , set the upper limit of the road width to L, the center axis O1 of the vehicle 1701 is on the X axis, and the center axis O2 of the other vehicle 1702, when the distance between the vehicle 1701 and the other vehicle 1702 is greater than the second distance threshold (for example, 20m) and less than the third distance threshold (for example, 80m), as Figure 25 The dashed box range 2501 in the figure can be used to determine whether other vehicles 1702 affect the normal driving of the vehicle 1701 by using the distance D1 between O1 and O2. Figure 25 As shown, the fourth distance threshold is one sixth of the width W1 of the vehicle 1701, and the fifth distance threshold is one half of the width W1 of the vehicle 1701. Based on this setting, the above range 2501 can be divided into five areas according to the distance D1 between O1 and O2, among which the interval 1 corresponding to the dot-filled area A1 is The interval 2 corresponding to the area A2 filled with cross lines is The interval 3 corresponding to the area A3 filled with oblique lines is The interval 4 corresponding to the light gray filled area A4 is The interval 5 corresponding to the dark gray filled area A5 is

[0134] Combination Figure 25 , when the distance D1 between O2 and O1 is less than , O2 is in area A1, and vehicle 1702 is approximately in front of vehicle 1701. In this case, as shown in FIG. 26(A) and FIG. 26(B), the display control unit 150 controls the track line image 52 to extend to vehicle 1702 and then perform branching processing to form two track line branches. The display control unit 150 controls the number of image elements filled in the two track line branches to be approximately the same, and the driver can perceive that vehicle 1702 is approximately in front of vehicle 1701 by observing the number of image elements in each branch.

[0135] When the distance D1 between O2 and O1 is greater than and less than When the temperature is low, O2 may be in area A2 or A3.

[0136] In some implementations, when O2 is in A2, from the driver's perspective, vehicle 1702 is on the right side of the vehicle 1701 and closer to the vehicle. In this case, as shown in FIG27(A), the display control unit 150 controls the track line image 52 to extend to the vehicle 1702 and then perform branching processing to form two track line branches. The display control unit 150 controls the number of image elements filled in the track line branch close to the vehicle (i.e., the track line branch on the left side of the vehicle 1702's driving direction) of the two track line branches to be greater than the number of image elements filled in the track line branch away from the vehicle (i.e., the track line branch on the right side of the vehicle 1702's driving direction). In some examples, as shown in FIG27(B), the ratio of the number of image elements filled in the track line branch close to the vehicle to the number of image elements filled in the track line branch away from the vehicle is 3:1.

[0137] In some implementations, when O2 is in A3, from the driver's perspective, vehicle 1702 is on the left side of the vehicle 1701 and closer to the vehicle. In this case, as shown in FIG28(A), the display control unit 150 controls the track line image 52 to extend to the vehicle 1702 and then perform branching processing to form two track line branches. The display control unit 150 controls the number of image elements filled in the track line branch close to the vehicle (i.e., the track line branch on the right side of the vehicle 1702's driving direction) of the two track line branches to be greater than the number of image elements filled in the track line branch away from the vehicle (i.e., the track line branch on the left side of the vehicle 1702's driving direction). In some examples, as shown in FIG28(B), the ratio of the number of image elements filled in the track line branch close to the vehicle to the number of image elements filled in the track line branch away from the vehicle is 3:1.

[0138] When the distance D1 between O2 and O1 is greater than When O2 is in A4, from the driver's perspective, vehicle 1702 is on the right side of vehicle 1701 and farther away from vehicle 1701. When O2 is in A5, from the driver's perspective, vehicle 1702 is on the left side of vehicle 1701 and farther away from vehicle 1701. In this case, Figure 29 As shown, since the vehicle 1702 is relatively far away from the vehicle 1701 and will not affect the driving of the vehicle 1701, the display control unit 150 still keeps the track line image 52 intact without being divided into branches.

[0139] In order to improve the AR display effect of the track line image filled with image elements disclosed in the above technical solution. Figure 30 The optical path component 162 in the display unit 160 shown in the present disclosure can output the light source 161 in the form of two optical paths (such as Figure 30The light paths L-1 and L-2 in the image are reflected onto the windshield 204, and two projection planes 41-A and 41-B are formed in front of the vehicle, wherein the distance between the projection plane 41-A and the driver's viewpoint is 5m to 7m, which is called the near focal plane. The distance between the projection plane 41-B and the driver's viewpoint is 12m to 17m, which is called the far focal plane. The display control unit 150 can also control the display unit 160 to display the formed virtual image 40 on the near focal plane and / or the far focal plane, so that the track line image filled with image elements provided in the aforementioned technical solution of the present disclosure produces an AR display effect.

[0140] In some examples, when other vehicles are too close to the vehicle, the track line image shape is modified to a pilot arrow shape, and the moving speed of the image elements in the pilot arrow is controlled to be the lowest moving speed. In order to enhance the driver's perception, the track line image in the shape of a pilot arrow and the image elements in the pilot arrow can be displayed through the near focal plane, that is, the projection surface 41-A. In addition, the various forms of track line images displayed in the aforementioned technical solutions can be displayed through the far focal plane, that is, the projection surface 41-B.

[0141] Based on the same inventive concept as the above technical solution, see Figure 31 , which shows a display control device 310 provided by the present disclosure, the device 310 may be Figure 1 , Figure 4 or Figure 30 The display control unit shown in the figure, the device 310 includes: a filling part 3101, an acquisition part 3102 and a control part 3103; wherein,

[0142] The filling part 3101 is configured to fill the track line image with movable fragmented image elements, and the moving direction of the image elements is consistent with the extending direction of the track line image;

[0143] The acquisition part 3102 is configured to acquire the road condition information ahead of the vehicle;

[0144] The control part 3103 is configured to control the moving speed of the movable fragmented image elements according to the front road condition information.

[0145] In some examples, the front road condition information includes road congestion status information within a set distance ahead of the vehicle; accordingly, the control part 3103 is configured to:

[0146] Determining a congestion level according to the road congestion information within a set distance ahead of the vehicle;

[0147] When the congestion state level is a first congestion state level, controlling the moving speed of the movable fragmented image element to be a first moving speed;

[0148] When the congestion state level is a second congestion state level that is more congested than the first congestion state level, the moving speed of the movable fragmented image element is controlled to be a second moving speed; wherein the second moving speed is less than the first moving speed.

[0149] In some examples, the control portion 3103′ is further configured to:

[0150] When the road ahead is clear, the moving speed of the movable fragmented image elements is controlled to be the reference moving speed.

[0151] In some examples, the control portion 3103′ is further configured to:

[0152] A track line image filled with image elements having a moving rate of the first moving rate, the second moving rate or the reference moving rate is displayed through the far focus plane.

[0153] In some examples, the road condition information ahead includes information that a speed limit is required ahead of the vehicle; accordingly, the control part 3103 is configured to:

[0154] Compare the current speed of the vehicle with the upper speed limit indicated by the information requiring speed limit;

[0155] When the current driving speed of the host vehicle is less than or equal to the speed upper limit value, controlling the moving speed of the movable fragmented image element to be a third moving speed;

[0156] When the current driving speed of the vehicle is greater than the speed upper limit value, the moving speed of the movable fragmented image element is controlled to be a fourth moving speed; wherein the fourth moving speed is less than the third moving speed and less than the benchmark moving speed.

[0157] In some examples, the control portion 3103 is further configured to:

[0158] The track line image filled with image elements whose moving speed is the third moving speed or the fourth moving speed is displayed through the far focus plane.

[0159] In some examples, the road condition information ahead includes the presence of other vehicles in the visible area ahead of the vehicle and the distance between the vehicle and the other vehicles; accordingly, the control part 3103 is configured to:

[0160] Comparing the distance between the host vehicle and other vehicles in the visible area in front of the host vehicle with a first distance threshold;

[0161] When the distance between the host vehicle and the other vehicle is greater than or equal to a first distance threshold, controlling the moving speed of the movable fragmented image element to be a fifth moving speed;

[0162] When the distance between the host vehicle and the other vehicle is less than a first distance threshold, the moving speed of the movable fragmented image element is controlled to be a sixth moving speed, wherein the fifth moving speed is greater than the sixth moving speed and less than a reference moving speed.

[0163] In some examples, the control portion 3103′ is further configured to:

[0164] The track line image filled with image elements moving at the fifth moving rate or the sixth moving rate is displayed through the far focus plane.

[0165] In some examples, the control portion 3103′ is further configured to:

[0166] When the distance between the host vehicle and the other vehicles is less than a second distance threshold, the shape of the track line image is modified to a navigation arrow shape, and the moving speed of the image element in the navigation arrow is controlled to be the minimum moving speed.

[0167] In some examples, the control portion 3103′ is further configured to:

[0168] The track line graphic in the shape of the navigation arrow and the image elements within the navigation arrow are displayed through the near focus plane.

[0169] In some examples, the control portion 3103′ is further configured to:

[0170] When the track line image extends to the rear of another vehicle in the visible area in front of the own vehicle, the track line image portion starting from the rear of the other vehicle is branched to form two track line branches.

[0171] In some examples, the control portion 3103′ is further configured to:

[0172] When the distance between the host vehicle and the other vehicle is greater than a second distance threshold and less than a third distance threshold, obtaining a distance between a central axis of the host vehicle and a central axis of the other vehicle;

[0173] When the distance between the central axis of the host vehicle and the central axis of the other vehicle is less than a fourth distance threshold, controlling the numbers of image elements filled in the two track line branches to be approximately the same;

[0174] When the distance between the central axis of the host vehicle and the central axis of the other vehicle is greater than a fourth distance threshold and less than a fifth distance threshold, the number of image elements filled in a first track branch of the two track branches is controlled to be greater than the number of image elements filled in a second track branch; wherein the first track branch is a track branch close to the host vehicle, and the second track branch is a track branch away from the host vehicle;

[0175] When the distance between the central axis of the host vehicle and the central axis of the other vehicle is greater than the fifth distance threshold, the track line image is kept as a whole without being divided.

[0176] In some examples, the control portion 3103 is further configured to:

[0177] A track line image with two track line branches and the image elements filled in the track line image with two track line branches are displayed through a far focal plane.

[0178] refer to Figure 32 , which shows a structural block diagram of a display control device 310 provided by an exemplary embodiment of the present disclosure. In some examples, the display control device 310 has a communication function and can access a wired network or a wireless network. In some examples, the display control device 310 can receive data based on the wired network or wireless network accessed. It can be understood that the display control device 310 undertakes the calculation and processing work of the technical solution of the present disclosure, and the present disclosure does not limit this.

[0179] like Figure 32 As shown, the display control device 310 in the present disclosure may include one or more of the following components: a processor 3210 and a memory 3220 .

[0180] Optionally, the processor 3210 uses various interfaces and lines to connect various parts within the entire computing device, and executes various functions of the computing device and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 3220, and calling data stored in the memory 3220. Optionally, the processor 3210 can be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 3210 can integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), a neural network processor (NPU), and a baseband chip. Among them, the CPU mainly processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing the content that needs to be displayed on the touch display; the NPU is used to implement artificial intelligence (AI) functions; and the baseband chip is used to process wireless communications. It is understandable that the above-mentioned baseband chip may not be integrated into the processor 3210, but may be implemented by a separate chip.

[0181] The memory 3220 may include a random access memory (RAM) or a read-only memory (ROM). Optionally, the memory 3220 includes a non-transitory computer-readable storage medium. The memory 3220 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 3220 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above various method embodiments, etc.; the data storage area may store data created according to the use of the display control device 310, etc.

[0182] In addition, those skilled in the art can understand that the structure of the display control device 310 shown in the above-mentioned figures does not constitute a limitation on the display control device 310, and the display control device 310 may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. For example, the display control device 310 also includes a display screen, a camera assembly, a microphone, a speaker, a radio frequency circuit, an input unit, a sensor (such as an acceleration sensor, an angular velocity sensor, a light sensor, etc.), an audio circuit, a WiFi module, a power supply, a Bluetooth module and other components, which will not be described in detail here.

[0183] The present disclosure also provides a computer-readable storage medium storing at least one instruction, wherein the at least one instruction is used to be executed by a processor to implement the display control method described in the above embodiments.

[0184] The present disclosure also provides a computer program product, which includes computer instructions stored in a computer-readable storage medium; a processor of a computing device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computing device executes to implement the display control method described in the above-mentioned embodiments.

[0185] Those skilled in the art should be aware that in one or more of the above examples, the functions described in the present disclosure can be implemented using 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. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. Storage media can be any available media that can be accessed by a general or special-purpose computer.

[0186] It should be noted that the technical solutions described in the present disclosure can be combined arbitrarily without conflict.

[0187] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A display control method, characterized in that, the method includes: Filling movable fragmented image elements within a track line image, and the moving direction of the image elements is consistent with the extending direction of the track line image; Obtaining information on the road conditions ahead of the vehicle; Controlling the moving speed of the movable fragmented image elements according to the information on the road conditions ahead.

2. The method according to claim 1, characterized in that, the information on the road conditions ahead includes information on the road congestion status within a set distance ahead of the vehicle; correspondingly, the controlling the moving speed of the movable fragmented image elements according to the information on the road conditions ahead includes: Determining the congestion status level according to the information on the road congestion status within a set distance ahead of the vehicle; When the congestion status level is the first congestion status level, controlling the moving speed of the movable fragmented image elements to be the first moving speed; When the congestion status level is the second congestion status level which is more congested than the congestion degree corresponding to the first congestion status level, controlling the moving speed of the movable fragmented image elements to be the second moving speed; wherein, the second moving speed is less than the first moving speed.

3. The method according to claim 2, characterized in that, the method further includes: When the road ahead is clear, controlling the moving speed of the movable fragmented image elements to be the reference moving speed.

4. The method according to claim 3, characterized in that, the method further includes: Displaying the track line image filled with image elements having a moving speed of the first moving speed, the second moving speed or the reference moving speed through a telecentric display.

5. The method according to claim 1, characterized in that, the information on the road conditions ahead includes information that there is a speed limit required ahead of the vehicle; correspondingly, the controlling the moving speed of the movable fragmented image elements according to the information on the road conditions ahead includes: Comparing the current driving speed of the vehicle with the upper speed limit value indicated by the information on the required speed limit; When the current driving speed of the vehicle is less than or equal to the upper speed limit value, controlling the moving speed of the movable fragmented image elements to be the third moving speed; When the current driving speed of the vehicle is greater than the upper speed limit value, controlling the moving speed of the movable fragmented image elements to be the fourth moving speed; wherein, the fourth moving speed is less than the third moving speed and less than the reference moving speed.

6. The method according to claim 5, characterized in that, the method further includes: Displaying the track line image filled with image elements having a moving speed of the third moving speed or the fourth moving speed through a telecentric display.

7. The method according to claim 1, characterized in that, the information on the road conditions ahead includes the presence of other vehicles within the visible area ahead of the vehicle and the distance between the vehicle and the other vehicles; correspondingly, the controlling the moving speed of the movable fragmented image elements according to the information on the road conditions ahead includes: Compare the distance between the vehicle and other vehicles existing in the visible area in front of the vehicle with a first distance threshold; When the distance between the vehicle and the other vehicle is greater than or equal to the first distance threshold, control the moving speed of the movable fragmented image elements to be a fifth moving speed; When the distance between the vehicle and the other vehicle is less than the first distance threshold, control the moving speed of the movable fragmented image elements to be a sixth moving speed; wherein, the fifth moving speed is greater than the sixth moving speed and less than the reference moving speed.

8. The method according to claim 7, wherein, the method further includes: Display a track line image filled with image elements having a fifth moving speed or a sixth moving speed through a telecentric plane.

9. The method according to claim 7, wherein, the method further includes: When the distance between the vehicle and the other vehicle is less than a second distance threshold, modify the shape of the track line image to a leading arrow shape, and control the moving speed of the image elements within the leading arrow to be the lowest moving speed; the second distance threshold is less than the first distance threshold.

10. The method according to claim 9, wherein, the method further includes: Display the track line graphic in the shape of a leading arrow and the image elements within the leading arrow through a close focus plane.

11. The method according to claim 1 or 7, wherein, the method further includes: When the track line image extends to the tail of other vehicles existing in the visible area in front of the vehicle, branch the part of the track line image starting from the tail of the other vehicle to form two track line branches.

12. The method according to claim 11, wherein, the method further includes: When the distance between the vehicle and the other vehicle is greater than the second distance threshold and less than a third distance threshold, obtain the distance between the central axis of the vehicle and the central axis of the other vehicle; When the distance between the central axis of the vehicle and the central axis of the other vehicle is less than a fourth distance threshold, control the number of image elements filled in the two track line branches to be substantially the same; When the distance between the central axis of the vehicle and the central axis of the other vehicle is greater than the fourth distance threshold and less than a fifth distance threshold, control the number of image elements filled in the first track line branch among the two track line branches to be greater than the number of image elements filled in the second track line branch; wherein, the first track line branch is the track line branch close to the vehicle, and the second track line branch is the track line branch far from the vehicle; When the distance between the central axis of the vehicle and the central axis of the other vehicle is greater than the fifth distance threshold, keep the track line image as a whole without being divided.

13. The method according to claim 11, wherein, the method further includes: Display the track line image formed with two track line branches, and the image elements filled in the track line image formed with two track line branches through a telecentric plane.

14. A display control device, characterized in that, the device includes: a filling part, an acquisition part and a control part; wherein, the filling part is configured to fill movable fragmented image elements in the track line image, and the moving direction of the image elements is consistent with the extending direction of the track line image; the acquisition part is configured to acquire information on the road conditions ahead of the vehicle; the control part is configured to control the moving speed of the movable fragmented image elements according to the information on the road conditions ahead.

15. A display control device, characterized in that, the device includes: a processor and a memory; the processor is used to execute the instructions stored in the memory to implement the display control method according to any one of claims 1 to 13.

16. A computer-readable storage medium, characterized in that, the computer-readable storage medium stores at least one instruction, and the at least one instruction is used to be executed by a processor to implement the display control method according to any one of claims 1 to 13.

17. A head-up display device, characterized in that, the head-up display device includes a display control part and a display part; wherein, the display control part is configured to fill movable fragmented image elements in the track line image, and the moving direction of the image elements is consistent with the extending direction of the track line image; and, acquire information on the road conditions ahead of the vehicle; and, control the moving speed of the movable fragmented image elements according to the information on the road conditions ahead; the display part is configured to project the track line image and the image elements onto the windshield of the vehicle for display based on the control of the display control part.

18. A vehicle, characterized in that, the vehicle includes the head-up display device according to claim 17.

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