A Laser Coaxial Holographic Display Method Based on Vehicle Lighting

Abstract

The present invention relates to the technical field of vehicle lighting, and specifically relates to a laser coaxial holographic display method based on vehicle lighting, including: receiving vehicle navigation road information in real time, and determining whether the currently traveling vehicle applies the holographic display function based on the vehicle navigation road information; if the determination result is no, jump to the vehicle navigation road information receiving stage and perform the receiving operation of the vehicle navigation road information again; if the determination result is yes, use a 3D holographic projection device as the holographic image storage carrier. The present invention uses the 3D holographic projection device as an auxiliary device for the vehicle high beam lamp, which can provide lighting for the vehicle driving user and further assist in providing a reminder effect for surrounding vehicles in the driving scenario, effectively reducing the visual interference of the vehicle high beam lamp on the oncoming vehicle driving user in the oncoming vehicle scenario, and greatly improving the safety of using the high beam lamp.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lighting, and particularly relates to a laser coaxial holographic display method based on vehicle lighting. Background Art

[0002] Automobile high beams are an important part of the vehicle lighting system. They have high brightness and a long irradiation distance, enabling the driver to see the road conditions in the distance more clearly on roads with dim light, such as in the suburbs or sections without street lights, and make judgments in advance. However, improper use is likely to cause glare to the drivers of oncoming vehicles, so it is necessary to use them reasonably according to traffic regulations to ensure driving safety.

[0003] Existing automobile high beams can be divided into halogen high beams, xenon high beams, and LED high beams. They provide a longer visible distance for the driver at night, but for oncoming vehicles or pedestrians, it is easy to cause the driver or pedestrian of the oncoming vehicle to be unable to see obstacles, roads and other scenery in the forward direction, thus increasing the risk of traffic accidents to a certain extent;

[0004] For this reason, a laser coaxial holographic display method based on vehicle lighting is proposed. Summary of the Invention

[0005] Aiming at the above-mentioned disadvantages of the prior art, the present invention provides a laser coaxial holographic display method based on vehicle lighting, which solves the technical problems proposed in the above background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions:

[0007] A laser coaxial holographic display method based on vehicle lighting includes:

[0008] Receive vehicle navigation road information in real time, and decide whether to apply the holographic display function to the currently moving vehicle based on the vehicle navigation road information; if the decision result is no, jump to the vehicle navigation road information receiving stage and perform the receiving operation of the vehicle navigation road information again; if the decision result is yes, use a 3D holographic projection device as the holographic image storage carrier, connect the 3D holographic projection device to the vehicle high beam power circuit, so that when the 3D holographic projection device is controlled to turn on by the high beam power circuit, the high beam is turned off, and when the high beam power circuit controls the high beam to turn on, the 3D holographic projection device is turned off; bind the holographic image stored in the 3D holographic projection device to the high beam operation mode, traverse the vehicle navigation road information, and capture the holographic display area in the high beam operation mode based on the vehicle navigation road information; collect the road surface image of the vehicle's driving road through the camera installed on the vehicle, sense the flatness of the road surface of the vehicle's driving road through the horizontal sensing sensor installed on the vehicle, and adjust the projection size of the 3D holographic projection device based on the road surface image and the flatness data; set the projection angle adjustment logic of the 3D holographic projection device, and decide whether to adjust the projection angle of the 3D holographic projection device based on the projection angle adjustment logic of the 3D holographic projection device; if the decision result is no, display the holographic image through the 3D holographic projection device according to the holographic image bound to the high beam operation mode; if the decision result is yes, identify the distance between the currently moving vehicle and the surrounding vehicles on the same side, capture a point between the currently moving vehicle and the surrounding vehicles, so that the distance from the capture point to each surrounding vehicle and the currently moving vehicle is equal, and use the capture point as the center of the 3D holographic projection device projection.

[0009] Further, the receiving operation of the vehicle navigation road information is executed by any single-chip microcomputer with data transceiver function. The vehicle navigation road information includes: the lane where the currently moving vehicle is located, the driving speed of the currently moving vehicle, the speed limit of the lane where the currently moving vehicle is located, the relative position parameters of the surrounding vehicles of the currently moving vehicle, and whether the road where the currently moving vehicle is located is a one-way lane. The vehicle navigation road information comes from the navigation system installed on the vehicle. The frequency of the single-chip microcomputer receiving the vehicle navigation road information follows: the larger the ratio of the driving speed of the currently moving vehicle to the speed limit of the lane where the currently moving vehicle is located, the higher the frequency of the single-chip microcomputer receiving the vehicle navigation road information, and vice versa, the lower the frequency.

[0010] Among them, the determination of whether the road where the currently moving vehicle is located is a one-way lane in the vehicle navigation road information, that is: whether the lane where the currently moving vehicle is located and its adjacent variable lanes allow U-turns. If U-turns are allowed, the decision result of whether to apply the holographic display function is no; if U-turns are not allowed, the decision result of whether to apply the permission display function is yes.

[0011] Further, the holographic image stored in the 3D holographic projection device is manually uploaded by the user terminal.

[0012] The high beam operation modes include: always-on high beam, continuous on / off of high beam;

[0013] When the holographic display area is captured under the high beam operation mode, the vehicle navigation road information applied includes the lane where the current driving vehicle is located, the driving speed of the current driving vehicle, the speed limit of the lane where the current driving vehicle is located, and the relative position parameters of the surrounding vehicles of the current driving vehicle, and it is the latest set of received vehicle navigation road information. The relative position parameters of the surrounding vehicles of the current driving vehicle include: the relative distance, angle between the surrounding vehicle and the current driving vehicle, and the driving speed of the surrounding vehicle;

[0014] Among them, when the holographic display area is captured under the high beam operation mode, the holographic display area is captured based on the capture logic.

[0015] Furthermore, the capture logic is:

[0016] Based on the relative distance and angle between the current driving vehicle and the surrounding vehicles, construct a plane graph of the distribution position relationship between the current driving vehicle and the surrounding vehicles, and represent the current driving vehicle and the surrounding vehicles with different graphics in the plane graph;

[0017] Identify the risk areas of the surrounding vehicles according to the vehicle navigation road information, take the risk areas of the surrounding vehicles as the segmentation areas, perform segmentation processing in the plane graph of the distribution position relationship between the current driving vehicle and the surrounding vehicles, and the remaining area of the plane graph is used to capture the holographic display area;

[0018] Determine the center of the remaining area of the plane graph, the projection size of the 3D holographic projection device, and the projection range of the 3D holographic projection device;

[0019] Capture the area in the intersection of the remaining area of the plane graph and the projection range of the 3D holographic projection device, which can at least completely accommodate the maximum projection size of the 3D holographic projection device and is the closest to the center of the remaining area of the plane graph, as the holographic display area under the high beam operation mode.

[0020] Furthermore, the risk area identification logic of the surrounding vehicles is expressed as:

[0021]

[0022] In the formula: a and b are the length and width representing the surrounding vehicle graph; ε is an additional value; p is the area defined by the length (a + ε) and width (b + ε) representing the equidistant magnification of the surrounding vehicle graph; q is the number of adjacent lanes between the surrounding vehicle and the current driving vehicle; V infrontof is the driving speed of the surrounding vehicle; V self is the driving speed of the current driving vehicle; V max is the speed limit of the road where the vehicle is located; γ is a normalization factor;

[0023] Among them, "in front of" indicates the situation where the surrounding vehicle is in front of the currently moving vehicle, and "after" indicates the situation where the surrounding vehicle is behind the currently moving vehicle.

[0024] Furthermore, the vehicle driving road surface images are a group, and the horizontal perception sensor perceives several groups of slope parameters of the vehicle driving road surface flatness parameters. Based on the road surface images and slope parameters, the estimated interference of the holographic display area relative to the 3D holographic projection is analyzed, the upper and lower limits of the projection size of the 3D holographic projection device are set, the projection scaling ratio of the 3D holographic projection device is set, and the projection size of the 3D holographic projection device is adjusted by combining the analysis result of the estimated interference of the holographic display area relative to the 3D holographic projection and the projection scaling ratio;

[0025] Among them, after scaling the 3D holographic projection size based on the estimated interference analysis result and the projection scaling ratio, if the scaling result exceeds the upper limit of the projection size, the upper limit of the projection size is taken as the final projection scaling size, and if the scaling result exceeds the lower limit of the projection size, the lower limit of the projection size is taken as the final projection scaling size.

[0026] Furthermore, the analysis logic of the estimated interference of the holographic display area relative to the 3D holographic projection is expressed as:

[0027]

[0028] In the formula: is the estimated interference; is the interference value shown by the road surface image; n is the number of slope parameter perceptions; S i is the slope sensed for the i-th time; ω1, ω2 are weights;

[0029] Among them, both weights ω1 and ω2 are greater than zero, and the sum of weights ω1 and ω2 is 1. The number of times the horizontal perception sensor senses the slope of the vehicle driving road surface is the number of times the horizontal perception sensor runs within the time domain defined from the start to the end of the road surface image acquisition operation based on a specified frequency. The interference value takes the information entropy of the road surface image.

[0030] Furthermore, after obtaining the estimated interference a group of interference media is further customized by the user side. When the estimated interference is greater than the interference threshold,

[0031] When the estimated interference is less than the interference threshold,

[0032] Where: P is the projection size of the adjusted 3D holographic projection device; P0 is the initial projection size of the 3D holographic projection device; K is the projection scaling ratio; is the interference threshold;

[0033] Among them, the initial projection size P0 of the 3D holographic projection device is defaultly taken as the median of the threshold determined by the upper and lower limits of the projection size.

[0034] Furthermore, when the projection angle adjustment operation is not performed, the projection position of the 3D holographic projection device is the center of the holographic display area.

[0035] Furthermore, the 3D holographic projection devices are configured in one-to-one correspondence with the high beams installed on the vehicle, and the operation target for determining the projection center of the 3D holographic projection device is each 3D holographic projection device.

[0036] Adopting the technical solution provided by the present invention, compared with the known public technology, it has the following beneficial effects:

[0037] The present invention provides a laser coaxial holographic display method based on vehicle lighting. During the execution of this method, as an auxiliary device for the vehicle high beam, the 3D holographic projection device can provide lighting for the vehicle driving user, and at the same time, it can further assist in providing a reminder effect for surrounding vehicles in the driving scenario, effectively reducing the visual interference of the vehicle high beam on the oncoming vehicle driving user in the oncoming vehicle scenario, greatly improving the safety of using the high beam, and this method can intelligently control the 3D holographic projection device, so as to achieve 3D projection adaptive coordination adapted to the driving scenario and ensure that the projection generated by the 3D holographic projection device more meets the requirements of the driving scenario. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is a schematic flow chart of a laser coaxial holographic display method based on vehicle lighting. Detailed Embodiments

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] The present invention will be further described below in conjunction with embodiments.

[0042] Embodiment 1:

[0043] A laser coaxial holographic display method based on a vehicle lighting lamp in this embodiment is as Figure 1 shown and includes:

[0044] Receiving vehicle navigation road information in real time, and determining whether the currently traveling vehicle should apply the holographic display function based on the vehicle navigation road information;

[0045] If the decision result is no, jump to the vehicle navigation road information receiving stage and perform the receiving operation of the vehicle navigation road information again;

[0046] If the decision result is yes, use a 3D holographic projection device as the holographic image storage carrier, connect the 3D holographic projection device to the vehicle high beam power circuit, so that when the 3D holographic projection device is turned on by the high beam power circuit control, the high beam is turned off, and when the high beam power circuit controls the high beam to be turned on, the 3D holographic projection device is turned off;

[0047] Bind the holographic image stored in the 3D holographic projection device to the high beam operation mode, traverse the vehicle navigation road information, and capture the holographic display area in the high beam operation mode based on the vehicle navigation road information;

[0048] Collect the road surface image of the vehicle's traveling road through the camera installed on the vehicle, sense the flatness of the vehicle's traveling road surface through the horizontal perception sensor installed on the vehicle, and adjust the projection size of the 3D holographic projection device based on the road surface image and the flatness data;

[0049] The road surface image of the vehicle's traveling road is a group, and the flatness parameter of the vehicle's traveling road surface sensed by the horizontal perception sensor is several groups of slope parameters. Analyze the estimated interference of the holographic display area relative to the 3D holographic projection based on the road surface image and the slope parameters, set the upper and lower limits of the projection size of the 3D holographic projection device, set the projection scaling ratio of the 3D holographic projection device, and adjust the projection size of the 3D holographic projection device in combination with the analysis result of the estimated interference of the holographic display area relative to the 3D holographic projection and the projection scaling ratio;

[0050] Among them, after scaling the 3D holographic projection size based on the estimated interference analysis result and the projection scaling ratio, if the scaling result exceeds the upper limit of the projection size, the upper limit of the projection size is taken as the final projection scaling size; if the scaling result exceeds the lower limit of the projection size, the lower limit of the projection size is taken as the final projection scaling size;

[0051] The analysis logic of the estimated interference of the holographic display area relative to the 3D holographic projection is expressed as:

[0052]

[0053] In the formula: is the estimated interference; is the interference value shown by the road surface image; n is the number of times of slope parameter perception; S i is the slope perceived at the i-th time; ω1 and ω2 are weights;

[0054] Among them, both weights ω1 and ω2 are greater than zero, and the sum of weights ω1 and ω2 is 1. The number of times the horizontal perception sensor perceives the slope of the road surface where the vehicle travels is the number of times the horizontal perception sensor operates within the time domain defined from the start to the end of the road surface image acquisition operation based on the specified frequency. The interference value shown by the road surface image takes the information entropy of the road surface image;

[0055] Estimated interference After obtaining the estimated interference, a group of interference media is further customized by the user side. When the estimated interference is greater than the interference threshold value,

[0056] Estimated interference is less than the interference threshold value,

[0057] In the formula: P is the projection size of the adjusted 3D holographic projection device; P0 is the initial projection size of the 3D holographic projection device; K is the projection scaling ratio; is the interference threshold value;

[0058] Among them, the initial projection size P0 of the 3D holographic projection device is default to take the median value of the threshold determined by the upper limit and the lower limit of the projection size;

[0059] Set the projection angle adjustment logic of the 3D holographic projection device, and decide whether to adjust the projection angle of the 3D holographic projection device based on the projection angle adjustment logic of the 3D holographic projection device;

[0060] If the decision result is no, the 3D holographic projection device displays the holographic image according to the holographic image bound corresponding to the high beam operation mode;

[0061] If the decision result is yes, identify the distance between the current moving vehicle and the surrounding vehicles on the same side. Capture a point between the current moving vehicle and the surrounding vehicles so that the distances from the capture point to each surrounding vehicle and the current moving vehicle are equal. Use the capture point as the center of the 3D holographic projection device for projection.

[0062] In this embodiment, by implementing the method in the above embodiment, it provides a further auxiliary effect for the vehicle high beam illumination function, replacing the high beam function effect to a certain extent, thereby reducing the driving risks caused by improper use of high beams.

[0063] In this method, through the limitation of the analysis logic of the estimated interference of the holographic display area relative to the 3D holographic projection, it provides a specified adjustment logic support for the 3D holographic projection device to adjust the projection size, ensuring that the 3D holographic projection device can adaptively complete the adjustment of the projection size.

[0064] Embodiment 2:

[0065] At the specific implementation level, based on Embodiment 1, this embodiment further specifically describes a laser coaxial holographic display method based on vehicle lighting in Embodiment 1 with reference to Figure 1 as shown:

[0066] The operation of receiving vehicle navigation road information is executed by any single-chip microcomputer with data transceiver functions. The vehicle navigation road information includes: the lane where the current moving vehicle is located, the driving speed of the current moving vehicle, the speed limit of the lane where the current moving vehicle is located, the relative position parameters of the surrounding vehicles of the current moving vehicle, and whether the road where the current moving vehicle is located is a single-direction lane. The vehicle navigation road information is sourced from the navigation system installed on the vehicle. The frequency of the single-chip microcomputer receiving the vehicle navigation road information follows: the larger the ratio of the driving speed of the current moving vehicle to the speed limit of the lane where the current moving vehicle is located, the higher the frequency of the single-chip microcomputer receiving the vehicle navigation road information; conversely, the lower the frequency.

[0067] Among them, the determination of whether the road where the current moving vehicle is located is a single-direction lane in the vehicle navigation road information, that is: whether the lane where the current moving vehicle is located and its adjacent variable lanes allow U-turns. If U-turns are allowed, the decision result of whether to apply the holographic display function is no; if U-turns are not allowed, the decision result of whether to apply the permission display function is yes.

[0068] The holographic images stored in the 3D holographic projection device are manually uploaded by the user terminal.

[0069] The high beam operation modes include: high beam always on, high beam continuously on and off.

[0070] When capturing the holographic display area in the high beam operation mode, the vehicle navigation road information applied includes the lane where the current driving vehicle is located, the driving speed of the current driving vehicle, the speed limit of the lane where the current driving vehicle is located, and the relative position parameters of the surrounding vehicles of the current driving vehicle, and it is the latest set of received vehicle navigation road information. The relative position parameters of the surrounding vehicles of the current driving vehicle include: the relative distance, angle between the surrounding vehicle and the current driving vehicle, and the driving speed of the surrounding vehicle;

[0071] Among them, when capturing the holographic display area in the high beam operation mode, the holographic display area is captured based on the capture logic.

[0072] Through the above settings, the capture logic of the holographic display area is further defined to ensure that when the 3D holographic projection device performs the projection operation, it can be displayed in the specified area to ensure the effectiveness of the projection generated by the operation of the 3D projection holographic device.

[0073] Such as Figure 1 shown, the capture logic is:

[0074] Based on the relative distance and angle between the current driving vehicle and the surrounding vehicles, construct a distribution position relationship plan view of the current driving vehicle and the surrounding vehicles, and represent the current driving vehicle and the surrounding vehicles with different graphics in the plan view;

[0075] Identify the risk area of the surrounding vehicles according to the vehicle navigation road information, use the risk area of the surrounding vehicles as the segmentation area, and perform segmentation processing in the distribution position relationship plan view of the current driving vehicle and the surrounding vehicles. The remaining area of the plan view is used to capture the holographic display area;

[0076] Determine the center of the remaining area of the plan view, the projection size of the 3D holographic projection device, and the projection range of the 3D holographic projection device;

[0077] Capture the area in the intersection of the remaining area of the plan view and the projection range of the 3D holographic projection device, which can at least completely accommodate the maximum projection size of the 3D holographic projection device and is the closest to the center of the remaining area of the plan view, as the holographic display area in the high beam operation mode;

[0078] The risk area identification logic of the surrounding vehicles is expressed as:

[0079]

[0080] In the formula: a and b are the length and width representing the surrounding vehicle graphics; ε is an additional value; p is the area defined by the length (a + ε) and width (b + ε) representing the equidistant magnification of the surrounding vehicle graphics; q is the number of lanes between the surrounding vehicle and the current driving vehicle; V infrontof is the driving speed of the surrounding vehicle; V self is the driving speed of the current driving vehicle; Vmax is the speed limit of the road where the vehicle is located; γ is the normalization factor;

[0081] Among them, "in frontof" represents the situation where the surrounding vehicle is in front of the currently moving vehicle, and "after" represents the situation where the surrounding vehicle is behind the currently moving vehicle.

[0082] In this embodiment, through the above settings and the limitation of the surrounding vehicle risk area recognition logic, the capture logic of the holographic display area is further limited.

[0083] Such as Figure 1 As shown, when the projection angle adjustment operation is not performed, the projection position of the 3D holographic projection device is the center of the holographic display area;

[0084] The 3D holographic projection device is configured in one-to-one correspondence with the high beam lights installed on the vehicle, and the operation target for determining the projection center of the 3D holographic projection device is each 3D holographic projection device.

[0085] In summary, during the execution of the method in the above embodiment, by using the 3D holographic projection device as an auxiliary device for the vehicle high beam lights, while providing illumination for the user driving the vehicle, it can further assist in providing a prompt effect for the surrounding vehicles in the driving scenario, effectively reducing the visual interference of the vehicle high beam lights on the oncoming vehicle driving user in the oncoming vehicle scenario, greatly improving the safety of using high beam lights, and this method can intelligently control the 3D holographic projection device, so as to achieve 3D projection adaptive coordination suitable for the driving scenario, ensuring that the projection generated by the 3D holographic projection device better meets the requirements of the driving scenario.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser coaxial holographic display method based on a vehicle lighting lamp, characterized in that Including: Receiving vehicle navigation road information in real time, and deciding whether the currently traveling vehicle should apply the holographic display function based on the vehicle navigation road information; If the decision result is no, jump to the vehicle navigation road information receiving stage and perform the receiving operation of the vehicle navigation road information again; If the decision result is yes, use the 3D holographic projection device as the holographic image storage carrier, connect the 3D holographic projection device to the vehicle high beam power circuit, so that when the high beam power circuit controls the 3D holographic projection device to turn on, the high beam is turned off, and when the high beam power circuit controls the high beam to turn on, the 3D holographic projection device is turned off; Bind the holographic image stored in the 3D holographic projection device to the high beam operation mode, traverse the vehicle navigation road information, and capture the holographic display area in the high beam operation mode based on the vehicle navigation road information; Collect the road surface image of the vehicle's traveling road through the camera installed on the vehicle, sense the flatness of the road surface of the vehicle's traveling road through the horizontal sensing sensor installed on the vehicle, and adjust the projection size of the 3D holographic projection device based on the road surface image and the flatness data; Set the projection angle adjustment logic of the 3D holographic projection device, and decide whether to adjust the projection angle of the 3D holographic projection device based on the projection angle adjustment logic of the 3D holographic projection device; If the decision result is no, display the holographic image through the 3D holographic projection device according to the holographic image bound to the high beam operation mode; If the decision result is yes, identify the distance between the currently traveling vehicle and the surrounding vehicles on the same side, capture a point between the currently traveling vehicle and the surrounding vehicles, so that the distance from the capture point to each surrounding vehicle and the currently traveling vehicle is equal, and use the capture point as the center of the projection of the 3D holographic projection device.

2. The laser coaxial holographic display method based on a vehicle lighting lamp according to claim 1, wherein The receiving operation of the vehicle navigation road information is executed by any single-chip microcomputer with data transceiver function. The vehicle navigation road information includes: the lane where the currently traveling vehicle is located, the traveling speed of the currently traveling vehicle, the speed limit of the lane where the currently traveling vehicle is located, the relative position parameters of the surrounding vehicles of the currently traveling vehicle, whether the road where the currently traveling vehicle is located is a single-direction lane. The vehicle navigation road information comes from the navigation system installed on the vehicle. The frequency of the single-chip microcomputer receiving the vehicle navigation road information follows that the larger the ratio of the traveling speed of the currently traveling vehicle to the speed limit of the lane where the currently traveling vehicle is located, the higher the frequency of the single-chip microcomputer receiving the vehicle navigation road information, and vice versa, the lower the frequency; Among them, the determination of whether the road where the currently traveling vehicle is located is a single-direction lane in the vehicle navigation road information, that is: whether the lane where the currently traveling vehicle is located and its adjacent variable lanes allow U-turns. If U-turns are allowed, the decision result of whether to apply the holographic display function is no. If U-turns are not allowed, the decision result of whether to apply the permission display function is yes.

3. A laser coaxial holographic display method based on a vehicle lighting lamp according to claim 1, characterized in that, The holographic image stored in the 3D holographic projection device is manually uploaded by the user terminal; The high beam operation modes include: high beam always on, high beam continuously on and off; When capturing the holographic display area in the high beam operation mode, the vehicle navigation road information applied includes the lane where the current driving vehicle is located, the driving speed of the current driving vehicle, the speed limit of the lane where the current driving vehicle is located, and the relative position parameters of the surrounding vehicles of the current driving vehicle, and it is the latest set of received vehicle navigation road information. The relative position parameters of the surrounding vehicles of the current driving vehicle include: the relative distance, angle between the surrounding vehicle and the current driving vehicle, and the driving speed of the surrounding vehicle. Among them, when capturing the holographic display area in the high beam operation mode, the holographic display area is captured based on the capture logic.

4. A laser coaxial holographic display method based on a vehicle lighting lamp according to claim 3, characterized in that, The capture logic is as follows: Based on the relative distance and angle between the current driving vehicle and the surrounding vehicles, construct a plane graph of the distribution position relationship between the current driving vehicle and the surrounding vehicles, and represent the current driving vehicle and the surrounding vehicles with different graphics in the plane graph. Identify the risk areas of the surrounding vehicles according to the vehicle navigation road information, take the risk areas of the surrounding vehicles as the segmentation areas, and perform segmentation processing in the plane graph of the distribution position relationship between the current driving vehicle and the surrounding vehicles. The remaining area of the plane graph is used to capture the holographic display area. Determine the center of the remaining area of the plane graph, the projection size of the 3D holographic projection device, and the projection range of the 3D holographic projection device. Capture the intersection area between the remaining area of the plane graph and the projection range of the 3D holographic projection device, and take the area that can at least completely accommodate the maximum projection size of the 3D holographic projection device and is closest to the center of the remaining area of the plane graph as the holographic display area in the high beam operation mode.

5. A laser coaxial holographic display method based on a vehicle lighting lamp according to claim 4, characterized in that, The risk area identification logic of the surrounding vehicles is expressed as: Where: a and b represent the length and width of the surrounding vehicle graphics; ε is an added value; p is the area defined by the length (a + ε) and width (b + ε) representing the equally spaced magnification of the surrounding vehicle graphics; q is the number of lanes separating the surrounding vehicle from the currently moving vehicle; V infrontof is the driving speed of the surrounding vehicle; V self is the driving speed of the currently moving vehicle; V max is the speed limit of the road where the vehicle is located; γ is a normalization factor; Among them, infrontof represents the situation where the surrounding vehicle is in front of the current driving vehicle, and after represents the situation where the surrounding vehicle is behind the current driving vehicle.

6. A laser coaxial holographic display method based on a vehicle lighting lamp according to claim 1, characterized in that, The vehicle driving road surface images are a group. The horizontal perception sensor senses several groups of slope parameters of the vehicle driving road surface flatness parameters. Based on the road surface images and slope parameters, analyze the estimated interference of the holographic display area relative to the 3D holographic projection, set the upper and lower limits of the projection size of the 3D holographic projection device, set the projection scaling ratio of the 3D holographic projection device, and adjust the projection size of the 3D holographic projection device in combination with the analysis result of the estimated interference of the holographic display area relative to the 3D holographic projection and the projection scaling ratio. Among them, after scaling the 3D holographic projection size based on the estimated interference analysis result and the projection scaling ratio, if the scaling result exceeds the upper limit of the projection size, then take the upper limit of the projection size as the final projection scaling size; if the scaling result exceeds the lower limit of the projection size, then take the lower limit of the projection size as the final projection scaling size.

7. A laser coaxial holographic display method based on a vehicle lighting lamp according to claim 6, characterized in that The analysis logic of the estimated interference of the holographic display area relative to the 3D holographic projection is expressed as: Wherein: is the estimated interference; is the interference value shown by the road surface image; n is the number of slope parameter perception times; S i is the slope sensed at the i-th time; ω1 and ω2 are weights; Among them, both weights ω1 and ω2 are greater than zero, and the sum of weights ω1 and ω2 is 1. The number of times the horizontal perception sensor senses the slope of the road surface on which the vehicle travels is the number of times the horizontal perception sensor operates within the time domain defined from the start to the end of the road surface image acquisition operation based on a specified frequency. The interference value shown in the road surface image Take the information entropy of the road surface image.

8. A laser coaxial holographic display method based on a vehicle lighting lamp according to claim 7, characterized in that, The estimated interference After obtaining, a group of interference media is further customized by the user side to estimate the interference When it is greater than the interference threshold value Estimated interference When it is less than the interference threshold value, Where: P is the projection size of the adjusted 3D holographic projection device; P0 is the initial projection size of the 3D holographic projection device; K is the projection scaling ratio; is the interference threshold value; Among them, the initial projection size P0 of the 3D holographic projection device is default to take the median of the threshold determined by the upper and lower limits of the projection size.

9. A laser coaxial holographic display method based on a vehicle lighting lamp according to claim 1, characterized in that When the projection angle adjustment operation is not performed, the projection position of the 3D holographic projection device is the center of the holographic display area.

10. A laser coaxial holographic display method based on a vehicle lighting lamp according to claim 1, characterized in that, The 3D holographic projection device is configured in one-to-one correspondence with the high beam installed on the vehicle, and the operation target of determining the projection center of the 3D holographic projection device is each 3D holographic projection device.

Images