A method for application evaluation of a head-up display device and related apparatus

Abstract

The present disclosure relates to a head-up display device application evaluation method and related equipment, the method comprising: obtaining application data of the head-up display device; determining a mechanical structure parameter set of the head-up display device according to application environment data and display performance index data; determining optical parameters of the head-up display device based on the mechanical structure parameter set and using a mapping relationship; the mapping relationship representing the relationship between the optical parameters and the associated mechanical structure parameters; generating an envelope structure of the head-up display device according to the optical parameters and the mechanical structure parameter set; the envelope structure being used to determine the feasibility of the head-up display device in the application environment. In this way, the envelope structure of the HUD required for application evaluation can be obtained more quickly, which can greatly reduce the workload of the preliminary evaluation project, shorten the cycle of the preliminary evaluation project, and improve the efficiency of the preliminary evaluation project.

Description

Technical Field

[0001] This disclosure relates to the field of head-up display (HUD) technology, and more particularly to an application evaluation method and related equipment for HUDs. Background Technology

[0002] Head-up display (HUD) systems, as a crucial component of human-machine interaction solutions, are essential hardware for the future realization of intelligent and connected vehicles, as well as for human-machine interaction. HUD systems utilize the principle of optical reflection to project information such as navigation, vehicle speed, and fuel pressure onto the windshield, allowing the driver to concentrate on driving and thus improving driving safety. HUDs are visual imaging systems; their effectiveness primarily relies on the driver's subjective vision, and the performance indicators of the head-up display directly impact the user experience.

[0003] Before installing a HUD system in a vehicle, R&D personnel typically need to conduct a project evaluation based on given head-up display performance indicators, mainly focusing on the feasibility of deploying a HUD system in a vehicle.

[0004] Currently, each time a project is evaluated in the early stages, it is necessary to redesign the optical parameters and structure based on the actual project requirements, such as performance indicators, to obtain the HUD envelope structure required for the early evaluation project. This greatly increases the workload of the early evaluation project, resulting in a long cycle and low efficiency, which is not conducive to the rapid delivery of the project or the company's cost reduction and efficiency improvement. Summary of the Invention

[0005] This disclosure provides an application evaluation method and related equipment for a head-up display device. The technical solution of this disclosure is as follows:

[0006] According to a first aspect of the present disclosure, an application evaluation method for a head-up display device is provided, comprising:

[0007] Acquire application data for the head-up display device; the application data includes application environment data and display performance index data of the head-up display device.

[0008] Based on application environment data and display performance index data, determine the set of mechanical structure parameters for the head-up display device;

[0009] Based on a set of mechanical structural parameters, the optical parameters of the head-up display device are determined using mapping relationships. The mapping relationships characterize the relationship between the optical parameters and the associated mechanical structural parameters. The mapping relationships are determined based on historical application data of similar head-up display devices.

[0010] An envelope structure for the head-up display device is generated based on a set of optical and mechanical parameters; the envelope structure is used to determine the feasibility of the head-up display device in the application environment.

[0011] In some possible embodiments, there are multiple optical parameters; the mapping relationship includes the mapping relationship corresponding to each of the multiple optical parameters.

[0012] Based on a set of mechanical structure parameters, the optical parameters of the head-up display device are determined using mapping relationships, including:

[0013] Determine the associated mechanical structure parameters for each optical parameter from the set of mechanical structure parameters;

[0014] Each optical parameter is determined based on its associated mechanical structural parameters and the mapping relationship between each optical parameter.

[0015] In some possible embodiments, the method further includes:

[0016] Obtain historical application data for similar head-up display devices;

[0017] Historical application data is processed to obtain multiple sets of sample data; each set of sample data includes historical optical parameters and historically associated mechanical structural parameters of the historical optical parameters.

[0018] By fitting multiple sets of sample data, the functional relationship between historical optical parameters and historical associated mechanical structure parameters is obtained;

[0019] The functional relationship is defined as a mapping relationship.

[0020] In some possible embodiments, historical application data includes historical application environment data of similar head-up display devices and historical display performance index data of similar head-up display devices;

[0021] The historical application data was processed to obtain multiple sets of sample data, including:

[0022] Incremental processing is performed on historical display performance index data to obtain multiple different historical display performance index data.

[0023] Based on historical application environment data and multiple different historical display performance index data, multiple sets of sample data were determined.

[0024] In some possible embodiments, the functional relationship is determined as a mapping relationship, including:

[0025] Acquire test sample data; the test sample data includes actual optical parameters and parameters of the associated mechanical structure under test;

[0026] The predicted optical parameters are determined based on the functional relationship and the parameters of the mechanical structure to be measured.

[0027] If the error between the predicted optical parameters and the actual optical parameters meets the preset conditions, the functional relationship is determined as a mapping relationship.

[0028] In some possible embodiments, the application environment data includes structural data of the imaging components on the vehicle and installation constraints of the head-up display device in the vehicle; the display performance index data includes at least one of the field of view, downward viewing angle, and virtual image distance; the head-up display device includes at least one image generation unit and at least one curved reflector.

[0029] Based on application environment data and display performance index data, the set of mechanical structure parameters for the head-up display device is determined, including:

[0030] Based on the installation constraints and structural data of the imaging component, as well as at least one of the field of view, downward viewing angle, and virtual image distance, determine at least one of the following: the distance from the eye box to the imaging component, the distance from the imaging component to the curved mirror, the distance from the curved mirror to the image generation unit, the horizontal intercept of the imaging ray on the imaging component, the vertical intercept of the imaging ray on the imaging component, the horizontal intercept of the imaging ray on the curved mirror, and the vertical intercept of the imaging ray on the curved mirror, thereby obtaining a set of mechanical structural parameters.

[0031] In some possible embodiments, the optical parameters include the approximate radius of curvature of the curved mirror; the associated mechanical structural parameter of the approximate radius of curvature of the curved mirror is the distance from the curved mirror to the image generation unit; the mapping relationship corresponding to the approximate radius of curvature of the curved mirror is a linear function relationship between the approximate radius of curvature of the curved mirror and the distance from the curved mirror to the image generation unit;

[0032] Each optical parameter is determined based on its associated mechanical structural parameters and the corresponding mapping relationship, including:

[0033] The approximate radius of curvature of the curved mirror is determined based on the distance from the curved mirror to the image generation unit and the linear function relationship.

[0034] In some possible embodiments, the method further includes:

[0035] The volume of the head-up display device and the interference between the head-up display device and the application environment are determined based on the envelope structure.

[0036] The feasibility of the head-up display device in the application environment is determined based on its size and interference characteristics.

[0037] According to a second aspect of the present disclosure, an application evaluation apparatus for a head-up display device is provided, comprising:

[0038] The acquisition module is used to acquire application data of the head-up display device; the application data includes application environment data and display performance index data of the head-up display device.

[0039] The first determining module is used to determine the set of mechanical structure parameters of the head-up display device based on application environment data and display performance index data;

[0040] The second determining module is used to determine the optical parameters of the head-up display device based on a set of mechanical structure parameters and using a mapping relationship; the mapping relationship characterizes the relationship between the optical parameters and the associated mechanical structure parameters; the mapping relationship is determined based on historical application data of similar head-up display devices.

[0041] The generation module is used to generate the envelope structure of the head-up display device based on a set of optical and mechanical structural parameters; the envelope structure is used to determine the feasibility of the head-up display device in the application environment.

[0042] According to a third aspect of the present disclosure, an electronic device is provided, comprising:

[0043] processor;

[0044] Memory used to store processor-executable instructions;

[0045] The processor is configured to execute instructions to implement the application evaluation method for the head-up display device of the first aspect of the present disclosure.

[0046] According to a fourth aspect of the present disclosure, a computer-readable storage medium is provided, which, when executed by a processor of an electronic device, enables the electronic device to perform the application evaluation method for a head-up display device according to the first aspect of the present disclosure.

[0047] The technical solutions provided by the embodiments of this disclosure have at least the following beneficial effects:

[0048] By acquiring application data of the head-up display (HUD), including application environment data and display performance index data, and determining a set of mechanical structural parameters for the HUD based on these data, and then using a mapping relationship to determine the optical parameters of the HUD based on this set of mechanical structural parameters, this disclosure allows for a more efficient approach. This involves designing the mechanical structure of the HUD based solely on its application data, determining the set of mechanical structural parameters, and then directly determining the optical parameters of the HUD based on the pre-determined mapping relationship between the optical parameters and the associated mechanical structural parameters. This eliminates the need for further optical architecture design, enabling a faster acquisition of the HUD's envelope structure for application evaluation. This significantly reduces the workload and cycle time of preliminary evaluation projects, improves efficiency, facilitates rapid project delivery, and promotes cost reduction and efficiency improvement for enterprises.

[0049] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0050] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure, and are not intended to unduly limit this disclosure.

[0051] Figure 1 This is a schematic diagram illustrating an application environment of a head-up display device according to an exemplary embodiment;

[0052] Figure 2 This is a flowchart illustrating an application evaluation method for a head-up display device according to an exemplary embodiment;

[0053] Figure 3 This is a schematic diagram of the structure of a head-up display device according to an exemplary embodiment;

[0054] Figure 4 This is a flowchart illustrating a method for determining a mapping relationship according to an exemplary embodiment;

[0055] Figure 5 This is a flowchart illustrating the processing of historical application data according to an exemplary embodiment;

[0056] Figure 6This is a flowchart illustrating, according to an exemplary embodiment, a method for determining a functional relationship as a mapping relationship;

[0057] Figure 7 This is a schematic diagram illustrating an envelope structure according to an exemplary embodiment;

[0058] Figure 8 This is a block diagram illustrating an application evaluation apparatus for a head-up display device according to an exemplary embodiment;

[0059] Figure 9 This is a block diagram illustrating an electronic device for application evaluation of a head-up display device according to an exemplary embodiment. Detailed Implementation

[0060] To enable those skilled in the art to better understand the technical solutions of this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0061] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar first objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0062] Before providing a further detailed description of the embodiments of this disclosure, the nouns and terms involved in the embodiments of this disclosure will be explained, and the nouns and terms involved in the embodiments of this disclosure shall be interpreted as follows.

[0063] Eye box: The area of ​​the eyeball distribution that provides a complete image from the driver's side.

[0064] Horizontal field of view (HFOV): For a rectangular virtual image, the angle between the line connecting the midpoint of the left and right vertical sides and the eye point.

[0065] Vertical field of view (VFOV): For a rectangular virtual image, the angle between the line connecting the midpoint of the upper and lower horizontal sides and the eye point.

[0066] Look-down angle (LDA): The angle between the line connecting the center eye point and the center point of the virtual image and the horizontal plane.

[0067] Virtual image distance (VID): The distance from the driver's eye to the projected virtual image.

[0068] Please see Figure 1 , Figure 1 This is a schematic diagram illustrating the application environment of a head-up display (HUD) device provided in this embodiment. The HUD can be used in automobiles as a driving assistance instrument. The HUD can project vehicle speed, navigation information, warning information, etc., in the form of images and characters into front of the driver through optical components, forming a virtual image in front of the driver's line of sight.

[0069] Before installing a HUD system in a vehicle, R&D personnel typically need to conduct a project evaluation based on given head-up display performance indicators, mainly focusing on the feasibility of deploying a HUD system in a vehicle.

[0070] Currently, the preliminary evaluation work is quite complicated. It requires redesigning the optical parameters based on the actual project needs, such as performance indicators, to obtain the HUD envelope structure required for the preliminary evaluation project. This results in a long evaluation cycle and low efficiency, which is not conducive to the rapid delivery of the project or the cost reduction and efficiency improvement of enterprises.

[0071] Based on this, the present disclosure provides an application evaluation method for head-up display devices, which analyzes the feasibility of HUD deployment in specific application environments. This method can greatly reduce the workload of preliminary evaluation projects, shorten the cycle of preliminary evaluation projects, improve the efficiency of preliminary evaluation projects, facilitate the rapid delivery of projects, and also help enterprises reduce costs and increase efficiency.

[0072] The following describes a specific embodiment of an application evaluation method for a head-up display device provided in this disclosure. This method can be implemented by a terminal device or a server alone, or by a combination of a terminal device and a server. Figure 2 This is a flowchart illustrating an application evaluation method for a head-up display device according to an exemplary embodiment, such as... Figure 2 As shown, the application evaluation method for head-up display devices may include the following steps:

[0073] S201: Obtain application data of the head-up display device; the application data includes application environment data of the head-up display device and display performance index data of the head-up display device.

[0074] In this embodiment of the disclosure, application data of the head-up display device (hereinafter referred to as HUD) is first acquired. This application data is typically provided by the application side, such as... Figure 1As shown, HUD can be applied to vehicles, where the application end is the car manufacturer and the application environment is the car; in addition, HUD can also be applied to other vehicles such as airplanes. This disclosure does not limit the application environment of HUD.

[0075] Application data includes HUD application environment data and display performance index data, which are related to the actual application environment. Generally, the application environment of HUD is a vehicle, so the application environment data can include the structural data of the imaging component on the vehicle and the installation constraints of HUD in the vehicle. The display performance index data can include at least one of the field of view (FOV), lower angle of view (LDA), and virtual image distance (VID); where the field of view includes the horizontal field of view and the vertical field of view. In actual business scenarios, the vehicle can be a vehicle, so the imaging component can be the windshield. The corresponding application environment data can include the structural data of the windshield, the vehicle body environment data, and the spatial constraints on the installation position of HUD in the vehicle, such as the limiting surface of HUD (to limit the HUD height from exceeding a certain surface of the vehicle body), which needs to be determined according to the actual vehicle model. The display performance index data includes a set of standard values ​​for FOV, LDA, and VID.

[0076] S203: Determine the set of mechanical structure parameters for the head-up display device based on application environment data and display performance index data.

[0077] In this embodiment of the disclosure, after obtaining the application environment data and display performance index data of the HUD provided by the application terminal, it is necessary to perform mechanical structure design of the HUD to determine the structure of the HUD suitable for the actual application environment. That is, the set of mechanical structure parameters of the HUD is determined based on the application environment data and display performance index data of the HUD. Specifically, the R&D personnel can use the corresponding HUD mechanical structure design tools to determine the set of mechanical structure parameters of the HUD based on the application environment data and display performance index data of the HUD; alternatively, the server can automatically perform modeling based on the application environment data and display performance index data to obtain the set of mechanical structure parameters of the HUD.

[0078] The set of mechanical structural parameters includes the structural parameters of each imaging device constituting the HUD and the relative positional parameters between the imaging devices. Typically, the imaging device of a HUD includes at least one image generation unit and at least one curved mirror; the image generation unit generates an image, and the curved mirror reflects the generated image to the imaging component, where it is then reflected to form a virtual image. The more complex the HUD structure and the more imaging devices it contains, the more parameters are included in the set of mechanical structural parameters.

[0079] In some possible embodiments, such as Figure 3 As shown, Figure 3 The image shows a simple structure of a HUD and its application in vehicles. Figure 3 The HUD is installed below the windshield and includes an image generation unit 301, a plane mirror 302, and a curved mirror 303. In actual driving scenarios, the image generated by the image generation unit 301, which contains information such as vehicle speed, navigation information, and warning information, is reflected in sequence by the plane mirror 302 and the curved mirror 303 to form a virtual image in front of the windshield. The driver can see the virtual image from the eye box position and understand information such as vehicle speed, navigation information, and warning information.

[0080] The following is combined Figure 3 The structure of the HUD shown will be further described in a specific embodiment of step S203.

[0081] In some possible embodiments, determining the set of mechanical structure parameters of the head-up display device based on application environment data and display performance index data may include the following steps:

[0082] Based on the installation constraints of the HUD in the vehicle and the structural data of the imaging component on the vehicle, as well as at least one of the field of view, downward viewing angle, and virtual image distance, the following parameters are determined: the distance from the eye box to the imaging component (i.e., the windshield), the distance from the imaging component to the curved reflector 303, the distance from the curved reflector 303 to the image generation unit 301 (specifically, the liquid crystal display screen in the image generation unit 301), the horizontal intercept of the imaging ray emitted by the image generation unit 301 on the imaging component, the vertical intercept of the imaging ray on the imaging component, the horizontal intercept of the imaging ray on the curved reflector 303, the vertical intercept of the imaging ray on the curved reflector 303, the curvature of the imaging component, and the size of the curved reflector, thus obtaining a set of mechanical structural parameters.

[0083] In a specific example, under the performance indicators of a standard horizontal field of view of -9°, a standard vertical field of view of -3°, and a standard virtual image distance of -7500mm, combined with specific installation constraints and the structural parameters of the windshield, the determined set of mechanical structural parameters for the HUD includes: a distance of -911mm from the eye box to the windshield, a distance of -330mm from the windshield to the curved reflector 303, a distance of -310mm from the curved reflector 303 to the LCD screen, a horizontal intercept of the imaging ray on the windshield of -243mm, a vertical intercept of the imaging ray on the windshield of -92mm, a horizontal intercept of the imaging ray on the curved reflector 303 of -269mm, and a vertical intercept of the imaging ray on the curved reflector 303 of -86mm.

[0084] S205: Based on the set of mechanical structure parameters, the optical parameters of the head-up display device are determined using mapping relationships; the mapping relationship characterizes the relationship between the optical parameters and the associated mechanical structure parameters; the mapping relationship is determined based on historical application data of similar head-up display devices.

[0085] In the application evaluation of HUDs, it is necessary not only to design the mechanical structure of the HUD based on application environment data and display performance index data to obtain the set of mechanical structure parameters of the HUD, but also to redesign the optical architecture of the HUD based on application environment data and display performance index data to determine the optical parameters of the HUD. This results in long evaluation cycles and low efficiency each time.

[0086] Considering that in real-world business scenarios, HUD suppliers often receive preliminary evaluation projects involving the installation of similar HUDs in the same vehicle model, these projects may have some differences in display performance indicators, but the final optical architecture is essentially the same. Therefore, in this embodiment, the mapping relationship between optical parameters and associated mechanical structure parameters is determined in advance based on historical application data of similar HUDs. Thus, during subsequent application evaluation of the HUD, the optical parameters of the HUD can be quickly determined directly using the mapping relationship based on the determined set of mechanical structure parameters. This saves the step of redesigning the optical system and reduces the problems of long evaluation cycles and low efficiency caused by repetitive work.

[0087] In some possible embodiments, the optical architecture design of the HUD involves multiple optical parameters, including but not limited to the approximate radius of curvature of the curved mirror, the optical path of the HUD, and the effective display area size of the liquid crystal display screen; wherein the effective display area of ​​the liquid crystal display screen is the area on the liquid crystal display screen used to emit imaging light; correspondingly, the above mapping relationship includes the mapping relationship corresponding to each of the multiple optical parameters, that is, each optical parameter has its own mapping relationship with its corresponding associated mechanical structure parameter;

[0088] Therefore, the process of determining the optical parameters of the head-up display device based on the set of mechanical structure parameters and using the mapping relationship in S205 can specifically include the following steps: First, determine the associated mechanical structure parameter of each optical parameter from the set of mechanical structure parameters; second, determine each optical parameter according to the associated mechanical structure parameter of each optical parameter and the mapping relationship corresponding to each optical parameter.

[0089] In detail, for each optical parameter, since the set of mechanical structure parameters includes the mechanical structure parameters of each imaging device in the HUD, it is necessary to first determine the associated mechanical structure parameters of the optical parameter from the set of mechanical structure parameters. Specifically, the mapping relationship of the optical parameter can be directly obtained, and the associated mechanical structure parameters of the optical parameter can be matched from the set of mechanical structure parameters according to the mapping relationship. Then, the corresponding calculation is performed to obtain the optical parameter. Alternatively, considering that for the same optical parameter, it is necessary to match the associated mechanical structure parameters from the set of mechanical structure parameters according to the mapping relationship again during each evaluation, in order to save this repetitive step, a parameter association table between the optical parameter and the associated mechanical structure parameters can be established. Thus, during each evaluation, the associated mechanical structure parameters of the optical parameter can be obtained directly by looking up the table, and then the corresponding mapping relationship of the optical parameter can be obtained, and the corresponding calculation is performed to obtain the optical parameter.

[0090] The following describes an embodiment of how to determine the mapping relationship. In some possible embodiments, the application evaluation method of this disclosure may further include, for example... Figure 4 The following steps are shown:

[0091] S401: Obtain historical application data of similar head-up display devices.

[0092] In this step, historical application data for similar head-up display devices refers to application data received from the application side during past application evaluations of similar head-up display devices. Historical application data includes historical application environment data and historical display performance index data for similar head-up display devices. Specifically, "similar head-up display devices" refers to head-up display devices where the number of image generating units and the number of curved reflectors are the same; the type of image generating unit (LCD, LCOS, LBS, DLP) and other imaging devices are not specified.

[0093] S403: Process historical application data to obtain multiple sets of sample data.

[0094] Each set of sample data includes historical optical parameters and their historical associated mechanical structural parameters. It should be noted that the historical optical parameters in different sets of sample data are the same.

[0095] In a specific example, step S403 processes historical application data to obtain multiple sets of sample data, which may include, for example: Figure 5 The following steps are shown:

[0096] S501: Perform incremental data processing on historical display performance index data to obtain multiple different historical display performance index data.

[0097] Typically, for a project of the same type, historical display performance index data only contains one set of standard values ​​for FOV, LDA, and VID. To improve the accuracy of the final fitted mapping relationship, it is necessary to increase the number of samples. Therefore, in this step, the historical display performance index data is processed incrementally. Specifically, based on the given standard values ​​of FOV, LDA, and VID, values ​​near the standard values ​​are taken to obtain multiple sets of different FOV, LDA, and VID.

[0098] S503: Based on historical application environment data and multiple different historical display performance index data, determine multiple sets of sample data.

[0099] In this step, mechanical and optical architecture designs are performed based on historical application environment data and multiple historical display performance index data, resulting in sets of historical optical and mechanical structural parameters under different historical display performance index data. Then, based on experience, these sets of historical mechanical structural parameters under different historical display performance index data are filtered to obtain historical mechanical structural parameters associated with the historical optical parameters, which are then used as historical associated mechanical structural parameters. Finally, using the historical optical and associated mechanical structural parameters under the same historical display performance index data as a set of sample data, multiple sets of sample data are obtained. For example, for multiple different sets of FOV, LDA, and VID, sample data corresponding to each set of FOV, LDA, and VID is determined based on historical application environment data.

[0100] In other embodiments, if multiple application evaluations have been conducted for the same type of head-up display device in the past, the historical optical parameters and historical associated mechanical structure parameters obtained in each application evaluation process can be directly used as a set of sample data, without having to perform step S403 again.

[0101] S405: Fit multiple sets of sample data to obtain the functional relationship between historical optical parameters and historical associated mechanical structure parameters.

[0102] S407: Determine the functional relationship as a mapping relationship.

[0103] In steps S405 to S407 above, historical optical parameters are used as dependent variables and historical associated mechanical structure parameters are used as independent variables to fit multiple sets of sample data. Specifically, a linear function, quadratic function, hyperbola, or other objective function can be used for fitting to obtain the functional relationship between historical optical parameters and historical associated mechanical structure parameters. Finally, the fitted functional relationship can be used as the mapping relationship corresponding to the optical parameter.

[0104] For example, in determining the mapping relationship of the optical parameter of the approximate radius of curvature of a curved mirror, the associated mechanical structural parameter of the approximate radius of curvature of the curved mirror is first determined to be the distance from the curved mirror to the image generation unit. Then, multiple sets of sample data are acquired, each set including the approximate radius of curvature of the curved mirror and the distance from the curved mirror to the image generation unit. The values ​​of the approximate radius of curvature of the curved mirror and the distance from the curved mirror to the image generation unit are different in different sets. Using a linear function as the objective function, the multiple sets of sample data are fitted, and finally, a linear function relationship between the approximate radius of curvature of the curved mirror and the distance from the curved mirror to the image generation unit can be fitted, which serves as the mapping relationship corresponding to the approximate radius of curvature of the curved mirror.

[0105] Thus, in subsequent application evaluation, when determining the approximate radius of curvature of the curved mirror, it can be quickly determined directly based on the distance from the curved mirror to the image generation unit and a linear function relationship. Corresponding to the above embodiment, when the distance from the curved mirror to the image generation unit is -310mm, based on the fitted linear function relationship between the approximate radius of curvature of the curved mirror and the distance from the curved mirror to the image generation unit, the approximate radius of curvature of the curved mirror can be determined to be -620mm.

[0106] In a further possible embodiment, determining the functional relationship as a mapping relationship may specifically include, for example: Figure 6 The following steps are shown:

[0107] S601: Obtain test sample data.

[0108] In this step, test sample data is acquired to verify the fitted functional relationship. The test sample data includes actual optical parameters and parameters of the associated mechanical structure to be tested. The actual optical parameters can be obtained from the actual optical architecture design, and the parameters of the associated mechanical structure to be tested are obtained from the actual mechanical structure design.

[0109] S603: Determine the predicted optical parameters based on the functional relationship and the parameters of the mechanical structure to be measured.

[0110] In this step, the parameters of the mechanical structure to be tested are substituted into the functional relationship to calculate the theoretical results, which are then used as the predicted optical parameters.

[0111] S605: If the error between the predicted optical parameters and the actual optical parameters meets the preset conditions, the functional relationship is determined as a mapping relationship.

[0112] In this step, the predicted optical parameters calculated using the functional relationship are compared with the actual optical parameters to determine the error between the predicted and actual optical parameters. If the error meets the preset condition, the functional relationship is determined as a mapping relationship. Otherwise, the functional relationship is optimized until the optimized functional relationship meets the preset condition. The preset condition can be that the error is less than or equal to the maximum permissible error. For example, the maximum permissible error can be 5%.

[0113] In the above embodiments, the fitted functional relationship is verified, and optimization is performed if the verification fails. This ensures the accuracy of the mapping relationship between optical parameters and associated mechanical structure parameters, thereby improving the accuracy of the final application evaluation.

[0114] S207: Generate the envelope structure of the head-up display device based on the set of optical and mechanical parameters; the envelope structure is used to determine the feasibility of the head-up display device in the application environment.

[0115] In this embodiment of the disclosure, after determining the set of optical parameters and mechanical structure parameters of the HUD, the envelope structure of the HUD is generated using the set of optical parameters and mechanical structure parameters. Here, the envelope structure refers to a simple structure that can wrap the imaging light rays and imaging devices of the HUD. Figure 3 The envelope structure corresponding to the HUD can be as follows: Figure 7 As shown.

[0116] Subsequently, the feasibility of the HUD in the application environment can be further determined based on the envelope structure. Accordingly, after step S207, the application evaluation method of this embodiment may further include the following steps: determining the volume of the head-up display device and the interference between the head-up display device and the application environment based on the envelope structure, and then determining the feasibility of the head-up display device in the application environment based on the volume and the interference.

[0117] Specifically, interference can refer to whether there is structural interference between the HUD and the vehicle, and whether the imaging light of the HUD is interfered with by the structure of the vehicle. When the interference indicates that there is no interference or interference, and the volume of the HUD meets the assembly space of the vehicle, it is determined that the application of the HUD in the vehicle is feasible. In actual business scenarios, the feasibility conclusion of the HUD can be given by manual judgment, or the server can automatically determine it according to the above steps.

[0118] In summary, the embodiments of this disclosure provide an application evaluation method for a head-up display (HUD). Based solely on the application data of the HUD, the mechanical structure design of the HUD is performed to determine the set of mechanical structure parameters. Then, based on the pre-determined mapping relationship between the optical parameters and the associated mechanical structure parameters, the optical parameters of the HUD are directly determined, eliminating the need for further optical architecture design. This allows for a faster acquisition of the HUD's envelope structure required for application evaluation, significantly reducing the workload and shortening the evaluation cycle of preliminary projects. It also improves the efficiency of preliminary evaluation projects, facilitating rapid project delivery and cost reduction and efficiency improvement for enterprises.

[0119] Figure 8 This is a block diagram illustrating an application evaluation apparatus for a head-up display device according to an exemplary embodiment. (Refer to...) Figure 8 The device includes an acquisition module 801, a first determination module 802, a second determination module 803, and a generation module 804.

[0120] The acquisition module 801 is used to acquire application data of the head-up display device; the application data includes application environment data of the head-up display device and display performance index data of the head-up display device.

[0121] The first determining module 802 is used to determine the set of mechanical structure parameters of the head-up display device based on application environment data and display performance index data.

[0122] The second determining module 803 is used to determine the optical parameters of the head-up display device based on a set of mechanical structure parameters and using a mapping relationship; the mapping relationship characterizes the relationship between the optical parameters and the associated mechanical structure parameters; the mapping relationship is determined based on historical application data of similar head-up display devices.

[0123] The generation module 804 is used to generate the envelope structure of the head-up display device based on the set of optical parameters and mechanical structure parameters; the envelope structure is used to determine the feasibility of the head-up display device in the application environment.

[0124] In some possible embodiments, there are multiple optical parameters; the mapping relationship includes the mapping relationship corresponding to each of the multiple optical parameters.

[0125] The second determining module 803 is further configured to determine the associated mechanical structure parameter of each optical parameter from the set of mechanical structure parameters; and to determine each optical parameter according to the associated mechanical structure parameter of each optical parameter and the mapping relationship corresponding to each optical parameter.

[0126] In some possible embodiments, the apparatus further includes a third determining module;

[0127] The third determination module is used to acquire historical application data of similar head-up display devices; process the historical application data to obtain multiple sets of sample data; each set of sample data includes historical optical parameters and historically associated mechanical structure parameters of the historical optical parameters; perform fitting processing on the multiple sets of sample data to obtain the functional relationship between the historical optical parameters and the historically associated mechanical structure parameters; and determine the functional relationship as a mapping relationship.

[0128] In some possible embodiments, historical application data includes historical application environment data of similar head-up display devices and historical display performance index data of similar head-up display devices;

[0129] The third determination module is also used to perform incremental data processing on historical display performance index data to obtain multiple different historical display performance index data; and to determine multiple sets of sample data based on historical application environment data and multiple different historical display performance index data.

[0130] In some possible embodiments, the third determining module is further configured to acquire test sample data; the test sample data includes actual optical parameters and parameters of the associated mechanical structure to be tested; the predicted optical parameters are determined based on the functional relationship and the parameters of the associated mechanical structure to be tested; if the error between the predicted optical parameters and the actual optical parameters meets a preset condition, the functional relationship is determined as a mapping relationship.

[0131] In some possible embodiments, the application environment data includes structural data of the imaging components on the vehicle and installation constraints of the head-up display device in the vehicle; the display performance index data includes at least one of the field of view, downward viewing angle, and virtual image distance; the head-up display device includes at least one image generation unit and at least one curved reflector.

[0132] The first determining module 802 is further configured to determine, based on installation constraints and structural data of the imaging component, and at least one of the field of view, downward viewing angle, and virtual image distance, at least one of the following: the distance from the eye box to the imaging component, the distance from the imaging component to the curved mirror, the distance from the curved mirror to the image generation unit, the horizontal intercept of the imaging ray on the imaging component, the vertical intercept of the imaging ray on the imaging component, the horizontal intercept of the imaging ray on the curved mirror, and the vertical intercept of the imaging ray on the curved mirror, thereby obtaining a set of mechanical structural parameters.

[0133] In some possible embodiments, the optical parameters include the approximate radius of curvature of the curved mirror; the associated mechanical structural parameter of the approximate radius of curvature of the curved mirror is the distance from the curved mirror to the image generation unit; the mapping relationship corresponding to the approximate radius of curvature of the curved mirror is a linear function relationship between the approximate radius of curvature of the curved mirror and the distance from the curved mirror to the image generation unit;

[0134] The second determining module 803 is also used to determine the approximate radius of curvature of the curved mirror based on the distance from the curved mirror to the image generation unit and the linear function relationship.

[0135] In some possible embodiments, the apparatus further includes a fourth determining module;

[0136] The fourth determination module is used to determine the volume of the head-up display device and the interference between the head-up display device and the application environment based on the envelope structure; and to determine the feasibility of the head-up display device in the application environment based on the volume and interference.

[0137] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0138] Figure 9 This is a block diagram illustrating an electronic device for application evaluation of a head-up display device according to an exemplary embodiment. The electronic device may be a terminal, and its internal structure diagram may be as follows: Figure 9 As shown, the electronic device includes a processor, memory, network interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage medium. The network interface is used to communicate with external terminals via a network connection. When the computer program is executed by the processor, it implements an application evaluation method for a head-up display device. The display screen can be a liquid crystal display (LCD) or an e-ink display. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the device's casing, or an external keyboard, touchpad, or mouse.

[0139] Those skilled in the art will understand that Figure 9 The structure shown is merely a block diagram of a portion of the structure related to the present disclosure and does not constitute a limitation on the electronic device to which the present disclosure is applied. A specific electronic device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0140] In an exemplary embodiment, an electronic device is also provided, including: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to execute the instructions to implement an application evaluation method for a head-up display device as described in the embodiments of this disclosure.

[0141] In an exemplary embodiment, a computer-readable storage medium is also provided, wherein when the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to perform the application evaluation method for the head-up display device in the embodiments of this disclosure.

[0142] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0143] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0144] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An application evaluation method for a head-up display device, characterized in that, include: Acquire application data of the head-up display device; the application data includes application environment data of the head-up display device and display performance index data of the head-up display device; Based on the application environment data and the display performance index data, determine the set of mechanical structure parameters of the head-up display device; Based on the set of mechanical structural parameters, the optical parameters of the head-up display device are determined using a mapping relationship; the mapping relationship characterizes the relationship between the optical parameters and the associated mechanical structural parameters. The mapping relationship is determined based on historical application data of similar head-up display devices. The head-up display device's envelope structure is generated based on the optical parameters and the set of mechanical structural parameters; the envelope structure is used to determine the feasibility of the head-up display device in the application environment. The application environment data includes structural data of the imaging components on the vehicle and installation restrictions of the head-up display device in the vehicle; the display performance index data includes at least one of the field of view, downward viewing angle, and virtual image distance; the head-up display device includes at least one image generation unit and at least one curved reflector. The step of determining the set of mechanical structure parameters of the head-up display device based on the application environment data and the display performance index data includes: determining at least one of the following based on the installation constraints, the structural data of the imaging component, and at least one of the field of view, the downward viewing angle, and the virtual image distance: the distance from the eye box to the imaging component, the distance from the imaging component to the curved mirror, the distance from the curved mirror to the image generation unit, the horizontal intercept of the imaging ray on the imaging component, the vertical intercept of the imaging ray on the imaging component, the horizontal intercept of the imaging ray on the curved mirror, the vertical intercept of the imaging ray on the curved mirror, the curvature of the imaging component, and the size of the curved mirror, to obtain the set of mechanical structure parameters.

2. The application evaluation method for the head-up display device according to claim 1, characterized in that, The number of optical parameters is multiple; the mapping relationship includes the mapping relationship corresponding to each of the multiple optical parameters. The step of determining the optical parameters of the head-up display device based on the set of mechanical structure parameters and using mapping relationships includes: The associated mechanical structure parameters for each optical parameter are determined from the set of mechanical structure parameters; Each optical parameter is determined based on its associated mechanical structural parameters and the mapping relationship between each optical parameter.

3. The application evaluation method for the head-up display device according to claim 1 or 2, characterized in that, The method further includes: Obtain historical application data of the same type of head-up display device; The historical application data is processed to obtain multiple sets of sample data; each set of sample data includes historical optical parameters and historical associated mechanical structure parameters of the historical optical parameters. By fitting multiple sets of sample data, the functional relationship between the historical optical parameters and the historical associated mechanical structure parameters is obtained. The functional relationship is determined as the mapping relationship.

4. The application evaluation method for the head-up display device according to claim 3, characterized in that, The historical application data includes historical application environment data of the same type of head-up display device and historical display performance index data of the same type of head-up display device; The historical application data is processed to obtain multiple sets of sample data, including: Incremental processing is performed on the historical display performance index data to obtain multiple different historical display performance index data. Based on the historical application environment data and the multiple different historical display performance index data, the multiple sets of sample data are determined.

5. The application evaluation method for the head-up display device according to claim 3, characterized in that, Determining the functional relationship as the mapping relationship includes: Acquire test sample data; the test sample data includes actual optical parameters and parameters of the associated mechanical structure to be tested. Based on the functional relationship and the parameters of the mechanical structure to be measured, the predicted optical parameters are determined; If the error between the predicted optical parameters and the actual optical parameters meets a preset condition, the functional relationship is determined as the mapping relationship.

6. The application evaluation method for the head-up display device according to claim 2, characterized in that, The optical parameters include the approximate radius of curvature of the curved mirror; the associated mechanical structural parameter of the approximate radius of curvature of the curved mirror is the distance from the curved mirror to the image generation unit; the mapping relationship corresponding to the approximate radius of curvature of the curved mirror is a linear function relationship between the approximate radius of curvature of the curved mirror and the distance from the curved mirror to the image generation unit. The step of determining each optical parameter based on the associated mechanical structure parameter and the mapping relationship corresponding to each optical parameter includes: The approximate radius of curvature of the curved mirror is determined based on the distance from the curved mirror to the image generation unit and the linear function relationship.

7. The application evaluation method for the head-up display device according to claim 1, characterized in that, The method further includes: The volume of the head-up display device and the interference between the head-up display device and the application environment are determined based on the envelope structure. The feasibility of the head-up display device in the application environment is determined based on the volume and the interference situation.

8. An application evaluation device for a head-up display device, characterized in that, include: The acquisition module is used to acquire application data of the head-up display device; the application data includes application environment data of the head-up display device and display performance index data of the head-up display device; The first determining module is used to determine the set of mechanical structure parameters of the head-up display device based on the application environment data and the display performance index data. The second determining module is used to determine the optical parameters of the head-up display device based on the set of mechanical structure parameters and using a mapping relationship; the mapping relationship characterizes the relationship between the optical parameters and the associated mechanical structure parameters. The mapping relationship is determined based on historical application data of similar head-up display devices. A generation module is used to generate an envelope structure of the head-up display device based on the optical parameters and the set of mechanical structure parameters; the envelope structure is used to determine the feasibility of the head-up display device in the application environment; The application environment data includes structural data of the imaging components on the vehicle and installation restrictions of the head-up display device in the vehicle; the display performance index data includes at least one of the field of view, downward viewing angle, and virtual image distance; the head-up display device includes at least one image generation unit and at least one curved reflector. The step of determining the set of mechanical structure parameters of the head-up display device based on the application environment data and the display performance index data includes: determining at least one of the following based on the installation constraints, the structural data of the imaging component, and at least one of the field of view, the downward viewing angle, and the virtual image distance: the distance from the eye box to the imaging component, the distance from the imaging component to the curved mirror, the distance from the curved mirror to the image generation unit, the horizontal intercept of the imaging ray on the imaging component, the vertical intercept of the imaging ray on the imaging component, the horizontal intercept of the imaging ray on the curved mirror, the vertical intercept of the imaging ray on the curved mirror, the curvature of the imaging component, and the size of the curved mirror, to obtain the set of mechanical structure parameters.

9. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute the instructions to implement the application evaluation method for the head-up display device as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, When the instructions in the computer-readable storage medium are executed by the processor of the electronic device, the electronic device is able to perform the application evaluation method for the head-up display device as described in any one of claims 1-7.

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