CN115866222A

CN115866222A - Projection area determining method and device and electronic equipment

Info

Publication number: CN115866222A
Application number: CN202211534864.2A
Authority: CN
Inventors: 杨丰瑞; 王晖; 罗志刚
Original assignee: Avatr Technology Chongqing Co Ltd
Current assignee: Avatr Technology Chongqing Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-03-28

Abstract

The embodiment of the invention relates to the technical field of vehicle design, and discloses a method and a device for determining a projection area and electronic equipment, wherein the method comprises the following steps: acquiring first simulation data of projection equipment, second simulation data of shadow bearing equipment and third simulation data of eyepoints of a user; wherein the first simulation data comprises simulation point data of a plurality of projection points; establishing a projection line on the shadow bearing equipment based on the simulation point data, the second simulation data and the third simulation data; determining a reflection point of the projection point based on the projection line; and determining a projection area based on the inverted points of all the projection points. By applying the technical scheme of the invention, whether the arrangement position of the projection equipment is proper or not can be quickly and efficiently determined, the calculated amount can be reduced, and the accuracy of the determined reflection point can be improved.

Description

Projection area determining method and device and electronic equipment

Technical Field

The embodiment of the invention relates to the technical field of vehicle design, in particular to a method and a device for determining a projection area and electronic equipment.

Background

With the high-speed development of vehicle intellectualization, the vehicle-mounted screen is more and more widely used. For example, an in-vehicle screen may be utilized to provide navigation, reverse vision, etc. to the driver. However, if the position of the in-vehicle screen disposed in the vehicle is not reasonable, a projection of the in-vehicle screen may be formed on the glass surface of the front windshield or the side windshield. Thus, the projection area formed on the glass surface may affect the safety view of the driver, thereby causing a safety hazard.

At present, in order to avoid potential safety hazards caused by a projection area formed by a vehicle-mounted screen, in a vehicle research and development process, simulation software is used for analyzing the projection area formed by the projection equipment on the projection equipment based on the projection equipment corresponding to the vehicle-mounted screen in the simulation software and the projection equipment corresponding to the glass surface in the simulation software, and optimizing the arrangement position of the projection equipment based on an analysis result of the simulation software.

However, the existing method for determining the projection area is complex and large in calculation amount, and the projection area cannot be determined quickly and efficiently.

Disclosure of Invention

In view of the foregoing problems, embodiments of the present invention provide a method for determining a projection area, which is used to solve the problems that a method for determining a projection area in the prior art is complex, has a large calculation amount, and cannot determine a projection area quickly and efficiently.

According to an aspect of the embodiments of the present invention, there is provided a method for determining a projection area, the method including:

acquiring first simulation data of projection equipment, second simulation data of shadow bearing equipment and third simulation data of eyepoints of a user; wherein the first simulation data comprises simulation point data of a plurality of projection points on the projection device;

establishing a projection line on the shadow bearing equipment based on the simulation point data, the second simulation data and the third simulation data;

determining a reflection point of the projection point based on the projection line;

and determining a projection area based on the inverted points of all the projection points.

In an optional manner, the establishing a projection line on the image bearing device based on the simulation point data, the second simulation data, and the third simulation data includes:

establishing a first connecting line based on the simulation point data and the third simulation data;

and establishing a projection line on the shadow bearing equipment based on the first connecting line and the second simulation data.

In an alternative mode, the determining a reflection point of the projection point based on the projection line includes:

selecting alternative reflection points on the projection line, wherein the alternative reflection points are any points on the projection line;

establishing a second connecting line based on the alternative reflection point and the simulation point data;

establishing a third connecting line based on the alternative projection point and the third analog data;

determining an incident angle and a reflection angle corresponding to the alternative reflection point based on the second connecting line and the third connecting line; the incident angle is an included angle between the second connecting line and a normal line, the reflection angle is an included angle between the third connecting line and the normal line, and the normal line passes through the alternative reflection point and is perpendicular to the image bearing equipment;

and if the incident angle corresponding to the alternative reflection point is equal to the reflection angle, determining the alternative reflection point as the reflection point of the projection point on the projection line.

In an optional manner, the method further comprises:

and if the incident angles and the reflection angles corresponding to all the alternative reflection points on the projection line are not equal, determining that the reflection points do not exist on the projection equipment.

In an optional manner, the method further includes:

if the projection line corresponding to the first connecting line does not exist on the image bearing equipment, determining that the reflection point does not exist on the image bearing equipment by the projection point.

In an alternative mode, the obtaining third simulation data of the user eyepoint includes:

acquiring first eyepoint simulation data of the first eyepoint and second eyepoint simulation data of the second eyepoint;

using the first eyepoint simulation data and/or the second eyepoint simulation data as the third simulation data; alternatively, the first and second electrodes may be,

and determining the third simulation data according to the first eyepoint simulation data and the second eyepoint simulation data.

In an optional manner, after the obtaining the first eyepoint simulation data of the first eyepoint and the second eyepoint simulation data of the second eyepoint, the method includes:

respectively taking the first eyepoint simulation data and the second eyepoint simulation data as the third simulation data, and sequentially determining a corresponding first projection area and a corresponding second projection area;

determining the projection region based on the first projection region and the second projection region.

In an optional manner, the method further comprises:

determining a safe view area of the shadow bearing equipment based on the second simulation data of the shadow bearing equipment;

determining whether the arrangement position of the projection equipment is suitable or not based on the safe visual field area and the projection area.

According to another aspect of the embodiments of the present invention, there is provided an apparatus for determining a projection area, the apparatus including:

the acquisition module is used for acquiring first analog data of the projection equipment, second analog data of the shadow bearing equipment and third analog data of eyepoints of a user; wherein the first simulation data comprises simulation point data for a plurality of proxels on the projection device;

the projection line establishing module is used for establishing a projection line on the shadow bearing equipment based on the simulation point data, the second simulation data and the third simulation data;

a reflection point determining module, configured to determine a reflection point of the projection point based on the projection line;

and the projection area determining module is used for determining a projection area based on the reflection points of all the projection points.

In an optional manner, the projection line establishing module is specifically configured to establish a first connection line based on the simulation point data and the third simulation data; and establishing a projection line on the shadow bearing equipment based on the first connecting line and the second simulation data.

In an optional manner, the reflection point determining module is specifically configured to select a candidate reflection point on the projection line, where the candidate reflection point is any point on the projection line; establishing a second connecting line based on the alternative reflection point and the simulation point data; establishing a third connecting line based on the alternative projection point and the third analog data; determining an incident angle and a reflection angle corresponding to the alternative reflection point based on the second connecting line and the third connecting line; the incidence angle is an included angle between the second connecting line and a normal line, the reflection angle is an included angle between the third connecting line and the normal line, and the normal line passes through the alternative reflection point and is perpendicular to the image bearing equipment; and if the incident angle corresponding to the alternative reflection point is equal to the reflection angle, determining the alternative reflection point as the reflection point of the projection point on the projection line.

In an optional manner, the projection area determining module is further configured to determine that the reflection angle is not equal to an incident angle corresponding to all the candidate reflection points on the projection line, where the reflection angle is not equal to the incident angle.

In an optional manner, the projection area determining module is further configured to determine that the reflection point does not exist on the image bearing device for the projection point if the projection line corresponding to the first connection line does not exist on the image bearing device.

In an optional manner, the user eyepoint includes a first eyepoint and a second eyepoint, and the obtaining module is specifically configured to obtain first eyepoint simulation data of the first eyepoint and second eyepoint simulation data of the second eyepoint; using the first eyepoint simulation data and/or the second eyepoint simulation data as the third simulation data; or determining the third simulation data according to the first eyepoint simulation data and the second eyepoint simulation data.

In an optional manner, the projection area determining module is specifically configured to respectively use the first eyepoint simulation data and the second eyepoint simulation data as the third simulation data, and sequentially determine a corresponding first projection area and a corresponding second projection area; determining the projection region based on the first projection region and the second projection region.

According to another aspect of the embodiments of the present invention, there is provided an electronic device including: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus; the memory is used for storing at least one executable instruction, and the executable instruction causes the processor to execute the operation of the projection area determination method in any one of the above invention contents.

According to a further aspect of the embodiments of the present invention, there is provided a computer-readable storage medium, in which at least one executable instruction is stored, and when the executable instruction is executed on a determination apparatus/electronic device of a projection area, the determination apparatus/electronic device of the projection area performs the operation of the determination method of the projection area as described in any one of the above contents.

The method for determining the projection area provided by the embodiment of the invention can check whether the arrangement position of the projection equipment is proper or not under the working environment of simulation software, so that the arrangement scheme optimization and the projection check of the projection equipment can be synchronously performed without repeatedly using a plurality of design software for projection check, the projection check process can be simplified, and whether the arrangement position of the projection equipment is proper or not can be quickly and efficiently determined. In addition, in the method for determining a projection area according to the embodiment of the present invention, when determining the reflection point of the projection point, the range of the reflection point of the projection point is first reduced to the projection line on the projection-receiving device, and then the reflection point of the projection point on the projection line is determined based on the projection line, the reflection point and the eye point of the user. Therefore, compared with a scheme of directly finding the reflection points corresponding to the projection points on the image bearing equipment, the method and the device can reduce the calculation amount of the determined reflection points and improve the accuracy of the determined reflection points.

The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and in order that the technical solutions of the embodiments of the present invention can be clearly understood, the embodiments of the present invention can be implemented according to the content of the description, and the above and other objects, features, and advantages of the embodiments of the present invention can be more clearly understood, the detailed description of the present invention is provided below.

Drawings

The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic flow chart illustrating a method for determining a projection area according to the present invention;

FIG. 2 is a schematic diagram illustrating a method for establishing a projection line on a shadow bearing device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a projection region determining apparatus provided in the present invention;

fig. 4 shows a schematic structural diagram of an electronic device provided by the present invention.

Description of the reference numerals

10-image bearing device, 20-projection device, 21-projection point, 30-in-vehicle user, 31-user eyepoint, and 40-alternative reflection point.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein.

Some parts with light-reflecting properties, such as instrument panels, vehicle screens, metal strip interiors, etc., are often included in vehicles. These components with light-reflecting properties exert their own beneficial effects and may also have some negative effects. For example, if the arrangement position of these components having light reflecting properties in the vehicle is not reasonable, a corresponding projection may be formed on the glass surface of the front windshield or the side windshield. Thus, the projection formed on the glass surface may affect the view of the driver, thereby bringing about a safety hazard.

Taking a component with a light reflection property as an on-board screen and a glass surface as a glass surface of a vehicle window as an example, at present, in order to avoid potential safety hazards brought by a projection area formed by the on-board screen on the glass surface, in a vehicle research and development process, simulation software is generally used to analyze the projection area formed by the projection equipment on the projection equipment based on projection equipment corresponding to the on-board screen in the simulation software and shadow bearing equipment corresponding to the glass surface in the simulation software, and the arrangement position of the projection equipment is optimized based on an analysis result of the simulation software.

However, the existing method for determining the projection area is complex, and the projection area cannot be determined quickly and efficiently. For example, although vehicle design engineers often use CAITA software to design vehicles, the CAITA software does not have a projection verification function, and therefore, each time projection verification is performed, a vehicle model designed by the CAITA software is introduced into software such as UG, ramsis, CAVA, and options to perform projection verification.

However, due to factors such as data format and software version, the projection device, the image bearing device, and the like designed by the CAITA software need to be converted in format before being imported into software such as UG to perform projection verification. And the projection equipment, the shadow bearing equipment and the like after format conversion are embodied in UG and other software in a parameter elimination mode, so that if the UG and other software determines that the arrangement scheme of the projection equipment is unreasonable, the arrangement parameters of the projection equipment cannot be directly adjusted in the UG and other software, the arrangement parameters of the projection equipment also need to be adjusted on CAITA software again, and the adjusted projection equipment is guided into the UG and other software for checking. Thus, at least two design software are required to complete the projection verification.

Therefore, when the projection verification is carried out on the vehicle scheme designed by the CAITA software, a plurality of design software needs to be repeatedly used, and the operation is complicated, time-consuming and low in efficiency.

The invention discloses a method and a device for determining a projection area and electronic equipment, and aims to solve the problems that when projection verification is carried out on a vehicle scheme designed by CAITA software, a plurality of pieces of design software need to be used repeatedly, the operation is complicated, the time is consumed, and the efficiency is low.

The method for determining the projection area can perform projection check based on a vehicle scheme designed by the CAITA software, can realize scheme optimization and projection check synchronously based on the CAITA software, and does not need to repeatedly use a plurality of design software for projection check.

Illustratively, a projection checking template can be created based on CAITA software, and the projection checking template is used for executing the method for determining the projection area disclosed by the present invention, so that the designed vehicle-mounted screen can be mapped into the CAITA software, and the projection device can be obtained in the CAITA software. Correspondingly, the designed glass surface can be mapped into the CAITA software, and the shadow bearing equipment can be obtained in the CAITA software. Then, whether the arrangement position of the projection equipment is proper or not can be determined by directly utilizing a projection checking template in CAITA software without repeatedly using a plurality of design software, so that the projection checking process can be simplified, and whether the arrangement position of the projection equipment is proper or not can be quickly and efficiently determined.

It should be noted that the method for determining a projection region disclosed in the embodiment of the present invention is not only applicable to CAITA software, but also applicable to UG, ramsis, CAVA, options, and other software.

The following provides an exemplary description of a method for determining a projection area according to an embodiment of the present invention.

Fig. 1 is a flowchart illustrating a method for determining a projection area, which is performed by an electronic device according to an embodiment of the present invention. As shown in fig. 1, the method comprises the steps of:

step 110: first simulation data of the projection device, second simulation data of the projection device and third simulation data of the eyepoint of the user are obtained.

It should be noted that, in the following description of the embodiments of the present invention, the projection device, the shadow bearing device, and the user's eye point all refer to corresponding objects in simulation software (e.g., software such as CAITA, UG, ramsis, CAVA, options, etc.).

The projection device in the embodiment of the present invention may correspond to any component in the vehicle, which has a light reflecting property and is capable of forming a projection on the shadow bearing device, for example, the projection device may correspond to an instrument panel, a vehicle-mounted screen, a metal strip trim, and the like.

The first analog data may include position information, angle information, size information, etc. of the projection device. For example, the projection device corresponds to an in-vehicle screen, and the corresponding first analog data may include position information, angle information, size information, and the like corresponding to the in-vehicle screen.

By shadow bearing device is meant a device bearing a projection, as may be a front or side windshield corresponding to a vehicle.

The second simulation data may include position information of a window frame of the simulated vehicle, position information of a glass face of the window, size information of the glass face of the window, curvature of the glass face of the window, and the like.

The user eyepoint is used in the present invention to characterize the position of the eyes of a user (e.g., a driver) in a simulated vehicle. The user eyepoints include a first eyepoint corresponding to a left eye of the user and a second eyepoint corresponding to a right eye of the user, for example.

The present invention may use the first eyepoint simulation data of the first eyepoint and/or the second eyepoint simulation data of the second eyepoint as the third simulation data. For example, first eyepoint simulation data of a first eyepoint and second eyepoint simulation data of a second eyepoint may be obtained; then, the first eyepoint simulation data or the second eyepoint simulation data is used as third simulation data, or both the first eyepoint simulation data and the second eyepoint simulation data are used as third simulation data.

The present invention may also determine third simulation data based on the first eyepoint simulation data for the first eyepoint and the second eyepoint simulation data for the second eyepoint. For example, first eyepoint simulation data of a first eyepoint and second eyepoint simulation data of a second eyepoint may be obtained; third simulation data is then determined based on the first eyepoint simulation data and the second eyepoint simulation data. For example, a center point between the first eyepoint and the second eyepoint may be determined based on the first eyepoint simulation data and the second eyepoint simulation data, and finally, the center point may be taken as the third simulation data.

The calculation method for the user eyepoint may be different in different vehicle design requirement standards, and the user eyepoint can be calculated according to any one of the existing standards. For example, the user's eyepoint in a vehicle may be calculated based on the ergonomically arranged human hard points and the SAE 941 standard.

It should be noted that, the first simulation data of the projection device, the second simulation data of the shadow bearing device, and the third simulation data of the user eyepoint may be input by a user (such as a vehicle design engineer), or may be acquired from a server or a local storage, which is not limited by the present invention. The server or the local storage may store the first analog data of the projection device, the second analog data of the image bearing device, and the third analog data of the user eyepoint.

The first analog data comprises analog point data of a plurality of projection points on the projection equipment. The method of determining the projection point is not limited in the present invention.

Illustratively, the proxels may be points on the outline of the projection device. Wherein the outline of the projection device refers to an outer edge line of the projection device. For example, the projection device corresponds to a rectangular vehicle-mounted screen, and the corresponding outline of the vehicle-mounted screen is a rectangular frame. For another example, the projection device corresponds to a circular dashboard, and the outline corresponding to the circular dashboard is a circular frame.

In this way, the contour of the projection device may be extracted based on the first simulation data of the projection device, and then a plurality of proxels may be further selected on the contour of the projection device. The invention is also not limited to the selection of a plurality of projections on the contour of the projection device. For example, the plurality of proxels may be equally spaced on the contour of the projection device such that any two adjacent proxels of the plurality of proxels are equally spaced on the contour of the projection device.

In addition, after the contour of the projection device is extracted, the extracted contour of the projection device may be displayed on a display interface. The location of each proxel may also be identified on the display interface.

The invention is also not limited to the specific implementation of extracting the contour of the projection device. For example, an extraction function carried by the simulation software can be called to extract the outline of the projection device. For another example, a single contour extraction function may be designed, and then the contour of the projection device may be extracted using the contour extraction function.

Because the projection area corresponding to the contour of the projection equipment can reflect the maximum projection area of the projection equipment on the projection equipment, the projection area of the projection equipment on the projection equipment can be determined based on the contour of the projection equipment. Further, the projection area of the projection device on the projection device is determined based on the plurality of projection points on the outline of the projection device, so that the calculation amount for determining the projection area can be reduced.

Step 120: and establishing a projection line on the shadow bearing equipment based on the simulation point data, the second simulation data and the third simulation data.

First, the present invention can extract the configuration of the image bearing apparatus based on the second simulation data.

Taking the example that the image bearing device corresponds to the front windshield, the front windshield includes two surfaces, one of which is located on the inner side of the vehicle, and the other of which is located on the outer side of the vehicle. Since the in-vehicle projection apparatus forms a projection on the glass surface located on the inner side of the vehicle, the glass surface in the embodiment of the present invention refers to the glass surface located on the inner side of the vehicle in the vehicle window.

After the glass surface of the front windshield is extracted, a structural diagram, such as a three-dimensional diagram or a two-dimensional diagram, of the extracted glass surface may be displayed on a display interface. For example, based on the CAITA software, when step 120 is executed, a three-dimensional map of the glass surface may be displayed on the display interface in the working environment of the CAITA software. For another example, based on the UG software, when the step 120 is executed, a three-dimensional map of the glass surface may be displayed on the display interface in the working environment of the UG software.

The specific implementation manner of extracting the glass surface of the front windshield is not limited in the invention. For example, the extraction function of the simulation software can be called to extract the glass surface of the front windshield. For example, a single glass surface extraction function may be designed, and then the glass surface of the front windshield may be extracted using the glass surface extraction function.

Then, the first connection line may be established based on the simulation point data and the third simulation data.

And finally, establishing a projection line on the shadow bearing equipment based on the first connecting line and the second simulation data.

Fig. 2 is a schematic diagram of a method for establishing a projection line on a shadow bearing device according to an embodiment of the present invention. Fig. 2 shows a simulation software interface comprising a support device 10, a projection device 20, a user 30 in a vehicle, and a user eyepoint 31.

As shown in fig. 2, the reflection point of the first projection point 21 on the contour of the projection device 20 is determined as an example. First, a first connection line l between the user eyepoint 31 and the projected point 21 is constructed based on the simulation point data and the third simulation data ₁ (ii) a Then, the first connecting line l is connected ₁ Projected on the image bearing device 10, a projection line L of the first connecting line L1 on the image bearing device 10 is obtained _Throw-in 。

It should be noted that if the first connection line l exists on the image bearing device 10 ₁ Corresponding projection line l _Throw-in Then, the projection line l is represented _{Throw in} There may be a reflection point corresponding to the proxel 21 so that the subsequent step 130 may be continued to determine that the proxel 21 is on the projection line l _Throw-in Upper inverted image point. If the first connecting line l does not exist on the image bearing device 10 ₁ Corresponding projection line l _Throw-in It means that the projection point 21 does not form an inverted image point on the image bearing apparatus 10, and thus the step of determining the inverted image point of the projection point 21 on the image bearing apparatus 10 ends.

Step 130: based on the projection lines, the reflection points of the projection points are determined.

At present, in the process of performing reflection check based on software such as UG, ramsis, CAVA, and options, for example, a method for determining a reflection point of a projection point on a projection-bearing device 10 usually finds a reflection point corresponding to the projection point on the whole projection-bearing device, which has a problem that the calculation amount is large and the found reflection point is not necessarily accurate.

In the embodiment of the present invention, the range of the reflection point of the projection point 21 is first reduced to the projection line l on the image-bearing device 10 _Throw-in Based on the projection line l _Throw-in A projected point 21 and a user eyepoint 31, determining that the projected point 21 is on a projection line l _Throw-in The point of inversion above. Thus, compared with a scheme of directly finding the reflection point corresponding to the projection point 21 on the image bearing device 10, the method and the device can reduce the calculation amount of the determined reflection point and improve the accuracy of the determined reflection point.

In an implementation, based on the projection-based line l _Throw-in Determining the reflection point of the projection point 21 can be implemented as follows: referring to fig. 2, the projection line l may be first projected _Throw-in Selecting an alternative reflection point 40, wherein the alternative reflection point 40 is a projection line l _{Throw in} At any point thereon. Then, based on the alternative reflection point 40 and the analog point data, a second connection line l is established ₂ Thus, the connection between the alternative proxel 40 and proxel 21 is obtained first. Then, based on the alternative projection point 40 and the third analog data, a third connection line l is established ₃ This results in a connecting line between the alternative proxel 40 and the user eyepoint 31. Then, based on the second connecting line l ₂ And the third connecting line l ₃ Determining an incident angle α and a reflection angle β corresponding to the alternative reflection point 40, wherein the incident angle α is the second connecting line l ₂ To the normal l _{Method of} The included angle between the first connecting line and the second connecting line and the reflection angle beta is a third connecting linel ₃ To the normal l _{Method of} The included angle therebetween. Wherein the normal line l _{Method of} Through the alternative reflection point 40 and perpendicular to the support apparatus 10. Finally, when the incident angle α and the reflection angle β corresponding to the alternative reflection point 40 are the same, the alternative reflection point 40 is determined as the projection point 21 on the projection line l _Throw-in The inverted image point above.

That is, the present invention traverses the projection line l _Throw-in Finding the alternative reflection point 40 satisfying the condition that the incident angle alpha and the reflection angle beta are equal in size, and determining the alternative reflection point 40 satisfying the condition that the incident angle alpha and the reflection angle beta are equal in size as the projection point 21 on the projection line l _{Throw in} The inverted image point above.

It should be noted that if the projection line l is on _Throw-in The sizes of the incident angle α and the reflection angle β corresponding to all the alternative reflection points 40 are not equal, and it is determined that there is no reflection point on the image bearing apparatus 10 for the projection point 21.

After determining the reflection point corresponding to the first projection point 21, the above step 130 is repeated to determine the reflection point corresponding to each of the remaining projection points on the contour of the projection device 20 one by one. In this way, the reflection point corresponding to each projection point on the contour of the projection apparatus 20 is obtained.

Step 140: and determining a projection area based on the inverted points of all the projection points.

Taking the projection device corresponding to the on-vehicle screen as an example, after the reflection points corresponding to each projection point on the contour of the projection device 20 are obtained, the area surrounded by the sequentially connected reflection points is determined as the projection area of the projection device 20 on the projection device 10.

It should be noted that, if the third simulation data is the first eyepoint simulation data of the first eyepoint or the second eyepoint simulation data of the second eyepoint, or the third simulation data is data based on the first eyepoint simulation data and the second eyepoint simulation data, the projection area may be determined according to the method provided in the foregoing embodiment. That is, if the third simulation data corresponds to an eyepoint position, each of the plurality of projection points corresponds to an inverted image point, so that the inverted image point of each of the plurality of projection points can define an area, i.e., a projection area of the projection apparatus.

If the third simulation data includes the first eyepoint simulation data and the second eyepoint simulation data, when the projection area of the projection device is determined, the first eyepoint simulation data and the second eyepoint simulation data can be respectively used as the third simulation data, and the corresponding first projection area and the corresponding second projection area are sequentially determined; then, based on the first projection region and the second projection region, a projection region is determined.

For example, a first projection line on the image bearing device may be established based on the simulation point data, the second simulation data, and the first eyepoint simulation data; then, based on the first projection line, determining a first reflection point of the projection point; then, a first projection area is determined based on the first reflection points of all the projection points. Establishing a second projection line on the image bearing equipment based on the simulation point data, the second simulation data and the second eyepoint simulation data; then, determining a second inverted point of the projection point based on the second projection line; then, a second projection area is determined based on the second reflection points of all the projection points. And finally, determining the union of the first projection area and the second projection area as a projection area.

The step of establishing the first projection line and the second projection line may refer to the description of step 120; the step of determining the first reflection point and the second reflection point can be referred to the description of step 130; the step of determining the first and second sub-projection areas may be as described above with reference to step 140. The above description is omitted.

In order to check whether the arrangement position of the projection device is proper, after the projection area of the projection device is determined, the method further comprises the following steps: firstly, acquiring a safe visual field area on a shadow bearing device; then, based on the safe view area and the projection area, it is determined whether the arrangement position of the projection apparatus is appropriate.

The safe view area may be a safe view area calculated according to a relevant standard. For example, the safe view area corresponding to the glass surface 10 in the vehicle can be calculated according to the front view requirement of the automobile driver and the national standard GB11532-2014 of the measuring method.

In an implementation manner, whether the arrangement position of the projection device is appropriate or not is determined based on the safe view area and the projection area, and the method can be implemented as follows: whether the safe visual field area and the projection area have an overlapping area is determined. If so, further determining whether the overlapping area is larger than a preset area threshold. And if the overlapping area is larger than the preset area threshold, determining that the arrangement position of the projection equipment is not appropriate, and needing to readjust the first analog data of the projection equipment. And if no overlapping area exists or the overlapping area is less than or equal to the preset area threshold value, determining that the arrangement position of the projection equipment is proper and not needing to readjust the first analog data of the projection equipment.

Further, after the first analog data of the projection device is adjusted, the adjusted first analog data of the projection device may be obtained again, and the projection area may be determined again based on the adjusted first analog data of the projection device.

For example, a projection checking template may be created based on CAITA software, and the projection checking template is used to perform the above steps of determining the projection area and determining whether the arrangement position of the projection device is appropriate. After the projection checking template is triggered, an input window can be displayed on a display interface of the CAITA software in a working environment, and a user can input the adjusted first simulation data of the projection equipment through the input window. Then, the projection checking template calculates a projection area and determines whether the arrangement position of the projection device is proper based on the input adjusted first simulation data of the projection device. Therefore, when the arrangement position of the projection equipment is not appropriate, the first simulation data of the projection equipment can be directly adjusted in the CAITA software, then, the adjusted first simulation data of the projection equipment is input again under the working environment of the CAITA software, whether the arrangement position of the adjusted projection equipment is appropriate is checked again, and the checking is repeated until the arrangement position of the projection equipment is adjusted to be appropriate. Therefore, scheme optimization and projection checking can be synchronously carried out in the CAITA software, and a plurality of pieces of design software do not need to be repeatedly used for projection checking.

Accordingly, the checking result may be displayed on a display interface in the working environment of the CAITA software, wherein the checking result may be displayed graphically and/or textually. For example, the safe view area, the projection area, and the overlapping area of the safe view area and the projection area are displayed on the display interface, and the area value of the overlapping area is displayed in the overlapping area of the safe view area and the projection area. Thus, the user can intuitively receive the projection check result.

It should be noted that the above embodiment is only exemplified by the case where the image bearing device 10 corresponds to the glass surface of the front windshield, and does not represent a limitation to the image bearing device 10, and for example, the image bearing device 10 may correspond to the glass surface of the side windshield. When the image-bearing device 10 corresponds to the glass surface of a side windshield, the corresponding projection area can be determined by using the method provided in the above embodiment.

To sum up, the method for determining the projection area provided by the embodiment of the present invention at least has the following beneficial effects: firstly, whether the arrangement position of the projection equipment is proper or not can be checked under the working environment of simulation software (such as CAITA software), so that the arrangement scheme optimization and the projection check of the projection equipment can be synchronously performed, a plurality of design software is not required to be repeatedly used for projection check, the projection check process can be simplified, and whether the arrangement position of the projection equipment is proper or not can be quickly and efficiently determined. Secondly, when the inverted image point of the projection point is determined, the range of the inverted image point of the projection point is firstly reduced to the projection line on the projection equipment, and then the inverted image point of the projection point on the projection line is determined based on the projection line, the projection point and the eye point of the user. Therefore, compared with a scheme of directly finding the reflection points corresponding to the projection points on the image bearing equipment, the method and the device can reduce the calculation amount of the determined reflection points and improve the accuracy of the determined reflection points. In addition, the method for determining the projection region provided by the embodiment of the invention is also suitable for UG, RAMSIS, CAVA, OPTIS and other software, and under the working environment of UG, RAMSIS, CAVA, OPTIS and other simulation software, the method for determining the projection region provided by the embodiment of the invention can reduce the calculated amount and improve the accuracy of the determined reflection point.

The following are examples of apparatus provided by the present invention that may be used to perform method embodiments of the present invention. For details which are not disclosed in the embodiments of the apparatus of the present invention, reference is made to the embodiments of the method of the present invention.

Fig. 3 is a schematic structural diagram illustrating a device for determining a projection area according to an embodiment of the present invention. As shown in fig. 3, the apparatus 200 includes: an acquisition module 210, a projection line establishing module 220, a reflection point determining module 230, and a projection region determining module 240.

The obtaining module 210 is configured to obtain first analog data of a projection device, second analog data of a shadow bearing device, and third analog data of a user eyepoint; wherein the first simulation data comprises simulation point data of a plurality of projection points on the projection device;

a projection line establishing module 220, configured to establish a projection line on the image bearing device based on the simulation point data, the second simulation data, and the third simulation data;

a reflection point determining module 230, configured to determine a reflection point of the projection point based on the projection line;

and a projection region determining module 240, configured to determine a projection region based on the reflection points of all the projection points.

In an optional manner, the projection line establishing module 220 is specifically configured to establish a first connection line based on the simulation point data and the third simulation data; and establishing a projection line on the shadow bearing equipment based on the first connecting line and the second simulation data.

In an optional manner, the reflection point determining module 230 is specifically configured to select a candidate reflection point on the projection line, where the candidate reflection point is any point on the projection line; establishing a second connecting line based on the alternative reflection point and the simulation point data; establishing a third connecting line based on the alternative projection point and the third analog data; determining an incident angle and a reflection angle corresponding to the alternative reflection point based on the second connecting line and the third connecting line; the incident angle is an included angle between the second connecting line and a normal line, the reflection angle is an included angle between the third connecting line and the normal line, and the normal line passes through the alternative reflection point and is perpendicular to the image bearing equipment; and if the incident angle corresponding to the alternative reflection point is equal to the reflection angle, determining the alternative reflection point as the reflection point of the projection point on the projection line.

In an optional manner, the projection area determining module 240 is further configured to determine that the reflection angle is not equal to the incident angle corresponding to all the candidate reflection points on the projection line, where the reflection angle is not equal to the incident angle.

In an optional manner, the projection area determining module 240 is further configured to determine that the reflection point does not exist on the image bearing device for the projection point if the projection line corresponding to the first connection line does not exist on the image bearing device. In an optional manner, the user eyepoint includes a first eyepoint and a second eyepoint, and the obtaining module 210 is specifically configured to obtain first eyepoint simulation data of the first eyepoint and second eyepoint simulation data of the second eyepoint; taking the first eyepoint simulation data and/or the second eyepoint simulation data as the third simulation data; or determining the third simulation data according to the first eyepoint simulation data and the second eyepoint simulation data.

In an optional manner, the projection area determining module 240 is specifically configured to respectively use the first eyepoint simulation data and the second eyepoint simulation data as the third simulation data, and sequentially determine a corresponding first projection area and a corresponding second projection area; determining the projection region based on the first projection region and the second projection region.

By applying the technical scheme of the invention, when the inverted image point of the projection point is determined, the range of the inverted image point of the projection point is firstly reduced to the projection line on the image bearing equipment, and then the inverted image point of the projection point on the projection line is determined based on the projection line, the projection point and the eye point of the user. Therefore, compared with a scheme of directly finding the reflection points corresponding to the projection points on the projection equipment, the method and the device can reduce the calculation amount of the determined reflection points and improve the accuracy of the determined reflection points.

Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and the specific embodiment of the present invention does not limit the specific implementation of the electronic device.

As shown in fig. 4, the electronic device may include: a processor (processor) 302, a communication Interface 304, a memory 306, and a communication bus 308.

Wherein: the processor 302, communication interface 304, and memory 306 communicate with each other via a communication bus 308. A communication interface 304 for communicating with network elements of other devices, such as clients or other servers. The processor 302 is configured to execute the program 310, and may specifically perform relevant steps in the embodiment of the method for determining a projection area.

In particular, program 310 may include program code comprising computer-executable instructions.

The processor 302 may be a central processing unit CPU, or an Application Specific Integrated Circuit ASIC (Application Specific Integrated Circuit), or one or more Integrated circuits configured to implement embodiments of the present invention. The electronic device includes one or more processors, which may be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs.

And a memory 306 for storing a program 310. Memory 306 may comprise high-speed RAM memory and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

Specifically, the program 310 may be invoked by the processor 302 to cause the electronic device to perform the following operations:

determining an incident angle and a reflection angle corresponding to the alternative reflection point based on the second connecting line and the third connecting line; the incidence angle is an included angle between the second connecting line and a normal line, the reflection angle is an included angle between the third connecting line and the normal line, and the normal line passes through the alternative reflection point and is perpendicular to the image bearing equipment;

In an optional manner, the method further comprises:

and if the sizes of the incident angle and the reflection angle corresponding to all the alternative reflection points on the projection line are not equal, determining that the reflection points do not exist on the projection point on the projection bearing equipment.

In an optional manner, the method further comprises:

By applying the technical scheme of the invention, when the inverted image point of the projection point is determined, the range of the inverted image point of the projection point is firstly reduced to the projection line on the image bearing equipment, and then the inverted image point of the projection point on the projection line is determined based on the projection line, the projection point and the eye point of the user. Therefore, compared with a scheme of directly finding the reflection points corresponding to the projection points on the image bearing equipment, the method and the device can reduce the calculation amount of the determined reflection points and improve the accuracy of the determined reflection points.

An embodiment of the present invention provides a computer-readable storage medium, where the storage medium stores at least one executable instruction, and when the executable instruction is executed on a determination apparatus/electronic device of a projection area, the determination apparatus/electronic device of the projection area performs the method for determining the projection area in any method embodiment described above.

The executable instructions may be specifically configured to cause the determination apparatus/electronic device of the projection area to perform the following operations:

establishing a first connection line based on the simulation point data and the third simulation data;

and if the incident angle corresponding to the alternative reflection point is equal to the reflection angle, determining that the alternative reflection point is the reflection point of the projection point on the projection line.

In an optional manner, the method further comprises:

and if the projection line corresponding to the first connecting line does not exist on the image bearing equipment, determining that the reflection point does not exist on the image bearing equipment by the projection point.

using the first eyepoint simulation data and/or the second eyepoint simulation data as the third simulation data; alternatively, the first and second liquid crystal display panels may be,

In an optional manner, the method further comprises:

The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. In addition, embodiments of the present invention are not directed to any particular programming language.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. Similarly, in the above description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. Where the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will appreciate that the modules in the devices in an embodiment may be adaptively changed and arranged in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. Except that at least some of such features and/or processes or elements are mutually exclusive.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specified otherwise.

Claims

1. A method for determining a projection region, the method comprising:

acquiring first simulation data of projection equipment, second simulation data of shadow bearing equipment and third simulation data of eyepoints of a user; wherein the first simulation data comprises simulation point data for a plurality of proxels on the projection device;

2. The method of claim 1, wherein establishing a projection line on the shadow bearing device based on the simulation point data, the second simulation data, and the third simulation data comprises:

3. The method of claim 1, wherein determining a reflection point of the projection point based on the projection line comprises:

4. The method of claim 3, further comprising:

5. The method of claim 2, further comprising:

6. The method of any one of claims 1-5, wherein the user eyepoint comprises a first eyepoint and a second eyepoint, and wherein obtaining third simulated data of the user eyepoint comprises:

7. The method of claim 6, wherein after obtaining the first eyepoint simulation data for the first eyepoint and the second eyepoint simulation data for the second eyepoint, the method comprises:

8. The method of claim 1, further comprising:

and determining whether the arrangement position of the projection equipment is proper or not based on the safe visual field area and the projection area.

9. An apparatus for determining a projection region, the apparatus comprising:

the acquisition module is used for acquiring first analog data of the projection equipment, second analog data of the shadow bearing equipment and third analog data of eyepoints of a user; wherein the first simulation data comprises simulation point data of a plurality of projection points on the projection device;

10. An electronic device, comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface are communicated with each other through the communication bus;

the memory is used for storing at least one executable instruction which causes the processor to execute the operation of the projection area determination method according to any one of claims 1 to 8.