CN110992485B - GIS map three-dimensional model azimuth display method and device and GIS map - Google Patents
GIS map three-dimensional model azimuth display method and device and GIS map Download PDFInfo
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Abstract
The invention provides a GIS map three-dimensional model azimuth display method, a device and a GIS map, when a user uses the GIS map, a corresponding three-dimensional laser scanner azimuth is obtained through an original azimuth of a current view in the three-dimensional model, and the current azimuth is displayed through the three-dimensional laser scanner azimuth, so that the display of the azimuth of the current view is realized.
Description
Technical Field
The invention relates to the technical field of map data processing, in particular to a GIS map three-dimensional model azimuth display method and device and a GIS map.
Background
Based on one of the modeling modes of rapid modeling of laser point cloud, the general processing flow of rapid modeling of point cloud:
1. acquiring original point cloud and holographic image data through a three-dimensional laser scanner, and managing the output point cloud and holographic image data in an engineering mode;
2. original point cloud pretreatment: splicing, denoising, classifying, filtering and the like are carried out on the original point cloud, and preprocessed point cloud data is output;
3. registering the point cloud with the panorama: associating the three-dimensional point cloud with the holographic image, automatically registering and mapping, and outputting image point cloud data;
4. three-dimensional modeling based on image point cloud:
however, in the prior art, when a user uses the three-dimensional modeling obtained by the construction, the azimuth angle of the current view cannot be obtained.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a method and a device for displaying a three-dimensional model azimuth of a GIS map and the GIS map, so as to display the azimuth of the current view of the user to the user.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
a GIS map three-dimensional model azimuth display method comprises the following steps:
acquiring coordinate information corresponding to laser point clouds at the middle position of a current view in a three-dimensional model, wherein the three-dimensional model is constructed based on the laser point clouds acquired by at least two three-dimensional laser scanners;
acquiring an original azimuth angle of the laser point cloud based on the coordinate information of the laser point cloud;
and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the original azimuth angle.
Optionally, in the method for displaying the three-dimensional model azimuth of the GIS map, before acquiring coordinate information corresponding to the point cloud at the middle position of the current view, the method further includes:
setting the three-dimensional model in a preset three-dimensional coordinate system so that each laser point cloud has a three-dimensional coordinate and an original azimuth;
calculating to obtain a three-dimensional laser scanner azimuth angle corresponding to each three-dimensional laser scanner and an original azimuth angle set corresponding to the three-dimensional laser scanner azimuth angle based on the coordinate information of the laser point cloud corresponding to each three-dimensional laser scanner in the three-dimensional coordinate system;
and establishing a mapping relation between the three-dimensional laser scanner identifier corresponding to the three-dimensional laser scanner, the azimuth angle of the three-dimensional laser scanner and the original azimuth angle set.
Optionally, in the method for displaying the three-dimensional model azimuth of the GIS map, the acquiring and displaying the azimuth of the three-dimensional laser scanner corresponding to the original azimuth includes:
judging an original azimuth angle set to which the original azimuth angle belongs;
acquiring a three-dimensional laser scanner identifier corresponding to an original azimuth set to which the original azimuth belongs;
and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the three-dimensional laser scanner identifier.
A GIS map three-dimensional model azimuth display device, comprising:
the view data acquisition unit is used for acquiring coordinate information corresponding to the laser point cloud at the middle position of the current view in a three-dimensional model, wherein the three-dimensional model is constructed based on the laser point clouds acquired by at least two three-dimensional laser scanners;
the azimuth acquisition unit is used for acquiring an original azimuth of the laser point cloud based on the coordinate information of the laser point cloud; and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the original azimuth angle.
Optionally, in the above device for displaying three-dimensional model azimuth of GIS map, the device further includes:
azimuth configuration unit for:
setting the three-dimensional model in a preset three-dimensional coordinate system so that each laser point cloud has a three-dimensional coordinate and an original azimuth;
calculating to obtain a three-dimensional laser scanner azimuth angle corresponding to each three-dimensional laser scanner and an original azimuth angle set corresponding to the three-dimensional laser scanner azimuth angle based on the coordinate information of the laser point cloud corresponding to each three-dimensional laser scanner in the three-dimensional coordinate system;
and establishing a mapping relation between the three-dimensional laser scanner identifier corresponding to the three-dimensional laser scanner, the azimuth angle of the three-dimensional laser scanner and the original azimuth angle set.
Optionally, in the above device for displaying a three-dimensional model azimuth of a GIS map, the azimuth acquisition unit is specifically configured to, when acquiring and displaying an azimuth of a three-dimensional laser scanner corresponding to the original azimuth:
judging an original azimuth angle set to which the original azimuth angle belongs;
acquiring a three-dimensional laser scanner identifier corresponding to an original azimuth set to which the original azimuth belongs;
and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the three-dimensional laser scanner identifier.
A GIS map, comprising:
the GIS map three-dimensional model azimuth display device according to any one of the above.
Based on the technical scheme, in the scheme provided by the embodiment of the invention, when a user uses a GIS map three-dimensional model, the corresponding three-dimensional laser scanner azimuth angle is obtained through the original azimuth angle of the current view in the three-dimensional model, and the current azimuth angle is displayed through the three-dimensional laser scanner azimuth angle, so that the display of the azimuth angle of the current view is realized.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a method for displaying a three-dimensional model orientation of a GIS map according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a GIS map three-dimensional model azimuth display device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Aiming at the problem that the direction angle of the current view cannot be acquired in the prior art, the application discloses a GIS map three-dimensional model azimuth display method, and referring to fig. 1, the method can comprise the following steps:
step S101: acquiring coordinate information corresponding to a laser point cloud at the middle position of the current view in a three-dimensional model;
the three-dimensional model is a three-dimensional model constructed based on laser point clouds acquired by at least two three-dimensional laser scanners, and before executing the scheme disclosed in the application, the three-dimensional model is constructed based on the laser point clouds acquired by the three-dimensional laser scanners in advance, for example, laser point cloud data are acquired by an acquisition vehicle and are modeled by the laser point cloud data, wherein the acquisition vehicle acquires the laser point cloud data by a plurality of three-dimensional laser scanners uniformly arranged on the acquisition vehicle;
in this step, when the user uses the GIS map, the laser point cloud at the middle position of the user's current view is taken as the reference point cloud.
Step S102: acquiring an original azimuth angle of the laser point cloud based on the coordinate information of the laser point cloud;
in this step, the three-dimensional model is preset in a three-dimensional coordinate system, each laser point cloud corresponds to a three-dimensional coordinate in the three-dimensional coordinate system, and an original azimuth angle corresponding to the laser point cloud can be obtained through the three-dimensional coordinate, wherein the original azimuth angle refers to an azimuth angle of the laser point cloud in the three-dimensional coordinate system.
In the step, the coordinates of the reference point cloud in the three-dimensional coordinate system are obtained, and the azimuth angle of the reference point cloud in the three-dimensional coordinate system is obtained through the coordinates, and is recorded as the original azimuth angle of the reference point cloud, wherein the reference point cloud refers to the laser point cloud in the step;
step S103: acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the original azimuth angle;
in this step, after the original azimuth angle is determined, based on a preset mapping relationship between the original azimuth angle and the azimuth angle of the three-dimensional laser scanner, the azimuth angle of the three-dimensional laser scanner corresponding to the original azimuth angle is obtained, and the azimuth angle corresponding to the current view is intuitively displayed through the azimuth angle of the three-dimensional laser scanner.
Through the scheme disclosed by the embodiment of the application, when a user uses a GIS map three-dimensional model, the corresponding three-dimensional laser scanner azimuth angle is obtained through the original azimuth angle of the current view in the three-dimensional model, and the current azimuth angle is displayed through the three-dimensional laser scanner azimuth angle, so that the display of the azimuth angle of the current view is realized.
Further, in the technical solution disclosed in the foregoing embodiment of the present application, before acquiring coordinate information corresponding to the point cloud at the middle position of the current view, the method further includes:
setting the three-dimensional model in a preset three-dimensional coordinate system so that each laser point cloud has a three-dimensional coordinate and an original azimuth;
calculating to obtain a three-dimensional laser scanner azimuth angle corresponding to each three-dimensional laser scanner and an original azimuth angle set corresponding to the three-dimensional laser scanner azimuth angle based on the coordinate information of the laser point cloud corresponding to each three-dimensional laser scanner in the three-dimensional coordinate system;
and establishing a mapping relation between the three-dimensional laser scanner identifier corresponding to the three-dimensional laser scanner, the azimuth angle of the three-dimensional laser scanner and the original azimuth angle set.
The process is generally summarized as: three-dimensional modeling and azimuth distribution;
the three-dimensional modeling includes: and acquiring laser point cloud data acquired by an acquisition vehicle, and modeling through the laser point cloud data.
The azimuth assignment includes: placing a three-dimensional model automatically modeled by laser point clouds in a three-dimensional coordinate system, each laser point cloud having a three-dimensional coordinate (x, y, z) and each laser point cloud having an original azimuth within the three-dimensional coordinate system.
In this application, taking the three-dimensional laser scanner of the collection vehicle as 12 uniformly distributed three-dimensional laser scanners as an example, taking each 22.5 ° part as 12 parts (360 °/12=22.5°), marking the three-dimensional laser scanner corresponding to the several directions of 11.25 ° +22.5° (n=0, 1,2,3, …), respectively numbering as n (n=1, 2,3, …), and marking the original azimuth of the three-dimensional laser scanner identifier with the number of n+1 as: n×22.5° to (n+1) 22.5 °, i.e., when the original azimuth angle of the laser point cloud in the middle of the view is between n×22.5 ° (n+1) 22.5 ° (n=0, 1,2,3, …), then a three-dimensional laser scanner numbered n+1 is selected.
Further, in the technical solution disclosed in the embodiment of the present application, the acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the original azimuth angle may specifically include:
judging an original azimuth angle set to which the original azimuth angle belongs, wherein the original azimuth angle set is marked as 'n x 22.5 degrees to (n+1) 22.5 degrees' in the upper position; acquiring a three-dimensional laser scanner identifier corresponding to an original azimuth set to which the original azimuth belongs; and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the three-dimensional laser scanner identifier.
Corresponding to the method, the embodiment discloses a three-dimensional model azimuth display device of a GIS map, and specific working contents of each unit in the device are disclosed, please refer to the contents of the method embodiment.
The three-dimensional GIS map model azimuth display device provided by the embodiment of the invention is described below, and the three-dimensional GIS map model azimuth display device described below and the three-dimensional GIS map model azimuth display method described above can be correspondingly referred to each other.
Referring to fig. 2, the GIS map three-dimensional model azimuth display device disclosed in the present application may include:
a view data acquisition unit 100 and an azimuth acquisition unit 200;
the view data acquisition unit 100 is configured to acquire coordinate information corresponding to a laser point cloud at a middle position of a current view in a three-dimensional model, where the three-dimensional model is a three-dimensional model constructed based on the laser point clouds acquired by at least two three-dimensional laser scanners;
an azimuth acquisition unit 200, configured to acquire an original azimuth of the laser point cloud based on coordinate information of the laser point cloud; and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the original azimuth angle.
Corresponding to the above method, the above device further comprises:
azimuth configuration unit for:
setting the three-dimensional model in a preset three-dimensional coordinate system so that each laser point cloud has a three-dimensional coordinate and an original azimuth;
calculating to obtain a three-dimensional laser scanner azimuth angle corresponding to each three-dimensional laser scanner and an original azimuth angle set corresponding to the three-dimensional laser scanner azimuth angle based on the coordinate information of the laser point cloud corresponding to each three-dimensional laser scanner in the three-dimensional coordinate system;
and establishing a mapping relation between the three-dimensional laser scanner identifier corresponding to the three-dimensional laser scanner, the azimuth angle of the three-dimensional laser scanner and the original azimuth angle set.
Corresponding to the method, the azimuth acquisition unit is specifically configured to, when acquiring and displaying the azimuth of the three-dimensional laser scanner corresponding to the original azimuth:
judging an original azimuth angle set to which the original azimuth angle belongs;
acquiring a three-dimensional laser scanner identifier corresponding to an original azimuth set to which the original azimuth belongs;
and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the three-dimensional laser scanner identifier.
Corresponding to the device, the application also discloses a GIS map, and the GIS map can comprise the GIS map three-dimensional model azimuth display device according to any one of the embodiments.
For convenience of description, the above system is described as being functionally divided into various modules, respectively. Of course, the functions of each module may be implemented in the same piece or pieces of software and/or hardware when implementing the present invention.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for a system or system embodiment, since it is substantially similar to a method embodiment, the description is relatively simple, with reference to the description of the method embodiment being made in part. The systems and system embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
It is further noted that 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. 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 invention. Thus, the present invention 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 (7)
1. The GIS map three-dimensional model azimuth display method is characterized by comprising the following steps of:
setting the three-dimensional model in a preset three-dimensional coordinate system so that each laser point cloud has a three-dimensional coordinate and an original azimuth;
acquiring coordinate information corresponding to laser point clouds at the middle position of a current view in a three-dimensional model, wherein the three-dimensional model is constructed based on the laser point clouds acquired by at least two three-dimensional laser scanners; acquiring an original azimuth angle of the laser point cloud based on the coordinate information of the laser point cloud;
and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the original azimuth angle.
2. The method for displaying the three-dimensional model azimuth of the GIS map according to claim 1, wherein before acquiring the coordinate information corresponding to the point cloud at the middle position of the current view, further comprises:
calculating to obtain a three-dimensional laser scanner azimuth angle corresponding to each three-dimensional laser scanner and an original azimuth angle set corresponding to the three-dimensional laser scanner azimuth angle based on the coordinate information of the laser point cloud corresponding to each three-dimensional laser scanner in the three-dimensional coordinate system;
and establishing a mapping relation between the three-dimensional laser scanner identifier corresponding to the three-dimensional laser scanner, the azimuth angle of the three-dimensional laser scanner and the original azimuth angle set.
3. The GIS map three-dimensional model azimuth display method according to claim 2, wherein the acquiring and displaying the three-dimensional laser scanner azimuth corresponding to the original azimuth includes:
judging an original azimuth angle set to which the original azimuth angle belongs;
acquiring a three-dimensional laser scanner identifier corresponding to an original azimuth set to which the original azimuth belongs;
and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the three-dimensional laser scanner identifier.
4. The utility model provides a GIS map three-dimensional model position display device which characterized in that includes:
azimuth configuration unit for:
setting the three-dimensional model in a preset three-dimensional coordinate system so that each laser point cloud has a three-dimensional coordinate and an original azimuth;
the view data acquisition unit is used for acquiring coordinate information corresponding to the laser point cloud at the middle position of the current view in a three-dimensional model, wherein the three-dimensional model is constructed based on the laser point clouds acquired by at least two three-dimensional laser scanners; the azimuth acquisition unit is used for acquiring an original azimuth of the laser point cloud based on the coordinate information of the laser point cloud; and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the original azimuth angle.
5. The GIS map three-dimensional model orientation display apparatus according to claim 4, further comprising:
calculating to obtain a three-dimensional laser scanner azimuth angle corresponding to each three-dimensional laser scanner and an original azimuth angle set corresponding to the three-dimensional laser scanner azimuth angle based on the coordinate information of the laser point cloud corresponding to each three-dimensional laser scanner in the three-dimensional coordinate system;
establishing the correspondence of the three-dimensional laser scanner
The three-dimensional laser scanner identifies a mapping relationship with the three-dimensional laser scanner azimuth and the original azimuth set.
6. The GIS map three-dimensional model azimuth display device according to claim 5, wherein the azimuth acquisition unit is configured to, when acquiring and displaying the three-dimensional laser scanner azimuth corresponding to the original azimuth:
judging an original azimuth angle set to which the original azimuth angle belongs;
acquiring a three-dimensional laser scanner identifier corresponding to an original azimuth set to which the original azimuth belongs;
and acquiring and displaying the azimuth angle of the three-dimensional laser scanner corresponding to the three-dimensional laser scanner identifier.
7. A GIS map, comprising:
the GIS map three-dimensional model azimuth display device according to any one of claims 4 to 6.
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