CN113850919A - Loading display method and system of 3D model file and storage medium - Google Patents
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Abstract
The application relates to a loading display method, a loading display system and a storage medium of a 3D model file, and relates to the field of imaging display. The loading display method comprises the steps of firstly obtaining vehicle data information, loading and analyzing a low-precision 3D model file, obtaining a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading and analyzing, loading and analyzing a high-precision 3D model file, obtaining a high-precision 3D model according to the vehicle data information and the high-precision 3D model file after loading and analyzing, and finally replacing the low-precision 3D model with the high-precision 3D model. The loading display method provided by the application realizes rapid loading display of the high-precision 3D model, reduces the starting time of the system, and solves the problems of poor user experience and influence on driving caused by long loading time and display lag of the 3D model of the automobile in the related technology.
Description
Technical Field
The present application relates to the field of imaging display, and in particular, to a method, a system, and a storage medium for loading and displaying a 3D model file.
Background
At present, with the continuous development of image processing technology, the frequency of occurrence of holograms and holographic projections in work, entertainment and even daily life of people is higher and higher, the principle of holographic projection is a technology for recording and reproducing a real three-dimensional image of an object by utilizing the interference and diffraction principle, and the holographic projection can see different angles of the shot object by observing a photo in different directions and angles, so that the recorded image can enable people to generate stereoscopic vision. Therefore, the holographic imaging display system is widely applied to product exhibition, stage programs, game interaction, entertainment place interactive projection and the like, especially in the aspect of display, the energy utilization rate of the hologram and the holographic projection is far higher than that of the traditional projection, and the hologram has small volume, simple structure, good outdoor display effect, good imaging stability and the like, so that the hologram is used for automobile imaging display at present.
The panoramic parking image system of the automobile is also named as an AVM panoramic monitoring image system, the system not only can display a panoramic image, but also can simultaneously display a single-view image in any direction, a driver can accurately read the position and the distance of an obstacle by matching with a scale line, and the driver can smoothly pass through a narrow road section and also can quickly stop in a complex environment and avoid scratching by cutting. The traditional holographic image generation method is mainly realized by various algorithms, so the display effect is easily influenced by iteration times, when the calculation amount reaches a larger value, along with the iteration, the problems of stagnation, reduced quality of reconstructed images, long loading time and the like easily occur, particularly for the loading time, when the requirement on the imaging precision is higher, the problems are more prominent, for example, when displaying high-precision images, the most remarkable characteristics are that the loading time is longer, the display is delayed, and the corresponding operation can be carried out by a user and the like for a period of time, so that the use experience of the user is greatly reduced, and if the traditional holographic image generation method is in some driving stages, the delayed display possibly causes driving influence on the driver.
Disclosure of Invention
The embodiment of the application provides a loading display method and system for a 3D model file and a storage medium, and aims to solve the problems that in the related art, the loading time of a 3D model of an automobile is long, the display is delayed, so that the user experience is poor and the driving is influenced.
In a first aspect, a method for loading and displaying a 3D model file is provided, which includes the steps of:
acquiring vehicle data information, loading and analyzing a low-precision 3D model file, and obtaining a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading and analyzing;
and loading and analyzing a high-precision 3D model file, obtaining a high-precision 3D model according to the vehicle data information and the loaded and analyzed high-precision 3D model file, and replacing the low-precision 3D model with the high-precision 3D model.
In some embodiments, the loading and parsing the low-precision 3D model file, and obtaining the low-precision 3D model according to the vehicle data information and the loaded and parsed low-precision 3D model file includes:
constructing the low-precision 3D model file, and writing the low-precision 3D model file into a 3ds file according to the requirements of a 3ds format for storage;
analyzing the low-precision vehicle model file by using a 3D model read-write library, and loading the analyzed low-precision vehicle model file into one object of a holographic image display module so that the object contains all relevant configuration parameters imported into the low-precision 3D model file;
and obtaining a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading and analysis.
In some embodiments, after loading the parsed low-precision 3D model file, the method further includes:
storing all resource nodes of the low-precision 3D model file into a corresponding linked list structure;
traversing the corresponding linked list structure, and setting a corresponding rendering group ID value for each resource node according to the rendering sequence;
and reordering the corresponding linked list structures according to the arrangement sequence from small to large and according to the size of the rendering group ID value.
In some embodiments, after reordering the corresponding linked list structure according to the size of the rendering group ID value, the method further comprises:
generating a plurality of rotation matrixes according to the acquired vehicle data information, and respectively assigning values to all the rotation matrixes according to the requirements of the corresponding resource nodes;
and determining the attribute corresponding to each resource node according to the requirement of the corresponding resource node, and corresponding the direction of the attribute to the corresponding rotation matrix according to the characteristic corresponding to each resource node.
In some embodiments, after the corresponding orientation of the attribute of each resource node to the corresponding rotation matrix according to the corresponding feature of the resource node, the method further includes:
setting a flag bit after the low-precision 3D model file is loaded and analyzed;
transmitting the resource nodes of the low-precision 3D model file into a CPU according to the zone bits;
and according to the corresponding direction of the attribute, binding all the resource nodes with the corresponding rotation matrix respectively for rendering to obtain the corresponding low-precision 3D model.
In some embodiments, the vehicle data information includes vehicle state data information, related configuration parameters of the low-precision 3D model file, related configuration parameters of the high-precision 3D model file, and video data information of a vehicle camera.
In some embodiments, the vehicle data information is acquired, the low-precision 3D model file is loaded and analyzed, and the low-precision 3D model is obtained according to the vehicle data information and the loaded and analyzed low-precision 3D model file;
and after the low-precision 3D model is obtained, loading and analyzing a high-precision 3D model file, obtaining a high-precision 3D model according to the vehicle data information and the loaded and analyzed high-precision 3D model file, and replacing the low-precision 3D model with the high-precision 3D model.
In some embodiments, the vehicle data information is obtained;
synchronously loading and analyzing the low-precision 3D model file and the high-precision 3D model file;
and obtaining the low-precision 3D model according to the vehicle data information and the low-precision 3D model file after the loading and the analysis, obtaining the high-precision 3D model according to the vehicle data information and the high-precision 3D model file after the loading and the analysis, and replacing the low-precision 3D model with the high-precision 3D model.
In a second aspect, a loading display system for a 3D model file is provided, which includes:
the information acquisition module is used for acquiring vehicle data information;
the loading analysis module is used for loading and analyzing the low-precision 3D model file and the high-precision 3D model file respectively;
and the holographic image display module is used for generating a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after the loading and the analysis, generating a high-precision 3D model according to the vehicle data information and the high-precision 3D model file after the loading and the analysis, and replacing the low-precision 3D model with the high-precision 3D model.
In a third aspect, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the above-mentioned steps of loading a display method.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a loading display method of a 3D model file, the effect of quick loading and display is achieved by preloading a low-precision 3D model file, then a high-precision 3D model file is continuously loaded, and when the high-precision 3D model file is also loaded and displayed, the low-precision 3D model is replaced by the high-precision 3D model, so that the effect of high-precision display is achieved. The loading display method obviously reduces the waiting time of a client, achieves the balance of the effects of rapidly displaying the 3D model and displaying the high-precision 3D model under certain hardware conditions such as GPU, achieves rapid loading and rapid display, reduces the starting time of the system, and ensures that the display efficiency of the system is optimized under the condition that the hardware conditions such as the system and CPU are restricted.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for loading and displaying a 3D model file according to an embodiment of the present application;
fig. 2 is a schematic flowchart illustrating a process of loading and analyzing a low-precision 3D model file according to the loading display method for a 3D model file provided in the embodiment of the present application;
fig. 3 is a schematic flowchart illustrating a process of reordering all resource nodes in the loading display method for a 3D model file according to the embodiment of the present application;
fig. 4 is a schematic flow chart of a method for loading and displaying a 3D model file according to an embodiment of the present application to display a low-precision 3D model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a loading display method of a 3D model file, which can solve the problems of poor user experience and influence on driving caused by long loading time and display lag of a 3D model of an automobile in the related art.
Referring to fig. 1, the loading display method mainly includes:
acquiring vehicle data information, loading and analyzing a low-precision 3D model file, and obtaining a low-precision 3D model according to the vehicle data information and the loaded and analyzed low-precision 3D model file;
and loading and analyzing the high-precision 3D model file, obtaining a high-precision 3D model according to the vehicle data information and the loaded and analyzed high-precision 3D model file, and replacing the low-precision 3D model with the high-precision 3D model.
Specifically, the vertex quantity of high accuracy 3D model file is many, and the model detail texture is clear, can satisfy various demands such as door rotation opening, indicator light scintillation, and for high accuracy 3D model file, automotive interior information data has then been got rid of to low accuracy 3D model file, has suitably reduced the quantity of exterior finish, and the pixel of chartlet file has also suitably reduced in addition, the door also need not open etc. comprehensively, the vertex quantity of low accuracy 3D model has reduced by seventy percent for high accuracy 3D model.
Generally, the loading and analyzing time is positively correlated with the size of a 3D model file, namely the number of vertices and the number of faces of the 3D model, the loading and displaying method comprises the steps of firstly loading and analyzing a low-precision 3D model file to enable the 3D model in a picture to be displayed as soon as possible, meanwhile, continuously loading a high-precision 3D model file in a background, realizing the display of the high-precision 3D model after the loading and analyzing of the high-precision 3D model file are completed, releasing related resources related to the low-precision 3D model, and enabling the high-precision 3D model to be displayed in the picture finally. In the loading display method, the loading analysis time consumption of the low-precision 3D model file can be reduced by more than seventy percent compared with the loading analysis time consumption of the high-precision 3D model file, after the low-precision 3D model file is loaded and analyzed, the model display of a picture can be realized quickly, the waiting time of a client is reduced, then after the high-precision 3D model file is loaded, analyzed and displayed, the low-precision 3D model is replaced by the high-precision 3D model, the improvement of the precision is realized, the balance of the effects of displaying the 3D model and the high-precision 3D model can be rapidly realized under the condition of certain hardware conditions such as GPU (graphics processing unit) and the like, the display efficiency of the system is optimized, and the waiting time of the client is reduced, so the loading analysis time is also reduced on the whole.
Further, referring to fig. 2, the loading and analyzing of the low-precision 3D model file, and obtaining the low-precision 3D model according to the vehicle data information and the loaded and analyzed low-precision 3D model file specifically include the steps of:
constructing a low-precision 3D model file, and writing the low-precision 3D model file into a 3ds file according to the requirements of a 3ds format for storage;
analyzing the low-precision vehicle model file by using a 3D model read-write library, and loading the analyzed low-precision vehicle model file into one object of a holographic image display module so that the object contains all relevant configuration parameters imported into the low-precision 3D model file;
and obtaining a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading and analysis.
Further, as shown in fig. 3, after loading and parsing the low-precision 3D model file, the following steps are further included:
storing all resource nodes of the low-precision 3D model file into corresponding linked list structures;
traversing the corresponding linked list structure, and setting a corresponding rendering group ID value for each resource node according to the rendering sequence;
and reordering the corresponding linked list structures according to the arrangement sequence from small to large and according to the size of the ID value of the rendering group.
Specifically, the processing method determines the rendering sequence of each resource node according to the rendering effect of the GPU, traverses the linked lists of the resource nodes, sets the rendering group ID values of all the resource nodes to 1, 2, 3, 4, and 5 … according to the rendering sequence, reorders the linked lists of the resource nodes according to the rendering group ID values, and after the reordering is completed, the resource nodes can be directly transmitted to the GPU for rendering according to the linked list sequence in the rendering frame stage without repeated node logic judgment, thereby effectively reducing the time consumed by single rendering and improving the work efficiency of the CPU and the GPU.
Further, as shown in fig. 4, after reordering the corresponding linked list structure according to the size of the rendering group ID value, the method further includes the following steps:
generating a plurality of rotation matrixes according to the acquired vehicle data information, and respectively assigning values to all the rotation matrixes according to the requirements of corresponding resource nodes;
and determining the attribute corresponding to each resource node according to the requirement of the corresponding resource node, and corresponding the direction of the attribute to the corresponding rotation matrix according to the characteristic corresponding to each resource node.
Further, after the direction of the attribute of each resource node is corresponding to the corresponding rotation matrix according to the corresponding feature of each resource node, the method further comprises the following steps:
setting a flag bit after the low-precision 3D model file is loaded and analyzed;
transmitting the resource nodes of the low-precision 3D model file into a CPU according to the flag bits;
and according to the direction of the corresponding attribute, binding all the resource nodes with the corresponding rotation matrix respectively to render, so as to obtain the corresponding low-precision 3D model.
Specifically, door opening and closing rotation matrixes, wheel rotation matrixes and the like can be generated according to the acquired vehicle data information, wherein the number of one type of rotation matrixes is the same as the number of resource nodes, for example, the number of door opening and closing rotation matrixes is multiple and is the same as the number of resource nodes, but a part of the door opening and closing rotation matrixes are unit matrixes and are used for binding with non-vehicle door resource nodes respectively, the rest of the door opening and closing rotation matrixes are not unit matrixes and are bound with vehicle door-related resource nodes respectively, in addition, the attributes are attribute pointers, and the binding refers to assigning addresses of the corresponding rotation matrixes to the corresponding attribute pointers. In the method, in the stage of rendering the picture, logic judgment is not needed to be carried out on a single resource node, and binding is carried out once according to the attribute pointers, so that the time consumption of single rendering is effectively reduced, and the efficiency of a CPU (Central processing Unit) and a GPU (graphics processing Unit) is improved.
Similarly, the loading, analyzing and displaying process of the high-precision 3D model file is consistent with that of the low-precision 3D model file, and the method and the process are the same as those of the low-precision 3D model file, except that the related configuration parameters of the high-precision 3D model file are taken.
Further, the vehicle data information comprises vehicle state data information, related configuration parameters of the low-precision 3D model file, related configuration parameters of the high-precision 3D model file and video data information of the vehicle camera. The video data information of the vehicle camera is used for displaying a panoramic image of the surrounding environment corresponding to the 3D model, and the related configuration parameters of the low-precision 3D model file and the related configuration parameters of the high-precision 3D model file are respectively and correspondingly taken corresponding to the type of the model file loaded and analyzed by the low-precision 3D model file and the high-precision 3D model file.
Furthermore, the method comprises two line types of loading and analyzing the low-precision 3D model file and the high-precision 3D model file, wherein the first line type comprises the steps of obtaining vehicle data information, loading and analyzing the low-precision 3D model file, obtaining a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading and analyzing, starting to load and analyze the high-precision 3D model file after obtaining the low-precision 3D model, obtaining a high-precision 3D model according to the vehicle data information and the high-precision 3D model file after loading and analyzing, and replacing the low-precision 3D model with the high-precision 3D model. In the form, the low-precision 3D model file and the high-precision 3D model file are sequentially loaded and analyzed.
The second method comprises the steps of firstly obtaining vehicle data information, then synchronously loading and analyzing a low-precision 3D model file and a high-precision 3D model file, then obtaining a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading and analyzing, then obtaining a high-precision 3D model according to the vehicle data information and the high-precision 3D model file after loading and analyzing, and finally replacing the low-precision 3D model with the high-precision 3D model. Compared with the first form, the second parallel loading analysis mode can realize simultaneous loading by starting two threads independently during loading, but compared with the first form, the loading analysis time of the low-precision 3D model file is delayed because the low-precision 3D model file is in a state of simultaneous loading analysis at the beginning, so that the display time of the low-precision 3D model in the form is slower than that of the first form, but compared with the traditional loading analysis method, the time is still improved.
The application also provides a loading display system of the 3D model file, which comprises an information acquisition module, a loading analysis module and a holographic image display module, wherein the information acquisition module is used for acquiring vehicle data information, the loading analysis module is respectively used for loading and analyzing the low-precision 3D model file and the high-precision 3D model file, the holographic image display module is used for generating a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading analysis, and is also used for generating a high-precision 3D model according to the vehicle data information and the high-precision 3D model file after loading analysis, and the low-precision 3D model is replaced by the high-precision 3D model.
The function implementation of each unit in the image super-resolution device corresponds to each step in the image super-resolution method, and the function and implementation process are not described in detail herein.
The present application also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, performs the steps of the above-mentioned image super-resolution method.
The method implemented when the computer program is executed may refer to the steps of the image super-resolution method, which are not described herein again.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A loading display method of a 3D model file is characterized by comprising the following steps:
acquiring vehicle data information, loading and analyzing a low-precision 3D model file, and obtaining a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading and analyzing;
and loading and analyzing a high-precision 3D model file, obtaining a high-precision 3D model according to the vehicle data information and the loaded and analyzed high-precision 3D model file, and replacing the low-precision 3D model with the high-precision 3D model.
2. The method for loading and displaying the 3D model file according to claim 1, wherein the loading and analyzing the low-precision 3D model file, and obtaining the low-precision 3D model according to the vehicle data information and the loaded and analyzed low-precision 3D model file comprises:
constructing the low-precision 3D model file, and writing the low-precision 3D model file into a 3ds file according to the requirements of a 3ds format for storage;
analyzing the low-precision vehicle model file by using a 3D model read-write library, and loading the analyzed low-precision vehicle model file into one object of a holographic image display module so that the object contains all relevant configuration parameters imported into the low-precision 3D model file;
and obtaining a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading and analysis.
3. The method for loading and displaying the 3D model file according to claim 1, further comprising, after loading and parsing the low-precision 3D model file:
storing all resource nodes of the low-precision 3D model file into a corresponding linked list structure;
traversing the corresponding linked list structure, and setting a corresponding rendering group ID value for each resource node according to the rendering sequence;
and reordering the corresponding linked list structures according to the arrangement sequence from small to large and according to the size of the rendering group ID value.
4. The method as claimed in claim 3, wherein after reordering the corresponding linked list structure according to the size of the rendering group ID value, the method further comprises:
generating a plurality of rotation matrixes according to the acquired vehicle data information, and respectively assigning values to all the rotation matrixes according to the requirements of the corresponding resource nodes;
and determining the attribute corresponding to each resource node according to the requirement of the corresponding resource node, and corresponding the direction of the attribute to the corresponding rotation matrix according to the characteristic corresponding to each resource node.
5. The method as claimed in claim 4, wherein after the corresponding orientation of the attribute of each resource node is corresponding to the corresponding rotation matrix according to the corresponding feature of the resource node, the method further comprises:
setting a flag bit after the low-precision 3D model file is loaded and analyzed;
transmitting the resource nodes of the low-precision 3D model file into a CPU according to the zone bits;
and according to the corresponding direction of the attribute, binding all the resource nodes with the corresponding rotation matrix respectively for rendering to obtain the corresponding low-precision 3D model.
6. The method for loading and displaying the 3D model file according to claim 1, wherein: the vehicle data information comprises vehicle state data information, relevant configuration parameters of the low-precision 3D model file, relevant configuration parameters of the high-precision 3D model file and video data information of a vehicle camera.
7. The method for loading and displaying the 3D model file according to claim 1, wherein:
acquiring the vehicle data information, loading and analyzing the low-precision 3D model file, and obtaining the low-precision 3D model according to the vehicle data information and the low-precision 3D model file after loading and analyzing;
and after the low-precision 3D model is obtained, loading and analyzing a high-precision 3D model file, obtaining a high-precision 3D model according to the vehicle data information and the loaded and analyzed high-precision 3D model file, and replacing the low-precision 3D model with the high-precision 3D model.
8. The method for loading and displaying the 3D model file according to claim 1, wherein:
acquiring the vehicle data information;
synchronously loading and analyzing the low-precision 3D model file and the high-precision 3D model file;
and obtaining the low-precision 3D model according to the vehicle data information and the low-precision 3D model file after the loading and the analysis, obtaining the high-precision 3D model according to the vehicle data information and the high-precision 3D model file after the loading and the analysis, and replacing the low-precision 3D model with the high-precision 3D model.
9. A loading display system of a 3D model file is characterized by comprising:
the information acquisition module is used for acquiring vehicle data information;
the loading analysis module is used for loading and analyzing the low-precision 3D model file and the high-precision 3D model file respectively;
and the holographic image display module is used for generating a low-precision 3D model according to the vehicle data information and the low-precision 3D model file after the loading and the analysis, generating a high-precision 3D model according to the vehicle data information and the high-precision 3D model file after the loading and the analysis, and replacing the low-precision 3D model with the high-precision 3D model.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of loading a display method according to any one of claims 1 to 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116958433A (en) * | 2023-07-21 | 2023-10-27 | 武汉熠腾科技有限公司 | Quick loading method and system for oversized surface number model |
| WO2023236804A1 (en) * | 2022-06-09 | 2023-12-14 | 北京新唐思创教育科技有限公司 | Model transformation method and apparatus, device and medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236804A1 (en) * | 2022-06-09 | 2023-12-14 | 北京新唐思创教育科技有限公司 | Model transformation method and apparatus, device and medium |
| CN116958433A (en) * | 2023-07-21 | 2023-10-27 | 武汉熠腾科技有限公司 | Quick loading method and system for oversized surface number model |
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