CN111968252A - AR course teaching resource management method and system - Google Patents
AR course teaching resource management method and system Download PDFInfo
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- CN111968252A CN111968252A CN202010966241.7A CN202010966241A CN111968252A CN 111968252 A CN111968252 A CN 111968252A CN 202010966241 A CN202010966241 A CN 202010966241A CN 111968252 A CN111968252 A CN 111968252A
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Abstract
The invention designs a method and a system for managing AR course teaching resources, wherein the method comprises the steps of establishing a limited fixed marker model and establishing a limited fixed static binding relationship; and creating a dynamic resource logical linked list of the marker model through the linked list. The invention provides an AR course teaching resource management method and system, solves the problems of large occupied memory, low efficiency and the like in the existing AR course resource management, and has the advantages of small occupied memory, flexible realization and high efficiency.
Description
Technical Field
The invention relates to the technical field of resource management, in particular to an AR course teaching resource management method and system.
Background
In the AR course resource teaching, an AR scene often needs a scene identifier, such as: the method comprises the steps of identifying a picture, and automatically calling a 3D model associated with the identifier when the AR system detects the identifier, wherein the 3D model and the identifier are usually associated together in a static binding manner, but in an AR course application, thousands of models and identifiers are often involved, and resources in the static binding need to be loaded into a memory in advance, so that the memory occupied by the operation is large. When the models and the identifiers are dynamically created in a cloud interaction mode, the management of the models and the identifiers in the static binding relationship is difficult to adapt to the dynamic increase of resources, and the operation efficiency is low.
Therefore, a method for dynamically managing AR course resources is needed to overcome the disadvantages caused by the static binding of the existing AR scene 3D model and the marker.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides an AR course teaching resource management method and system, which solve the problems of large occupied memory, low efficiency and the like in the existing AR course resource management and have the advantages of small occupied memory, flexible realization and high efficiency.
The method is realized by adopting the following technical scheme: a method for managing AR course teaching resources comprises the steps of creating a limited number of fixed marker models and establishing a limited number of fixed static binding relations; and creating a dynamic resource logical linked list of the marker model through the linked list.
In a first preferred embodiment of the present invention, the AR course teaching resource management method is implemented by creating a category attribute identifier, and includes the steps of:
s101, creating a limited fixed category attribute identifier model, and establishing a limited fixed static binding relationship;
s102, creating a dynamic resource logic linked list of the content identifier model through the linked list.
In a second preferred embodiment of the present invention, the AR course teaching resource management method is implemented by creating two category attribute identifiers through a linked list, and includes the steps of:
s201, creating a limited fixed first class attribute identifier model, and establishing a limited fixed static binding relationship;
s202, creating a dynamic resource logic linked list of the second category attribute identifier through the linked list;
s203, creating a dynamic resource logical linked list of the content identifier model through the linked list.
The system of the invention is realized by adopting the following technical scheme: an AR course teaching resource management system comprises a resource creating device, an AR resource pool, a network module and an AR presenting device, wherein an AR engine is arranged on the AR presenting device, the resource creating device is connected with the AR resource pool through the network module, and the AR presenting device is connected with the AR resource pool through the network module;
the resource creating device is used for creating a limited fixed category attribute identifier model, creating a limited fixed static binding relationship, and creating a head pointer binding relationship between a static identifier and a 3D model associated with the static identifier according to the category attribute of the course teaching resources; the limited fixed static binding relations are head pointer binding relations of the created static markers and the 3D models associated with the static markers; taking the static markers as class attributes of the course teaching resources, and enabling head pointers of the 3D models associated with the static markers to point to head nodes of different types of the course teaching resources; the resource creating device also creates a dynamic resource logic linked list of the identifier model through the linked list;
the AR resource pool stores the resources created by different resource creating devices;
the AR engine on the AR presentation device identifies the category attribute of the marker, when the AR engine identifies the category attribute, the logic linked list associated with the identified category attribute is sequentially loaded into the memory, the marker ID matched with the specific content marker attribute in the AR engine is searched in the logic linked list, and after the marker ID is found, the corresponding marker and the 3D model thereof are fixedly bound into the called AR engine, so that the marker and the associated 3D model thereof are presented by AR.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention manages resources by establishing the dynamic resource logic linked list of the specific marker model, searches the 3D model corresponding to the marker by using the linked list searching mode according to the attribute of the marker, occupies less memory resources, has simple realization method and greatly improves the processing efficiency.
2. The invention carries out remote resource establishment through the resource establishment device and realizes dynamic management through the modification of the resource logic linked list, thereby improving the adjustment efficiency of the resources and having the advantages of small development difficulty, short development period and flexible realization.
Drawings
FIG. 1 is a flow chart of example 1 of the method of the present invention;
FIG. 2 is a schematic diagram of a head pointer of a category attribute identifier and a 3D model associated with the category attribute identifier provided in embodiment 1 of the present invention;
FIG. 3 is a schematic view of a marker according to example 1 of the present invention;
FIG. 4 is a schematic view of the management logic of the identifier and the associated 3D model in embodiment 1 of the present invention;
FIG. 5 is a flowchart of embodiment 2 of the present invention;
FIG. 6 is a schematic view of the management logic of the identifier and the associated 3D model in embodiment 2 of the present invention;
fig. 7 is a schematic diagram of the system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
The invention relates to an AR course teaching resource management method, which comprises the steps of establishing a limited fixed marker model and establishing a limited fixed static binding relationship; and creating a dynamic resource logical linked list of the marker model through the linked list.
The AR course teaching resource management method can be realized by two modes of creating the category attribute marker and creating two category attribute markers by a linked list, and the detailed description is respectively carried out by two embodiments.
Example 1:
as shown in fig. 1, the AR course teaching resource management method of the present invention includes the following steps:
s101, creating a limited fixed category attribute identifier model, and establishing a limited fixed static binding relationship.
In the embodiment, a binding relationship between a static marker and a head pointer of a 3D model associated with the static marker is established according to the class attribute of the course teaching resources; the limited fixed static binding relations are head pointer binding relations of the created static markers and the 3D models associated with the static markers; the fixed static binding relations are set to be M, wherein M is a positive integer which is greater than or equal to 3 and is the specific number of the static binding relations.
And taking the static identifiers as class attributes of the course teaching resources, respectively recording the static identifiers as A, B-M, and pointing head pointers of the 3D models associated with the static identifiers to head nodes of different types of course teaching resources. And when the static marker is detected in the AR scene, triggering the corresponding linked list to load the corresponding course teaching resources into the memory.
As shown in FIG. 2, in this embodiment, a 128-bits data storage identifier is selected to match the three-dimensional model, where bits 127-64 store identifier IDs for distinguishing the category attributes of different resources, and bit63-0 stores a 3D model head pointer corresponding to the identifier for pointing to the head node of the associated 3D model resource.
In this embodiment, a limited number of fixed static binding relationships are established by different classifications. The specific classification includes: by species of the model, by class, by different place of creation (e.g., school district), by different creator. When different classifications are established, in the corresponding marker pictures, the category identification attribute is automatically established, such as: at the bottom of the marker picture, distinguishing the classification attributes by using different colors or characters and the like, as shown in fig. 3; the classification attribute can also be distinguished by different colors or characters in a specific area of the marker picture. If the color is the color, distinguishing the category attribute by detecting the color of the bottom end or the specific area; if the text is the text, the category attribute is identified through the text.
S102, creating a dynamic resource logic linked list of the content identifier model through the linked list.
As shown in fig. 4, in this embodiment, specific course teaching resources are classified according to category attributes, the course teaching resources of each attribute are created into a dynamic resource logical linked list through the linked list, the logical linked list includes a plurality of nodes, and each node mainly includes: content identifier ID, 3D model and Next node, and nodes can be added or deleted dynamically. The three content fields of each node are 64bits respectively, wherein the 3D model stores the 3D model object address. Through identifying the content identifier ID of the identifier, searching whether a corresponding matched content identifier and model exist through a dynamic resource logical linked list, and if the corresponding matched content identifier and model exist, associating the model with the content identifier and the model in the AR scene; if not, continuing to search in the logic linked list until the logic linked list is searched; if the last Null node is found all the time, the matched content identifier and the matched model are not found, and the matching failure is actively reported.
Example 2:
as shown in fig. 5, the AR course teaching resource management method of the present invention includes the following steps:
s201, creating a limited fixed first class attribute identifier model, and establishing a limited fixed static binding relation.
As shown in fig. 6, in this embodiment, a head pointer binding relationship between a first static identifier and a second category attribute identifier associated with the first static identifier is created according to a first category attribute of a course teaching resource; the limited fixed static binding relations are head pointer binding relations of the created first static identifier and the associated second category attribute identifier; the fixed static binding relations are set to be M, wherein M is a positive integer which is greater than or equal to 3 and is the specific number of the static binding relations. The second category attribute identifier head pointer associated with the first static identifier points to the head node of the second category attribute identifier logical linked list.
S202, creating a dynamic resource logical linked list of the second category attribute identifier through the linked list. The logical linked list comprises a plurality of nodes, each node mainly comprising: the second category attribute identifies ID, 3D model head pointer and Next node, and can add or delete nodes dynamically. A 3D model head pointer associated with the second category attribute identifier for pointing to a head node of the associated 3D model resource.
S203, creating a dynamic resource logical linked list of the content identifier model through the linked list.
In this embodiment, the specific course teaching resources are classified according to the second category attributes, and the course teaching resources of each second category attribute are created into a dynamic resource logical linked list through the linked list, where the logical linked list includes a plurality of nodes, and each node mainly includes: content identifier ID, 3D model and Next node, and nodes can be added or deleted dynamically. The three content fields of each node are 64bits respectively, wherein the 3D model stores the 3D model object address. Through identifying the content identifier ID of the identifier, searching whether a corresponding matched content identifier and model exist through a dynamic resource logical linked list, and if the corresponding matched content identifier and model exist, associating the model with the content identifier and the model in the AR scene; if not, continuing to search in the logic linked list until the logic linked list is searched; if the last Null node is found all the time, the matched content identifier and the matched model are not found, and the matching failure is actively reported.
As shown in fig. 7, based on the same inventive concept as the resource management method, the invention further provides an AR course teaching resource management system, which is specifically implemented by adopting the AR resource management method; it includes: the resource creating device is connected with the AR resource pool through the network module, and the AR presenting device is connected with the AR resource pool through the network module.
The resource creating device is used for creating a limited number of fixed category attribute identifier models, establishing a limited number of fixed static binding relations, and creating by different creators in different places and different platforms. The created resource contains two parts of content: the system automatically creates the category attribute again according to the identifier submitted by the creator to obtain the category attribute and the specific content identifier. For example, the category attribute is divided by creator, and the ID identification character of the creator is written in the category attribute as the category attribute. The resource creating device also creates a dynamic resource logical linked list of the content identifier model through the linked list.
AR resource pool: the network module is connected with the resource creating device to store the resources created by different resource creating devices, wherein the resources are managed by the created logic linked list.
A network module: and realizing the connection between the resource creating device and the AR resource pool and the connection between the AR presenting device and the AR resource pool.
The AR presentation device: and connecting to the AR resource pool through the network module. The AR engine identifies the category attribute of the identifier, when the AR engine identifies the category attribute (such as the identifier M), the logic linked list of the category attribute is sequentially loaded into the memory, the content identifier ID (such as the content identifier M5) matched with the specific content identifier attribute in the AR engine is searched in the logic linked list, and after the content identifier ID is found, the corresponding content identifier M5 and the 3D model M5 thereof are fixedly bound to the called AR engine, so that the content identifier and the associated 3D model thereof are presented by AR.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A method for managing AR course teaching resources is characterized in that a limited number of fixed marker models are created, and a limited number of fixed static binding relations are established; and creating a dynamic resource logical linked list of the marker model through the linked list.
2. The AR course teaching resource management method of claim 1 wherein said method is implemented by creating a category property identifier comprising the steps of:
s101, creating a limited fixed category attribute identifier model, and establishing a limited fixed static binding relationship;
s102, creating a dynamic resource logic linked list of the content identifier model through the linked list.
3. The AR course teaching resource management method of claim 1, wherein a binding relationship of a static marker to a head pointer of a 3D model associated therewith is created according to a category property of a course teaching resource; the limited fixed static binding relations are head pointer binding relations of the created static markers and the 3D models associated with the static markers; and taking the static identifiers as class attributes of the course teaching resources, and pointing head pointers of the 3D models associated with the static identifiers to head nodes of different types of course teaching resources.
4. The AR course teaching resource management method of claim 3, wherein a 128bits data storage identifier and the matched three-dimensional model are utilized, wherein bit127-64 stores a category property identifier ID and bit63-0 stores a 3D model head pointer corresponding to the identifier.
5. The AR course teaching resource management method of claim 3, wherein a limited number of fixed static binding relationships are established by category of model, by course, by different creation sites, by different creators, and when different categories are established, a category identification attribute is automatically created in the corresponding marker picture, and the category attribute is distinguished by different colors or characters at the bottom or in a specific area in the marker picture.
6. The AR course teaching resource management method of claim 1 wherein the resources are classified according to category attributes, the resources for each category attribute are created by a linked list into a dynamic logical linked list of resources, the logical linked list comprises a plurality of nodes, each node comprising: the content identifier ID, the 3D model and the Next node, wherein three content fields of each node are 64bits respectively, and the 3D model stores the 3D model object address.
7. The AR course teaching resource management method according to claim 6, wherein the identifier content ID is identified, the dynamic resource logical link table is used to search whether there is a corresponding matching content identifier and model, and if so, the model is associated with the content identifier and model in the AR scene; if not, continuing to search in the logic linked list until the logic linked list is searched; if the last Null node is found all the time, the matched content identifier and the matched model are not found, and the active report of the matching fails.
8. The AR course teaching resource management method of claim 1 wherein said method is implemented by creating two category attribute identifiers via a linked list, comprising the steps of:
s201, creating a limited fixed first class attribute identifier model, and establishing a limited fixed static binding relationship;
s202, creating a dynamic resource logic linked list of the second category attribute identifier through the linked list;
s203, creating a dynamic resource logical linked list of the content identifier model through the linked list.
9. An AR course teaching resource management system, comprising: the system comprises a resource creating device, an AR resource pool, a network module and an AR presenting device, wherein an AR engine is arranged on the AR presenting device, the resource creating device is connected with the AR resource pool through the network module, and the AR presenting device is connected with the AR resource pool through the network module;
the resource creating device is used for creating a limited fixed category attribute identifier model, creating a limited fixed static binding relationship, and creating a head pointer binding relationship between a static identifier and a 3D model associated with the static identifier according to the category attribute of the course teaching resources; the limited fixed static binding relations are head pointer binding relations of the created static markers and the 3D models associated with the static markers; taking the static markers as class attributes of the course teaching resources, and enabling head pointers of the 3D models associated with the static markers to point to head nodes of different types of the course teaching resources; the resource creating device also creates a dynamic resource logic linked list of the content identifier model through the linked list;
the AR resource pool stores the resources created by different resource creating devices;
the AR engine on the AR presentation device identifies the category attribute of the marker, when the AR engine identifies the category attribute, the logic linked list of the category attribute is loaded into the memory in sequence, the marker ID matched with the specific content marker attribute in the AR engine is searched in the logic linked list, and after the marker ID is found, the corresponding content marker and the 3D model thereof are fixedly bound into the called AR engine, so that the content marker and the 3D model related to the content marker are presented by AR.
10. The AR course teaching resource management system of claim 9 wherein the resources created by the resource creation means include an identifier and a model, wherein the creation of the identifier is performed by the system according to the content identifier submitted by the creator, the system automatically creates the category attribute again to obtain the category attribute and the specific content identifier;
and when the AR resource pool stores the resources created by the resource creating device, the created logic linked list is adopted to manage the resources.
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