CN111651053A - Urban sand table display method and device, electronic equipment and storage medium - Google Patents
Urban sand table display method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The disclosure provides a display method and device of an urban sand table, electronic equipment and a storage medium, wherein the display method comprises the following steps: responding to gesture trigger operation of a user, and determining city sand table data in an AR scene and a display mode of the city sand table data based on a pre-constructed city sand table model of a target city; wherein the urban sand table data belongs to part or all of the data of the urban sand table model; the method comprises the steps of acquiring pose data of AR equipment in a target exhibition hall in real time, and controlling the AR equipment to display the city sand table data according to the display mode based on the pose data of the AR equipment, the determined city sand table data in the AR scene and the display mode of the city sand table data.
Description
Technical Field
The disclosure relates to the technical field of augmented reality, in particular to a display method and device of an urban sand table, electronic equipment and a storage medium.
Background
The sand table is a model which is built by silt and other materials according to a certain proportion according to a topographic map, an aerial photo or a field topography, and has been applied to various fields in recent years, such as city planning, building exhibition, scenic spot introduction and the like, and accordingly the sand table is present in various places, taking an exhibition hall as an example, a cultural exhibition hall is usually set in each city, and the sand table in the city can be exhibited in the exhibition hall. But for such sand tables to occupy a certain amount of use space in the exhibition hall.
Along with the rapid development of artificial intelligence, in order to achieve a better display effect and attract more users, the display method can apply the technologies such as virtual reality and augmented reality to exhibition halls, and when the display method is applied, how to improve the display effect of the sand table based on the technologies and how to save the use space is a problem worthy of research.
Disclosure of Invention
The embodiment of the disclosure at least provides a display scheme of an urban sand table.
In a first aspect, an embodiment of the present disclosure provides a method for displaying an urban sand table, including:
responding to gesture trigger operation of a user, and determining city sand table data in an AR scene and a display mode of the city sand table data based on a pre-constructed city sand table model of a target city; wherein the urban sand table data belongs to part or all of the data of the urban sand table model;
the method comprises the steps of acquiring pose data of AR equipment in a target exhibition hall in real time, and controlling the AR equipment to display the city sand table data according to the display mode based on the pose data of the AR equipment, the determined city sand table data in the AR scene and the display mode of the city sand table data.
In the embodiment of the disclosure, the city sand table is displayed based on the AR technology, so that the space can be effectively saved, and the space utilization rate is improved.
In one possible implementation, the acquiring pose data of the AR device in the target exhibition hall in real time includes:
acquiring a real scene image of a target exhibition hall shot by the AR equipment in real time;
and determining the pose data of the AR equipment in the target exhibition hall based on the real scene image and a pre-constructed three-dimensional scene model representing the target exhibition hall.
In a possible implementation manner, the city sand table data comprises the display states of all characteristic points in the city sand table at multiple moments;
the controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene and the display mode of the city sand table data comprises:
determining display state change data of each feature point in the urban sand table in a preset time length in the display mode based on the urban sand table data and the display mode;
and controlling the AR equipment to display the special presentation effect of the urban sand table merged into the real scene in the preset time length based on the pose data of the AR equipment and the display state change data.
The embodiment of the disclosure provides that the operation can be triggered according to the gesture of the user, the whole city sand table in the city sand table model is gradually displayed, and the interactivity when the city sand table is displayed in an AR scene is improved.
In a possible implementation manner, the city sand table data comprises size data corresponding to the city sand table at a plurality of moments;
the controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene and the display mode of the city sand table data comprises:
determining size change data of the urban sand table within preset time length in the display mode based on the urban sand table data and the display mode;
and controlling the AR equipment to display the special presentation effect of the urban sand table merged into the real scene within the preset time length based on the pose data and the size change data of the AR equipment.
In one possible implementation, the city sand table data further comprises information of a virtual tag matched with the city sand table;
the controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene and the display mode of the city sand table data comprises:
determining presentation data and a presentation mode of a virtual label matched with the city sand table in the presentation mode based on the city sand table data and the presentation mode;
and controlling the AR equipment to display the rendering special effects of the urban sand table merged into the real scene and the corresponding virtual label based on the rendering size and the rendering mode of the AR equipment and the virtual label.
In the embodiment of the disclosure, the virtual tag introducing the city sand table can be displayed in the AR scene, so that the AR scene is more vivid and lively when the city sand table is displayed.
In a possible implementation manner, before controlling the AR device to display the city sand table data according to the display manner based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display manner of the city sand table data, the display method further includes:
determining the display position of the urban sand table data in the target exhibition hall based on the mapping relation between the urban sand table data and a preset display position;
controlling the AR device to display the urban sand table data according to the display mode, comprising:
and controlling the AR equipment to display the urban sand table data merged into the display position according to the display mode.
In the embodiment of the disclosure, the virtual city sand table to be displayed can be combined with the real object in the target exhibition hall, so that the display effect is increased, and the display content of the augmented reality is more vivid.
In one possible implementation, a city sand table model characterizing a target city is pre-constructed in the following manner:
acquiring a plurality of city scene images of the target city;
generating an initial city sand table model corresponding to the target city based on the plurality of city scene images;
and adjusting the initial city sand table model based on the real two-dimensional map corresponding to the target city to obtain an adjusted city sand table model.
In a possible implementation, the generating an initial city sand table model corresponding to the target city based on the plurality of city scene images includes:
extracting a plurality of characteristic points from each acquired urban scene image;
generating the initial city sand table model based on the extracted multiple feature points and a pre-stored three-dimensional sample graph matched with the target city; and the three-dimensional sample graph is a pre-stored three-dimensional graph representing the topographic features of the target city.
In a second aspect, an embodiment of the present disclosure provides a display device for an urban sand table, including:
the determining module is used for responding to gesture triggering operation of a user and determining city sand table data in the AR scene and a display mode of the city sand table data based on a pre-constructed city sand table model of the target city; wherein the urban sand table data belongs to part or all of the data of the urban sand table model;
the control module is used for acquiring pose data of the AR equipment in a target exhibition hall in real time, and controlling the AR equipment to display the city sand table data according to the display mode based on the pose data of the AR equipment, the determined city sand table data in the AR scene and the display mode of the city sand table data.
In one possible embodiment, the control module, when being used for acquiring pose data of the AR device in the target exhibition hall in real time, comprises:
acquiring a real scene image of a target exhibition hall shot by the AR equipment in real time;
and determining the pose data of the AR equipment in the target exhibition hall based on the real scene image and a pre-constructed three-dimensional scene model representing the target exhibition hall.
In a possible implementation manner, the city sand table data comprises the display states of all characteristic points in the city sand table at multiple moments;
the control module, when being used for controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene and the display mode of the city sand table data, comprises:
determining display state change data of each feature point in the urban sand table in a preset time length in the display mode based on the urban sand table data and the display mode;
and controlling the AR equipment to display the special presentation effect of the urban sand table merged into the real scene in the preset time length based on the pose data of the AR equipment and the display state change data.
In a possible implementation manner, the city sand table data comprises size data corresponding to the city sand table at a plurality of moments;
the control module, when being used for controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene and the display mode of the city sand table data, comprises:
determining size change data of the urban sand table within preset time length in the display mode based on the urban sand table data and the display mode;
and controlling the AR equipment to display the special presentation effect of the urban sand table merged into the real scene within the preset time length based on the pose data and the size change data of the AR equipment.
In one possible implementation, the city sand table data further comprises information of a virtual tag matched with the city sand table;
the control module, when being used for controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene and the display mode of the city sand table data, comprises:
determining the presentation size and the presentation mode of the virtual label matched with the urban sand table in the presentation mode based on the urban sand table data and the presentation mode;
and controlling the AR equipment to display the rendering special effects of the urban sand table merged into the real scene and the corresponding virtual label based on the rendering size and the rendering mode of the AR equipment and the virtual label.
In a possible implementation manner, before controlling the AR device to display the city sand table data according to the display manner based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display manner of the city sand table data, the control module is further configured to:
determining the display position of the urban sand table data in the target exhibition hall based on the mapping relation between the urban sand table data and a preset display position;
when the control module is used for controlling the AR equipment to display the urban sand table data according to the display mode, the control module comprises:
and controlling the AR equipment to display the urban sand table data merged into the display position according to the display mode.
In a possible implementation manner, the display apparatus further includes a model construction module, and the model construction module is used for constructing a city sand table model representing a target city in advance according to the following modes:
acquiring a plurality of city scene images of the target city;
generating an initial city sand table model corresponding to the target city based on the plurality of city scene images;
and adjusting the initial city sand table model based on the real two-dimensional map corresponding to the target city to obtain an adjusted city sand table model.
In a possible implementation, the model building module, when configured to generate an initial city sand table model corresponding to the target city based on the plurality of city scene images, includes:
extracting a plurality of characteristic points from each acquired urban scene image;
generating the initial city sand table model based on the extracted multiple feature points and a pre-stored three-dimensional sample graph matched with the target city; and the three-dimensional sample graph is a pre-stored three-dimensional graph representing the topographic features of the target city.
In a third aspect, an embodiment of the present disclosure provides an electronic device, including: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating via the bus when the electronic device is running, the machine-readable instructions when executed by the processor performing the steps of the method of presentation according to the first aspect.
In a fourth aspect, the disclosed embodiments provide a computer-readable storage medium having stored thereon a computer program, which, when executed by a processor, performs the steps of the presentation method according to the first aspect.
In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly described below, and the drawings herein incorporated in and forming a part of the specification illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the technical solutions of the present disclosure. It is appreciated that the following drawings depict only certain embodiments of the disclosure and are therefore not to be considered limiting of its scope, for those skilled in the art will be able to derive additional related drawings therefrom without the benefit of the inventive faculty.
Fig. 1 shows a flowchart of a method for displaying a city sand table according to an embodiment of the present disclosure;
FIG. 2 is a flowchart illustrating a first method for displaying a presentation special effect of a city sand table according to an embodiment of the present disclosure;
FIG. 3 is a flowchart illustrating a second method for displaying a special presentation effect of a city sand table according to an embodiment of the present disclosure;
FIG. 4 is a flowchart illustrating a third method for displaying a special effect of a city sand table according to an embodiment of the disclosure;
FIG. 5 is a flowchart illustrating a method for constructing a city sand table model according to an embodiment of the disclosure;
fig. 6 is a schematic diagram illustrating a display device of a city sand table provided in an embodiment of the present disclosure;
fig. 7 shows a schematic diagram of an electronic device provided by an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. The components of the embodiments of the present disclosure, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure, presented in the figures, is not intended to limit the scope of the claimed disclosure, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making creative efforts, shall fall within the protection scope of the disclosure.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The term "and/or" herein merely describes an associative relationship, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.
The problem that the space is limited when the city sand table is displayed in an exhibition hall is solved by applying the AR technology to the exhibition hall to display the sand table, how to display the city sand table based on the AR technology to improve the space utilization rate and the display effect is worthy of research.
Based on the research, the disclosure provides a display scheme of a city sand table, which detects a gesture trigger operation of a user, determines city sand table data to be displayed in an AR scene and a corresponding display mode based on a pre-constructed city sand table model representing a target city, wherein the city sand table data belongs to part or all of the data of the city sand table model and meets the requirements of the user for watching microcosmic and panoramic views, controls an AR device to display according to the position and posture data of the AR device in the target exhibition hall, the display mode of the city sand table data and the city sand table data selected by the user, and displays the city sand table based on an AR technology, thereby effectively saving space and improving space utilization rate. The interactivity in the AR scene and the display effect of the AR scene are improved.
In order to understand the embodiment, first, a detailed description is given to a method for displaying a city sand table disclosed in the embodiment of the present disclosure, where an execution subject of the method for displaying a city sand table provided in the embodiment of the present disclosure is generally a computer device with certain computing capability, and specifically may be a terminal device or a server or other processing device, for example, a server connected to an AR device, where the AR device may include devices with display functions and data processing capabilities, such as AR glasses, a tablet computer, a smart phone, and a smart wearing device, and the AR device may be connected to the server through an application program. In some possible implementations, the method for displaying the city sand table can be implemented by a processor calling computer readable instructions stored in a memory.
Referring to fig. 1, a flowchart of a method for displaying an urban sand table provided in the embodiment of the present disclosure is shown, where the method for displaying an urban sand table includes the following steps S101 to S102:
s101, responding to gesture trigger operation of a user, and determining city sand table data in an AR scene and a display mode of the city sand table data based on a pre-constructed city sand table model of a target city; the city sand table data belongs to part or all of the data of the city sand table model.
For example, the gesture trigger operation of a specific pointer to the city sand table model may be detected in different ways for different types of AR devices, for example, for an AR device including a camera, whether the gesture trigger operation exists may be determined by collecting a gesture image of a user, and for an AR device including a display screen, whether the gesture trigger operation exists may also be determined by detecting a gesture click acting on the display screen.
Further, a gesture trigger operation for selecting the city sand table data and a gesture trigger operation for selecting the presentation mode of the city sand table data may be included, for example, the city sand table data in the AR scene may be determined through a first gesture trigger operation of the user, and the presentation mode of the city sand table data may be determined through a second gesture trigger operation of the user.
The city sand table model is a three-dimensional model constructed based on a pre-acquired city scene image of a target city, can be used for displaying the appearance special effect of the target city, and can contain a plurality of city elements such as buildings, streets, plants and the like, and the specific construction mode will be described in detail later.
The city sand table data in the AR scene may specifically be part or all of data in a city sand table model, for example, for a hang state of a city, the city sand table model corresponding to the city includes a plurality of city elements in the hang state, and if it is detected that the gesture trigger operation of the user is a trigger operation for a scenic spot "thunderpeak tower", the city sand table data may include related data of the scenic spot "thunderpeak tower", and exemplarily, the city sand table data may include display morphology data, size data, display state data, and the like of the scenic spot "thunderpeak tower".
The display mode of the city sand table data in the AR scene may be a mode indicating how the city sand table data is displayed, for example, whether the city sand table is displayed sequentially from bottom to top, or appears in a rotating manner, or is displayed in a zooming manner, which may be determined according to a gesture trigger operation of the user.
S102, acquiring pose data of the AR equipment in the target exhibition hall in real time, and controlling the AR equipment to display the city sand table data according to the display mode based on the pose data of the AR equipment, the determined city sand table data in the AR scene and the display mode of the city sand table data.
For example, the pose data of the AR device in the target exhibition hall may include a position and/or a display angle of a display part for displaying the city sand table when the user holds or wears the AR device.
Wherein, the display part of AR equipment specifically indicates the part that is arranged in this AR equipment to show city sand table, and exemplarily, when AR equipment is cell-phone or flat board, corresponding display part can be the display screen, and when AR equipment is AR glasses, corresponding display part can be for the lens that is used for showing city sand table.
The embodiment of the present disclosure may include multiple AR devices, where different AR devices have different displayed viewing angles when corresponding current pose data are different, and for the same AR device, when the pose data of the AR device change, the displayed viewing angles are also different, so when the AR devices are controlled to display the urban sand table data in a display manner, it is necessary to determine the morphology angle of the urban sand table in the AR scene displayed for the AR device together with the pose data of the AR device, for example, for the same urban sand table "thunderpeak tower", if the viewing direction of one of the users carrying the AR device is different from the viewing direction of the AR device carried by another user, the special effects of the "thunderpeak tower" displayed in the AR scenes of the two AR devices are also different.
Specifically, the obtaining of the pose data of the AR device in the target exhibition hall in real time may be performed in multiple ways, and in one real-time way, the obtaining of the pose data of the AR device in the target exhibition hall in real time may include:
(1) acquiring a real scene image of a target exhibition hall shot by AR equipment in real time;
(2) and determining the pose data of the AR equipment in the target exhibition hall based on the real scene image and a pre-constructed three-dimensional scene model representing the target exhibition hall.
For example, the three-dimensional scene model may be constructed based on a plurality of sample images of the target exhibition hall photographed in advance, specifically, during construction, the three-dimensional scene model may be constructed by extracting feature points in each sample image, after the three-dimensional scene model is generated, the sample image corresponding to each feature point in the three-dimensional scene model and the photographing pose of the sample image in the three-dimensional scene model may be stored, so that after the real scene image of the target exhibition hall photographed by the AR device is acquired, the feature points may be extracted from the real scene image, the sample image matched with the real scene image is determined based on the extracted feature points, and finally pose data of the AR device in the three-dimensional scene model is obtained.
Because the three-dimensional scene model is a model representing the target exhibition hall, the pose data of the AR device in the three-dimensional scene model can be used as the pose data of the AR device in the target exhibition hall.
The three-dimensional scene model can be constructed based on a plurality of real scene images shot in advance for the target exhibition hall, and after the construction is completed, the constructed three-dimensional scene model can be corrected through a real two-dimensional map corresponding to the target exhibition hall, so that the three-dimensional scene model representing the target exhibition hall with high accuracy is obtained.
How to control the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display mode of the city sand table data will be described below with reference to a specific embodiment.
In one embodiment, the city sand table data comprises display states of all characteristic points in the city sand table at multiple moments.
For example, each feature point of the city sand table may be a feature point forming an outline of the city sand table, and the display state of each feature point may include a transparent display state or an opaque display state, and for one of the feature points, taking 10 moments as an example, the display state of the feature point at the 10 moments may include a transparent display state at the first 9 moments and an opaque display state at the 10 th moments, in which the user may see a special presentation effect of the city sand table at the feature point through the AR device.
For example, if each feature point constituting the city sand table is in an opaque display state, the user may see the rendering special effect of the city sand table through the AR device, and if each feature point constituting the city sand table is in a transparent display state, the user may not see the rendering special effect of the city sand table through the AR device.
When the city sand table data includes display states of each feature point in the city sand table at multiple times, and as for S102, when the AR device is controlled to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display mode of the city sand table data, as shown in fig. 2, the following steps S201 to S202 may be specifically included:
s201, determining display state change data of each feature point in the urban sand table in a preset time length in a display mode based on the urban sand table data and the display mode;
s202, based on the pose data and the display state change data of the AR device, the AR device is controlled to display the display special effect of the urban sand table integrated into the real scene within the preset time length.
For example, the preset duration may be a duration from the detection of the existence of the gesture trigger operation of the user to the stable display of the city sand table data matched with the gesture trigger operation in the AR device, in this embodiment, the stable display of the city sand table data may be that the display states corresponding to the feature points in the city sand table are all opaque display states, that is, a complete city sand table is displayed in the AR scene.
The display state change data of each feature point in the city sand table in the preset time duration refers to change data of a display state corresponding to each feature point at each time within the preset time duration, for example, the preset time duration includes 10 continuous times, and here, the display state change data of each feature point in the 10 continuous times can be determined.
In this embodiment, the displaying manner is to control the city sand table to be gradually displayed, for example, the bottom of the city sand table is displayed first, and then the whole city sand table is gradually displayed within the preset time period from the bottom to the top.
The embodiment of the disclosure provides that the operation can be triggered according to the gesture of the user, the whole city sand table in the city sand table model is gradually displayed, and the interactivity when the city sand table is displayed in an AR scene is improved.
In another embodiment, the city sand table data includes size data corresponding to the city sand table at a plurality of times.
Illustratively, the size of each city sand table can be enlarged or reduced in the same scale, and at a plurality of consecutive moments, the size data of the city sand table can be gradually increased from the preset minimum size data or gradually decreased from the preset maximum size data.
When the city sand table data includes size data corresponding to the city sand table at a plurality of times, as for S102, when the AR device is controlled to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display mode of the city sand table data, as shown in fig. 3, S301 to S302 may be included:
s301, determining size change data of the urban sand table within a preset time length in the display mode based on the urban sand table data and the display mode;
and S302, controlling the AR equipment to display the special presentation effect of the urban sand table fused into the real scene within a preset time length based on the pose data and the size change data of the AR equipment.
Similarly, the preset duration may be a duration from the detection of the presence of the gesture trigger operation of the user to the stable display of the city sand table data matching with the gesture trigger operation in the AR device, and in this embodiment, the stable display of the city sand table data may be a state when the size data of the city sand table is no longer changed.
The size change data of the city sand table within the preset time duration refers to a change state of the size data corresponding to the city sand table at each time within the preset time duration, and for example, the preset time duration includes 10 consecutive times, where the size change data of the city sand table in the 10 consecutive times can be determined.
In this embodiment, the displaying manner may be that the urban sand table is controlled to gradually increase from the preset minimum size until the preset maximum size is reached, and when the AR device is controlled to display the urban sand table within the preset duration, a special presentation effect that the urban sand table gradually increases from the preset minimum size may be presented.
In one possible implementation, the city sandbox data also includes information of the virtual tags that match the city sandbox.
Illustratively, the information of the virtual tag matched with the city sand table includes information of an introduction tag of information of the year, the role and the like of the city sand table, and the information of the virtual tag may include, but is not limited to, the size, the color, the presentation position and the presentation mode of the virtual tag.
In the case that the city sand table data further includes information of a virtual tag matched with the city sand table, for the above S102, when the AR device is controlled to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display mode of the city sand table data, as shown in fig. 4, the following S401 to S402 may be included:
s401, determining the presenting size and the presenting mode of the virtual label matched with the city sand table in the presenting mode based on the city sand table data and the presenting mode;
s402, controlling the AR equipment to display the city sand table merged into the real scene and the display special effect of the corresponding virtual label based on the display size and the display mode of the AR equipment and the virtual label.
Illustratively, the size of the virtual tag when it is rendered is represented by the rendering size of the virtual tag, and the rendering manner may represent when the virtual tag is rendered, how the virtual tag is rendered, for example, the virtual tag may be rendered after the rendering of the city sand table, and the virtual tag is displayed from top to bottom when it is rendered.
In the embodiment of the disclosure, the virtual tag introducing the city sand table can be displayed in the AR scene, so that the AR scene is more vivid and lively when the city sand table is displayed.
In another embodiment, before controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display mode of the city sand table data, the display method provided by the embodiment of the present disclosure further includes:
and determining the display position of the city sand table data in the target exhibition hall based on the mapping relation between the city sand table data and the preset display position.
The display position may include a spatial position, for example, the position of each entity object in the target exhibition hall may be predetermined, and then the specific position where the city sand table data may be displayed may be determined when displaying the city sand table data according to the mapping relationship between the city sand table data and the preset display position.
For example, if the display position is a position area corresponding to the upper surface of a physical table in the target exhibition hall, the display position of the city sand table data in the target exhibition hall is the physical table.
When controlling AR equipment to show city sand table data according to the show mode, include:
and controlling the AR equipment to display the urban sand table data fused into the display position according to the display mode.
In the embodiment of the disclosure, the virtual city sand table to be displayed can be combined with the real object in the target exhibition hall, so that the display effect is increased, and the display content of the augmented reality is more vivid.
For the above-mentioned city sand table model, as shown in fig. 5, the city sand table model representing the target city may be pre-constructed in the following manner, including S501 to S503:
s501, acquiring a plurality of city scene images of a target city;
s502, generating an initial city sand table model corresponding to a target city based on a plurality of city scene images;
and S503, adjusting the initial city sand table model based on the real two-dimensional map corresponding to the target city to obtain the adjusted city sand table model.
The size proportional relation between all the city elements in the real two-dimensional map and the adjusted city sand table model can be consistent with the size proportional relation between all the real city elements in the target city.
The generated initial city sand table model may have a distortion phenomenon, and then the initial city sand table model with higher accuracy can be obtained by adjusting the initial city sand table model through a real two-dimensional map.
Specifically, for S502, when generating an initial city sand table model corresponding to a target city based on a plurality of city scene images, the method includes:
(1) extracting a plurality of characteristic points from each acquired urban scene image;
(2) generating an initial city sand table model based on the extracted multiple feature points and a pre-stored three-dimensional sample graph matched with the target city; the three-dimensional sample graph is a pre-stored three-dimensional graph representing the topographic features of the target city.
Specifically, the feature points extracted for each real scene image may be points capable of representing key information of the real scene image, such as for a real scene image containing a building, where the feature points may represent feature points of the building outline information.
Illustratively, the pre-stored three-dimensional sample graph matching the target city may include a three-dimensional graph with dimension labels and capable of characterizing the topographic features of the target city, such as a Computer Aided Design (CAD) three-dimensional graph characterizing the topographic features of the target city.
Aiming at the target city, when the extracted feature points are sufficient, the sand table model representing the target city can be formed by the feature point clouds formed by the feature points, the feature points in the feature point clouds are unitless, the sand table model formed by the feature point clouds is also unitless, and then the initial city sand table model corresponding to the target city is obtained after the feature point clouds are aligned with a three-dimensional graph which is provided with scale marks and can represent the feature of the target city.
For the above S503, some feature points representing spatial position points of the edge and corner of the building may be selected as standard feature points, then a coordinate adjustment amount is determined based on the real coordinate data corresponding to the standard feature points and the coordinate data of the standard feature points in the initial city sand table model, and then the coordinate data of each feature point in the initial city sand table model is corrected based on the coordinate adjustment amount, so that the city sand table model with higher accuracy can be obtained.
It will be understood by those skilled in the art that in the method of the present invention, the order of writing the steps does not imply a strict order of execution and any limitations on the implementation, and the specific order of execution of the steps should be determined by their function and possible inherent logic.
Based on the same technical concept, the embodiment of the present disclosure further provides a display apparatus of an urban sand table corresponding to the display method of the urban sand table, and as the principle of the apparatus in the embodiment of the present disclosure for solving the problem is similar to the display method of the urban sand table in the embodiment of the present disclosure, the implementation of the apparatus may refer to the implementation of the method, and repeated details are not described again.
Referring to fig. 6, a schematic view of a display device 600 for an urban sand table provided in an embodiment of the present disclosure is shown, where the display device includes:
the determining module 601 is configured to determine, in response to a gesture trigger operation of a user, city sand table data in an AR scene and a display mode of the city sand table data based on a pre-constructed city sand table model of a target city; the urban sand table data belongs to part or all of data of the urban sand table model;
the control module 602 is configured to acquire pose data of the AR device in the target exhibition hall in real time, and control the AR device to display the city sand table data according to a display mode based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display mode of the city sand table data.
In one possible implementation, the control module 602, when being configured to acquire pose data of the AR device in the target exhibition hall in real time, includes:
acquiring a real scene image of a target exhibition hall shot by AR equipment in real time;
and determining the pose data of the AR equipment in the target exhibition hall based on the real scene image and a pre-constructed three-dimensional scene model representing the target exhibition hall.
In one possible implementation mode, the city sand table data comprises the display states of all characteristic points in the city sand table at multiple moments;
when the control module 602 is configured to control the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display mode of the city sand table data, the method includes:
determining display state change data of each feature point in the urban sand table in a preset time length in the display mode based on the urban sand table data and the display mode;
and controlling the AR equipment to display the special presentation effect of the urban sand table fused into the real scene within a preset time length based on the pose data and the display state change data of the AR equipment.
In one possible implementation, the city sand table data comprises size data corresponding to the city sand table at a plurality of moments;
when the control module 602 is configured to control the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display mode of the city sand table data, the method includes:
determining size change data of the urban sand table within preset time length in the display mode based on the urban sand table data and the display mode;
and controlling the AR equipment to display the special effect of the city sand table fused into the real scene within the preset time length based on the pose data and the size change data of the AR equipment.
In one possible implementation, the city sand table data further includes information of a virtual tag matching the city sand table;
when the control module 602 is configured to control the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display mode of the city sand table data, the method includes:
determining the presentation size and the presentation mode of the virtual label matched with the city sand table in the presentation mode based on the city sand table data and the presentation mode;
and controlling the AR equipment to display the city sand table merged into the real scene and the display special effect of the corresponding virtual label based on the display size and the display mode of the AR equipment and the virtual label.
In a possible implementation manner, before controlling the AR device to display the city sand table data according to the display manner based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display manner of the city sand table data, the control module 602 is further configured to:
determining the display position of the urban sand table data in the target exhibition hall based on the mapping relation between the urban sand table data and the preset display position;
when being used for controlling AR equipment to show city sand table data according to the display mode, the control module comprises:
and controlling the AR equipment to display the urban sand table data fused into the display position according to the display mode.
In a possible implementation manner, the display apparatus further includes a model building module 603, and the model building module 603 pre-builds a city sand table model representing the target city according to the following manner:
acquiring a plurality of city scene images of a target city;
generating an initial city sand table model corresponding to a target city based on a plurality of city scene images;
and adjusting the initial city sand table model based on the real two-dimensional map corresponding to the target city to obtain the adjusted city sand table model.
In a possible implementation, the model building module 603, when configured to generate an initial city sand table model corresponding to a target city based on multiple city scene images, includes:
extracting a plurality of characteristic points from each acquired urban scene image;
generating an initial city sand table model based on the extracted multiple feature points and a pre-stored three-dimensional sample graph matched with the target city; the three-dimensional sample graph is a pre-stored three-dimensional graph representing the topographic features of the target city.
The description of the processing flow of each module in the device and the interaction flow between the modules may refer to the related description in the above method embodiments, and will not be described in detail here.
Corresponding to the method for displaying the city sand table in fig. 1, an embodiment of the present disclosure further provides an electronic device 700, and as shown in fig. 7, a schematic structural diagram of the electronic device 700 provided in the embodiment of the present disclosure includes:
a processor 71, a memory 72, and a bus 73; the memory 72 is used for storing execution instructions and includes a memory 721 and an external memory 722; the memory 721 is also referred to as an internal memory, and is used for temporarily storing the operation data in the processor 71 and the data exchanged with the external memory 722 such as a hard disk, the processor 71 exchanges data with the external memory 722 through the memory 721, and when the electronic device 700 operates, the processor 71 communicates with the memory 72 through the bus 73, so that the processor 71 executes the following instructions: responding to gesture trigger operation of a user, and determining city sand table data in an AR scene and a display mode of the city sand table data based on a pre-constructed city sand table model of a target city; the urban sand table data belongs to part or all of data of the urban sand table model; and acquiring pose data of the AR equipment in the target exhibition hall in real time, and controlling the AR equipment to display the city sand table data according to the display mode based on the pose data of the AR equipment, the determined city sand table data in the AR scene and the display mode of the city sand table data.
The embodiment of the present disclosure further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for displaying a city sand table in the above method embodiments are executed. The storage medium may be a volatile or non-volatile computer-readable storage medium.
The computer program product of the method for displaying a city sand table provided in the embodiments of the present disclosure includes a computer-readable storage medium storing a program code, where instructions included in the program code may be used to execute the steps of the method for displaying a city sand table in the embodiments of the method described above, which may be referred to in the embodiments of the method specifically, and are not described herein again.
The embodiments of the present disclosure also provide a computer program, which when executed by a processor implements any one of the methods of the foregoing embodiments. The computer program product may be embodied in hardware, software or a combination thereof. In an alternative embodiment, the computer program product is embodied in a computer storage medium, and in another alternative embodiment, the computer program product is embodied in a Software product, such as a Software Development Kit (SDK), or the like.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In the several embodiments provided in the present disclosure, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present disclosure. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present disclosure, which are used for illustrating the technical solutions of the present disclosure and not for limiting the same, and the scope of the present disclosure is not limited thereto, and although the present disclosure is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive of the technical solutions described in the foregoing embodiments or equivalent technical features thereof within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present disclosure, and should be construed as being included therein. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (11)
1. A display method of an urban sand table is characterized by comprising the following steps:
responding to gesture trigger operation of a user, and determining city sand table data in an AR scene and a display mode of the city sand table data based on a pre-constructed city sand table model of a target city; wherein the urban sand table data belongs to part or all of the data of the urban sand table model;
the method comprises the steps of acquiring pose data of AR equipment in a target exhibition hall in real time, and controlling the AR equipment to display the city sand table data according to the display mode based on the pose data of the AR equipment, the determined city sand table data in the AR scene and the display mode of the city sand table data.
2. The display method according to claim 1, wherein the obtaining of pose data of the AR device in the target exhibition hall in real time comprises:
acquiring a real scene image of a target exhibition hall shot by the AR equipment in real time;
and determining the pose data of the AR equipment in the target exhibition hall based on the real scene image and a pre-constructed three-dimensional scene model representing the target exhibition hall.
3. The showing method according to claim 1 or 2, wherein the city sand table data comprises the display states of all characteristic points in the city sand table at a plurality of moments;
the controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene and the display mode of the city sand table data comprises:
determining display state change data of each feature point in the urban sand table in a preset time length in the display mode based on the urban sand table data and the display mode;
and controlling the AR equipment to display the special presentation effect of the urban sand table merged into the real scene in the preset time length based on the pose data of the AR equipment and the display state change data.
4. The showing method according to claim 1 or 2, wherein the city sand table data comprises size data corresponding to the city sand table at a plurality of moments;
the controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene and the display mode of the city sand table data comprises:
determining size change data of the urban sand table within preset time length in the display mode based on the urban sand table data and the display mode;
and controlling the AR equipment to display the special presentation effect of the urban sand table merged into the real scene within the preset time length based on the pose data and the size change data of the AR equipment.
5. The exhibition method according to any one of claims 1 to 4, wherein the city sand table data further comprises information of a virtual tag matching with the city sand table;
the controlling the AR device to display the city sand table data according to the display mode based on the pose data of the AR device, the determined city sand table data in the AR scene and the display mode of the city sand table data comprises:
determining presentation data and a presentation mode of a virtual label matched with the city sand table in the presentation mode based on the city sand table data and the presentation mode;
and controlling the AR equipment to display the rendering special effects of the urban sand table merged into the real scene and the corresponding virtual label based on the AR equipment and the rendering data and the rendering mode of the virtual label.
6. The display method according to any one of claims 1 to 5, wherein before controlling the AR device to display the city sand table data in the display manner based on the pose data of the AR device, the determined city sand table data in the AR scene, and the display manner of the city sand table data, the display method further comprises:
determining the display position of the urban sand table data in the target exhibition hall based on the mapping relation between the urban sand table data and a preset display position;
controlling the AR device to display the urban sand table data according to the display mode, comprising:
and controlling the AR equipment to display the urban sand table data merged into the display position according to the display mode.
7. The display method according to any one of claims 1 to 6, wherein a city sand table model representing a target city is pre-constructed in the following manner:
acquiring a plurality of city scene images of the target city;
generating an initial city sand table model corresponding to the target city based on the plurality of city scene images;
and adjusting the initial city sand table model based on the real two-dimensional map corresponding to the target city to obtain an adjusted city sand table model.
8. The method of claim 7, wherein the generating an initial city sand table model corresponding to the target city based on the plurality of city scene images comprises:
extracting a plurality of characteristic points from each acquired urban scene image;
generating the initial city sand table model based on the extracted multiple feature points and a pre-stored three-dimensional sample graph matched with the target city; and the three-dimensional sample graph is a pre-stored three-dimensional graph representing the topographic features of the target city.
9. A display device of city sand table, its characterized in that includes:
the determining module is used for responding to gesture triggering operation of a user and determining city sand table data in the AR scene and a display mode of the city sand table data based on a pre-constructed city sand table model of the target city; wherein the urban sand table data belongs to part or all of the data of the urban sand table model;
the control module is used for acquiring pose data of the AR equipment in a target exhibition hall in real time, and controlling the AR equipment to display the city sand table data according to the display mode based on the pose data of the AR equipment, the determined city sand table data in the AR scene and the display mode of the city sand table data.
10. An electronic device, comprising: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating via the bus when the electronic device is operating, the machine-readable instructions when executed by the processor performing the steps of the presentation method as claimed in any one of claims 1 to 8.
11. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, is adapted to carry out the steps of the presentation method as claimed in any one of the claims 1 to 8.
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Application publication date: 20200911 |