CN111131807B - Method and system for simulating and displaying vehicle light projection - Google Patents
Method and system for simulating and displaying vehicle light projection Download PDFInfo
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- CN111131807B CN111131807B CN201911423938.3A CN201911423938A CN111131807B CN 111131807 B CN111131807 B CN 111131807B CN 201911423938 A CN201911423938 A CN 201911423938A CN 111131807 B CN111131807 B CN 111131807B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/363—Image reproducers using image projection screens
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
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Abstract
The invention discloses a projection method for simulating and displaying vehicle lamplight, which is used for a vehicle-mounted system, wherein after receiving an operation signal, the vehicle-mounted system can acquire light source information of a first vehicle lamp and a projection material corresponding to the projection effect of the first vehicle lamp from prestored projection materials based on the operation signal; and then obtaining light transmittance information based on the projection material, wherein the light transmittance information can simulate a virtual plane mirror, so that the light source information can be virtually projected and displayed in the form of the virtual plane mirror by texture drawing based on the light transmittance information and the light source information, and therefore, the projection taking the light transmittance information as the effect of the virtual plane mirror can be displayed on a screen of a vehicle-mounted system. Therefore, the invention provides a method for 3D display of the special light projection effect of the vehicle, and the projection effect of the vehicle light can be displayed in real time on the vehicle-mounted screen.
Description
Technical Field
The invention relates to the technical field of automobile control, in particular to a method and a system for simulating and displaying vehicle light projection.
Background
With the development of science and technology, the technology of automobiles is changing day by day, and the requirement of users on an on-board system is not only to realize basic automobile control, but also to high-end vehicle models, 3D display of the state of a vehicle in the on-board system is an important symbol of high-end configuration. For example, a lighting projection effect of a vehicle is displayed in 3D in an in-vehicle system.
The existing Light projection effect display in the 3D scene is a single Light effect, such as Directional Light (Directional Light), Point Light (Point Light), spotlight (Spot Light), and Area Light (Area Light). The car light may have projection such as shape or text, for example, projection display of greeting words or car brand logo. Therefore, how to simulate and realize the display of the light projection effect of the vehicle in a 3D environment is an urgent technical problem to be solved.
Disclosure of Invention
In view of the above, a method and system for simulated display vehicle light projection is proposed to overcome or at least partially solve the above problems.
On one hand, the present application provides the following technical solutions through an embodiment of the present application:
a method of analog display of a vehicle light projection for an on-board system, the method comprising:
receiving an operation signal;
acquiring light source information of a first vehicle lamp and a projection material corresponding to the projection effect of the first vehicle lamp based on the operation signal; the vehicle-mounted system at least prestores a projection material corresponding to the projection effect of the first vehicle lamp;
obtaining light transmittance information based on the projection material;
and displaying projection taking the light transmittance information as a virtual plane mirror effect through texture drawing based on the light transmittance information and the light source information.
Optionally, the projection material is an image;
the obtaining of the transmittance information based on the projection material specifically includes:
extracting pixels of the image to obtain pixel information of the image;
based on the pixel information, light transmittance information is obtained.
Optionally, the projection material is a text;
the obtaining of the transmittance information based on the projection material specifically includes:
converting the text into an image;
extracting pixels of the image to obtain pixel information of the image;
based on the pixel information, light transmittance information is obtained.
Optionally, based on the light transmittance information and the light source information, by texture drawing, a projection with the light transmittance information as a virtual plane mirror effect is displayed, which specifically includes:
based on the light source information, carrying out meshing on the surface of the area where the projection effect is located to obtain a plurality of meshes containing pixel information;
obtaining a shadow map through texture drawing based on the light transmittance information;
and superposing the shadow map and the pixel information in the grid, and displaying the projection taking the light transmittance information as the virtual plane mirror effect.
Optionally, when obtaining the shadow map by texture rendering based on the light transmittance information, the texture rendering is performed by using the following formula:
lpj＝pjm*wtm*Alm；
wherein lpj denotes a shadow map, pjm denotes a perspective projection matrix, wtm denotes a view port matrix, and Alm denotes a transparency matrix formed of the light transmittance information.
Optionally, the receiving the operation signal specifically includes:
an operating signal to turn on a first vehicle light is received.
Optionally, the resolution of the virtual plane mirror is the same as the resolution of the first vehicle lamp.
In another aspect, the present application provides, by another embodiment of the present application, a system for analog display of a vehicle light projection, the system comprising:
the receiving module is used for receiving the operation signal;
the acquisition module is used for acquiring light source information of a first vehicle lamp and a projection material corresponding to the projection effect of the first vehicle lamp based on the operation signal; the vehicle-mounted system at least prestores a projection material corresponding to the projection effect of the first vehicle lamp;
the obtaining module is used for obtaining light transmittance information based on the projection material;
and the display module is used for displaying the projection taking the light transmittance information as the virtual plane mirror effect through texture drawing based on the light transmittance information and the light source information.
The invention discloses a readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
The invention discloses a vehicle-mounted electronic device which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the steps of the method are realized when the processor executes the program.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the method is used for a vehicle-mounted system, and after receiving an operation signal, the vehicle-mounted system can acquire light source information of a first vehicle lamp and a projection material corresponding to a projection effect of the first vehicle lamp from pre-stored projection materials based on the operation signal; and then obtaining light transmittance information based on the projection material, wherein the light transmittance information can simulate a virtual plane mirror, so that the light source information can be virtually projected and displayed in the form of the virtual plane mirror by texture drawing based on the light transmittance information and the light source information, and therefore, the projection taking the light transmittance information as the effect of the virtual plane mirror can be displayed on a screen of a vehicle-mounted system. Therefore, the invention provides a method for 3D display of the special light projection effect of the vehicle, the projection effect of the vehicle light can be displayed on the vehicle-mounted screen in real time, and the most intuitive information of the projection condition of the vehicle light is provided for users.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a flow chart of a method for simulating vehicle light projection display in one embodiment of the invention;
FIG. 2 is a diagram of the effects of simulated light projection in one embodiment of the invention;
FIG. 3 is a block diagram of a simulated display vehicle light projection system in accordance with an embodiment of the present invention.
Detailed Description
The embodiment of the application provides a method and a system for simulating and displaying vehicle light projection, and solves the technical problem that the light projection effect of a vehicle cannot be realized in a 3D environment in the prior art.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
a method for analog display of vehicle light projection for use with an on-board system, the method comprising: receiving an operation signal; acquiring light source information of a first vehicle lamp and a projection material corresponding to the projection effect of the first vehicle lamp based on the operation signal; the vehicle-mounted system at least prestores a projection material corresponding to the projection effect of the first vehicle lamp; obtaining light transmittance information based on the projection material; and displaying projection taking the light transmittance information as a virtual plane mirror effect through texture drawing based on the light transmittance information and the light source information.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the field of automobiles, the realization of the light projection of characters or shapes by vehicle light is easier to realize, and the realization can be realized only by adding a special shape for shielding a projection route on the light projection route. For example, a door-opening welcome lamp of a common automobile, a projected welcome word or a brand logo.
However, when the 3D display of the automobile model is performed on the central control screen of the automobile, for the authenticity of the display, the working condition of the automobile lamp needs to be displayed simultaneously when the 3D automobile model is displayed, so that the special projection effect which often occurs to the automobile needs to be displayed.
The following shows how to display the vehicle light projection effect in the automobile central control screen in a 3D dynamic simulation mode by using an embodiment.
Example one
The embodiment provides a method for simulating and displaying vehicle light projection, which is used for an on-board system and comprises the following steps:
s101, receiving an operation signal;
s102, acquiring light source information of a first vehicle lamp and a projection material corresponding to the projection effect of the first vehicle lamp based on the operation signal; the vehicle-mounted system at least prestores a projection material corresponding to the projection effect of the first vehicle lamp;
s103, obtaining light transmittance information based on the projection material;
and S104, based on the light transmittance information and the light source information, displaying the projection taking the light transmittance information as the virtual plane mirror effect through texture drawing.
It should be noted that the method of the present embodiment may be used to implement 3D simulation display of any light projection effect, but since the display of the vehicle light projection effect in the central control screen of the vehicle together with the vehicle model has special significance for the safety and human-computer interaction of the vehicle, in the present embodiment, the explanation is given by taking the vehicle light of the vehicle as an example.
The steps of the method of the present invention are explained in detail below with reference to the accompanying drawings.
Referring to fig. 1, S101 is first performed to receive an operation signal.
In the implementation process, the operation signal may be a plurality of possible operations, for example, an operation of turning on a car light, or an operation of displaying a car light projection effect in the center control screen by operating a virtual or physical key when the car light is turned on, or of course, a confirmation operation of voice or gesture may be performed, and therefore, the present invention is not limited herein.
It should be noted that, theoretically, even in the case that the vehicle lamp is not turned on, the projection effect of the vehicle lamp may be simulated to be displayed in the central control screen through preset light information data, but in order to synchronize with the actual turning-on effect of the vehicle lamp and achieve synchronous dynamic display, as an optional implementation, the receiving the operation signal related to the first vehicle lamp specifically includes:
an operating signal to turn on a first vehicle light is received.
Specifically, the operation signal for turning on the first lamp may also include various generation manners, for example, in the field of automobiles, by a knob, a key, and the like. However, a special case is considered in which when the automatic headlamp function is turned on, the operation signal when the automatic headlamp function is turned on cannot be regarded as the operation signal for synchronization. In this case, a signal when the headlight is turned on may be sent as the operating signal from the vehicle central controller, and for example, when the signal is detected, the headlight projection effect starts to be exhibited.
In addition, the first lamp may be any lamp on the vehicle, such as a headlight, a tail lamp, a fog lamp, a special welcome lamp, and the like, and is not particularly limited herein.
Next, executing S102, obtaining light source information of a first vehicle lamp and a projection material corresponding to the projection effect of the first vehicle lamp based on the operation signal; and at least a projection material corresponding to the first vehicle lamp projection effect is prestored in the vehicle-mounted system.
It can be understood that, in order to display the light projection effect, the light source information about the first vehicle lamp and the projection material corresponding to the first vehicle lamp projection effect must be obtained. In order to obtain real-time performance, the related information of the vehicle lamp of the vehicle can be implanted into the vehicle-mounted system in advance for being called at any time.
It should be noted that, in order to simulate the real projection effect of the displayed light at the corresponding position of the automobile model, the light source information includes the light source position of the light, the projection angle and range of the light, and the like. By utilizing the information such as the light source position of the light, the projection angle and the range of the light and the like, the light effect can be accurately displayed in the 3D scene.
Next, S103 is executed to obtain light transmittance information based on the projection material.
In the specific implementation process, the projection material is an image or text material of a real object such as the shape, characters and symbols of the special projection effect which is pre-displayed, and is equivalent to a special-shaped plate which shields the projection route in the real projection of the light.
The transmittance data at the projection effect can be obtained by conversion according to the projection material, for example, the transmittance is 0 at the position of complete shielding.
As a possible case, the projection material is an image; the image includes the projection effect that the car light wants to show, see fig. 2, which includes the projection effect of a praise shape, a smile shape, and the like. The image containing the above elements is taken as projection material.
In order to obtain light transmittance information from an image, the obtaining light transmittance information based on the projection material specifically includes:
extracting pixels of the image to obtain pixel information of the image;
based on the pixel information, light transmittance information is obtained.
Specifically, the conversion of the light transmittance may be performed according to the magnitude of the pixel value.
As another possible case, the projection material is a text; the image includes the projection effect that the car light wants to show, see fig. 2, and the shown projection effect includes text projection effects such as "high-convergence hiphi", "chinese luck", and the like. The Chinese and English texts are used as projection materials.
Since the text information cannot be directly recognized, the obtaining of the transmittance information based on the projection material specifically includes:
converting the text into an image;
extracting pixels of the image to obtain pixel information of the image;
based on the pixel information, light transmittance information is obtained.
After the text is converted into the image, the method for obtaining the transmittance subsequently is the same as that in the first case, and is not described herein again.
Next, S104 is executed, and based on the light transmittance information and the light source information, a projection with the light transmittance information as a virtual plane mirror effect is displayed through texture rendering.
In the specific implementation process, the light source information can realize the display of the basic light projection effect, and the light transmittance information can realize the projection effect of the virtual plane mirror.
The virtual plane mirror adopts the principle of plane imaging and simulates the display of the projection effect.
Specifically, based on the light transmittance information and the light source information, drawing through texture, and displaying the projection with the light transmittance information as a virtual plane mirror effect specifically includes:
based on the light source information, carrying out meshing on the surface of the area where the projection effect is located to obtain a plurality of meshes containing pixel information;
obtaining a shadow map through texture drawing based on the light transmittance information;
and superposing the shadow map and the pixel information in the grid, and displaying the projection taking the light transmittance information as the virtual plane mirror effect.
Specifically, when obtaining the shadow map by texture rendering based on the light transmittance information, the texture rendering is performed by using the following formula:
lpi＝pjm*wtm*Alm；
wherein lpj denotes a shadow map, pjm denotes a perspective projection matrix, wtm denotes a view port matrix, and Alm denotes a transparency matrix formed of the light transmittance information.
It should be noted that the perspective projection matrix describes a frustum of the visual range of the virtual camera, and the viewport matrix describes three-dimensional vector information of the virtual camera position, the lens focus position, and the upward direction of the camera.
For convenience of calculation, and the virtual and real effects are consistent, as an alternative embodiment, the resolution of the virtual plane mirror is consistent with the resolution of the first vehicle lamp.
Wherein, first lamp light source is the spotlight, can adopt DLP, 60 ten thousand + microchip of pixel: w × H1152 px 576 px. The resolution of the virtual flat mirror is consistent with the resolution of the DLP lamp.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the method is used for a vehicle-mounted system, and after receiving an operation signal, the vehicle-mounted system can acquire light source information of a first vehicle lamp and a projection material corresponding to a projection effect of the first vehicle lamp from pre-stored projection materials based on the operation signal; and then obtaining light transmittance information based on the projection material, wherein the light transmittance information can simulate a virtual plane mirror, so that the light source information can be virtually projected and displayed in the form of the virtual plane mirror by texture drawing based on the light transmittance information and the light source information, and therefore, the projection taking the light transmittance information as the effect of the virtual plane mirror can be displayed on a screen of a vehicle-mounted system. Therefore, the invention provides a method for 3D display of the special light projection effect of the vehicle, the projection effect of the vehicle light can be displayed on the vehicle-mounted screen in real time, and the most intuitive information of the projection condition of the vehicle light is provided for users.
Example two
Based on the same inventive concept as the first embodiment, the present embodiment provides a system for analog display of vehicle light projection, referring to fig. 3, the system comprising:
the receiving module is used for receiving the operation signal;
the acquisition module is used for acquiring light source information of a first vehicle lamp and a projection material corresponding to the projection effect of the first vehicle lamp based on the operation signal; the vehicle-mounted system at least prestores a projection material corresponding to the projection effect of the first vehicle lamp;
the obtaining module is used for obtaining light transmittance information based on the projection material;
and the display module is used for displaying the projection taking the light transmittance information as the virtual plane mirror effect through texture drawing based on the light transmittance information and the light source information.
Since the simulated display vehicle light projection system described in this embodiment is a system for implementing the simulated display vehicle light projection method described in the first embodiment of this application, a person skilled in the art can understand the specific implementation manner of the system of this embodiment and its various modifications based on the simulated display vehicle light projection method described in the first embodiment of this application, and therefore, how to implement the method in this embodiment of this application by the system will not be described in detail herein. The system adopted by the person skilled in the art to implement the method for projecting the simulated display vehicle light in the embodiment of the present application is within the protection scope of the present application.
Based on the same inventive concept as in the previous embodiments, embodiments of the present invention further provide a readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of any of the methods described above.
Based on the same inventive concept as that in the foregoing embodiments, an embodiment of the present invention further provides an in-vehicle electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the steps of any one of the foregoing methods
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A method for analog display of a vehicle light projection for use in an onboard system, the method comprising:
receiving an operation signal;
acquiring light source information of a first vehicle lamp and a projection material corresponding to the projection effect of the first vehicle lamp based on the operation signal; the vehicle-mounted system at least prestores a projection material corresponding to the projection effect of the first vehicle lamp;
obtaining light transmittance information based on the projection material, including: extracting pixels of the projection material to obtain pixel information of the projection material; obtaining light transmittance information based on the pixel information;
based on the luminousness information with the light source information, through texture drawing, show with luminousness information is the projection of virtual level crossing effect, include: based on the light source information, carrying out meshing on the surface of the area where the projection effect is located to obtain a plurality of meshes containing pixel information; obtaining a shadow map through texture drawing based on the light transmittance information; and superposing the shadow map and the pixel information in the grid, and displaying the projection taking the light transmittance information as the virtual plane mirror effect.
2. A method for analog display of a vehicle light projection as claimed in claim 1, wherein the projection material is an image;
the obtaining of the transmittance information based on the projection material specifically includes:
extracting pixels of the image to obtain pixel information of the image;
based on the pixel information, light transmittance information is obtained.
3. A method for analog display of a vehicle light projection as claimed in claim 1, characterized in that the projection material is a text;
the obtaining of the transmittance information based on the projection material specifically includes:
converting the text into an image;
extracting pixels of the image to obtain pixel information of the image;
based on the pixel information, light transmittance information is obtained.
4. The method for simulating a vehicle light projection according to claim 1, wherein the texture mapping is performed by using the following formula when obtaining the shadow map by texture mapping based on the light transmittance information:
lpj＝pjm*wtm*Alm；
wherein lpj denotes a shadow map, pjm denotes a perspective projection matrix, wtm denotes a view port matrix, and Alm denotes a transparency matrix formed of the light transmittance information.
5. The method for analog display of a vehicle light projection according to claim 1, wherein the receiving of the operation signal specifically comprises:
an operating signal to turn on a first vehicle light is received.
6. A method for simulating a display vehicle light projection as claimed in claim 1, wherein the resolution of the virtual mirror is the same as the resolution of the first vehicle light.
7. A system for analog display of a vehicle light projection, the system comprising:
the receiving module is used for receiving the operation signal;
the acquisition module is used for acquiring light source information of a first vehicle lamp and a projection material corresponding to the projection effect of the first vehicle lamp based on the operation signal; the vehicle-mounted system at least prestores a projection material corresponding to the projection effect of the first vehicle lamp;
an obtaining module, configured to obtain transmittance information based on the projection material, including: extracting pixels of the projection material to obtain pixel information of the projection material; obtaining light transmittance information based on the pixel information;
the display module is used for drawing through the texture based on the luminousness information with the light source information, shows with luminousness information is the projection of virtual level crossing effect, includes: based on the light source information, carrying out meshing on the surface of the area where the projection effect is located to obtain a plurality of meshes containing pixel information; obtaining a shadow map through texture drawing based on the light transmittance information; and superposing the shadow map and the pixel information in the grid, and displaying the projection taking the light transmittance information as the virtual plane mirror effect.
8. A readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
9. An in-vehicle electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1-6 are implemented when the processor executes the program.
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| CN201911423938.3A CN111131807B (en) | 2019-12-30 | 2019-12-30 | Method and system for simulating and displaying vehicle light projection |
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| CN111757571B (en) * | 2020-07-10 | 2021-08-20 | 华人运通(上海)云计算科技有限公司 | Car light control system and car thereof |
| CN115103171A (en) * | 2022-06-21 | 2022-09-23 | 中国第一汽车股份有限公司 | Projection method, projection device, electronic equipment and storage medium |
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