CN118135137B - Real scene three-dimensional construction method, system and storage medium for terrain complex area right determination - Google Patents
Real scene three-dimensional construction method, system and storage medium for terrain complex area right determination Download PDFInfo
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Abstract
The invention relates to the technical field of natural resource right determination, and discloses a real scene three-dimensional construction method, a system and a storage medium for a terrain complex region right determination. According to the invention, the pre-determined weight area is inspected to obtain the topographic information thereof, then a flight view acquisition route is formulated according to the topographic information, and meanwhile, corresponding distribution and control points are arranged in the pre-determined weight area to serve as characteristic reference points of topographic features and the like of the pre-determined weight area, then the pre-determined weight area is subjected to two-dimensional view finding according to the flight view acquisition route, and then three-dimensional data construction live-action is performed by combining the topographic features and the like of the pre-determined weight area actually obtained in the distribution and control points, so that high-precision live-action three-dimensional construction of the pre-determined weight area is met. The method and the device effectively solve the defects that in the prior art, acquisition efficiency of real three-dimensional data of mountain areas with complex terrains is low and accuracy is insufficient.
Description
Technical Field
The invention relates to the technical field of natural resource right determination, in particular to a real scene three-dimensional construction method, a system and a storage medium for determining right in a terrain complex area.
Background
At present, the unified registration and validation of natural resources is being carried out on a large scale throughout the country, and the natural resource registration is mainly carried out by the working modes of outside industry data collection, inside industry data analysis and outside industry data verification. From the viewpoint of natural resource right-determining registration data, the development is mostly carried out based on remote sensing images and plane pattern spots. In the aspect of the management and application of the real weight achievements of natural resources, the current main achievements are mainly to carry out real weight registration on two-dimensional vector data and drawing data, the management platform of the achievements is mainly used for carrying out unified management on real estate unified registration information platforms, the platforms are mainly used for carrying out management and application in a two-dimensional map mode, most of the platforms only have simple plane thematic maps, the data utilization rate is low, the analysis functions of three-dimensional space layers are limited, such as inundation analysis, geological analysis and visibility analysis, are difficult to realize in two-dimensional data, the real resource unified real weight registration related data achievements are not visual enough, the space information is very abstract, and the large-scale popularization is impossible.
At present, in the prior art, when the real-scene three-dimensional data is acquired in a mountain area with complex terrain, the resolution ratio of the inclined aerial image is not uniform due to serious fluctuation of the terrain, so that the acquired data of the mountain area with complex terrain is inaccurate easily, and the acquisition efficiency and the precision of the real-scene three-dimensional data of the mountain area with complex terrain are low.
Disclosure of Invention
The invention aims to solve the defects of low acquisition efficiency and insufficient precision of real-scene three-dimensional data of a mountain area with complex terrain in the prior art, and provides a real-scene three-dimensional construction method, a real-scene three-dimensional construction system and a real-scene three-dimensional storage medium for determining the right of the mountain area with complex terrain.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The invention provides a real scene three-dimensional construction method for determining rights in a terrain complex area, which comprises the following steps:
the method comprises the steps of obtaining terrain information of a pre-determined right area and determining flight route information of the pre-determined right area;
according to the topographic information of the pre-determined right area and combining the flight route information of the pre-determined right area, setting a plurality of distribution points in the pre-determined right area, and acquiring the characteristic identification information of the pre-determined right area by using the distribution points;
according to the flight route information of the pre-determined right area and the topography information of the pre-determined right area, performing image acquisition on the pre-determined right area to obtain the image information of the pre-determined right area;
Processing the image information of the pre-determined right area according to the flight route information of the pre-determined right area to obtain the image contour information of the pre-determined right area;
Acquiring three-dimensional contour construction information of the pre-determined weight region according to the image contour information of the pre-determined weight region and combining the characteristic identification information of the pre-determined weight region;
And constructing a three-dimensional live-action model of the pre-determined right area according to the three-dimensional contour construction information of the pre-determined right area and the flight path information of the pre-determined right area.
Preferably, the method for obtaining the image information of the predetermined weight region includes:
determining a first scenery route according to the flight route information of the predetermined right area;
Setting at least one auxiliary scenery taking route according to the topographic information of the pre-determined right area and combining with the first scenery taking route;
According to the topographic information of the pre-determined right area, utilizing a first scenery route to acquire images of the pre-determined right area, and obtaining first image information of the pre-determined right area;
And carrying out integral super-region acquisition on the pre-determined right region according to the auxiliary scenery taking route to obtain second image information of the pre-determined right region.
Preferably, the method for acquiring the three-dimensional contour construction information of the pre-determined right area includes:
according to the topographic information of the pre-determined right area and in combination with the first scenery route, identifying and extracting the first image information of the pre-determined right area to obtain the characteristic information of the first image information;
according to the topographic information of the pre-determined right area and in combination with the auxiliary scenery taking route, identifying and extracting the second image information of the pre-determined right area to obtain the characteristic information of the second image information;
according to the terrain information of the pre-determined right area, combining an auxiliary acquisition route and a first acquisition route, and matching the characteristic information of the first image information with the characteristic information of the second image information to obtain the planar terrain characteristic information of the pre-determined right area;
And according to the characteristic identification information of the pre-determined weight region and by combining the planar topography characteristic information of the pre-determined weight region, obtaining the three-dimensional contour construction information of the pre-determined weight region.
Preferably, the feature identification information of the pre-determined right area includes:
one or more of the topography features, the ground height, the longitude and latitude at the plurality of the control points are combined.
Preferably, the method further comprises:
determining at least one terrain type classification information in the pre-determined weight area according to the terrain information of the pre-determined weight area;
According to the terrain type classification information, combining the image information of the pre-determined right area, carrying out terrain type recognition on the three-dimensional live-action model of the pre-determined right area to obtain at least one terrain type image contour information;
according to the image information of the pre-determined weight area, and combining with a three-dimensional live-action model of the pre-determined weight area, respectively extracting coordinate information of each terrain type image contour;
Respectively constructing polygonal grids of each terrain type image contour according to the coordinate information of each terrain type image contour;
And respectively acquiring the duty ratio coefficient of each terrain type image contour in the predetermined weight area according to the polygonal grid of each terrain type image contour.
Preferably, the polygonal mesh includes: triangular mesh.
Preferably, the method for respectively acquiring the duty ratio coefficients of each terrain type image contour in the pre-determined weight area comprises the following steps:
According to the coordinate information of each terrain type image contour, a datum point is arbitrarily selected on the three-dimensional real-scene model of the pre-determined right area and/or the image information of the pre-determined right area;
Constructing triangular meshes by taking the datum points as reference points to obtain triangular mesh distribution diagrams of the image contours of each terrain type in the pre-determined weight area;
Calculating area information of each terrain type image contour in the pre-determined weight area according to the triangular mesh distribution map of each terrain type image contour;
And obtaining the duty ratio coefficient of each terrain type image contour in the pre-determined weight area according to the area information of each terrain type image contour in the pre-determined weight area.
Preferably, the method for respectively acquiring the duty ratio coefficients of each terrain type image contour in the pre-determined weight area further comprises the following steps:
Let the datum point in the contour of a certain type of terrain image be A, if two points B, C exist in the contour of the current type of terrain image, the area of triangle ABC The method comprises the following steps:
Wherein, ,
Wherein,The straight line distance from the point A to the point B is the straight line distance; The straight line distance from the point A to the point C is the straight line distance; Is the straight line distance from the point B to the point C.
The present invention provides in a second aspect a real-scene three-dimensional construction system for determining rights in a terrain complex area, the construction system employing a real-scene three-dimensional construction method for determining rights in a terrain complex area as described in any one of the first aspects.
The beneficial effects of the invention are as follows:
according to the invention, the pre-determined weight area is inspected to obtain the topographic information thereof, then a flight view acquisition route is formulated according to the topographic information, and meanwhile, corresponding distribution and control points are arranged in the pre-determined weight area to serve as characteristic reference points of topographic features and the like of the pre-determined weight area, then the pre-determined weight area is subjected to two-dimensional view finding according to the flight view acquisition route, and then three-dimensional data construction live-action is performed by combining the topographic features and the like of the pre-determined weight area actually obtained in the distribution and control points, so that high-precision live-action three-dimensional construction of the pre-determined weight area is met. The method and the device effectively solve the defects that in the prior art, acquisition efficiency of real three-dimensional data of mountain areas with complex terrains is low and accuracy is insufficient.
Drawings
FIG. 1 is an overall flow chart of a real-scene three-dimensional construction method for determining rights in a terrain complex area, which is provided by the embodiment of the invention;
fig. 2 is a first partial flowchart of a real-scene three-dimensional construction method for determining rights in a terrain complex area provided in an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. 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.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to fig. 1 to 2, in order to solve the above-mentioned drawbacks of the prior art, such as low collection efficiency and insufficient accuracy of real-scene data of a mountain area with complex terrain, the present invention provides a real-scene three-dimensional construction method for determining the right of a terrain complex area. The method and the device effectively solve the defects that in the prior art, acquisition efficiency of real three-dimensional data of mountain areas with complex terrains is low and accuracy is insufficient.
The invention provides a real scene three-dimensional construction method for determining rights in a terrain complex area, which adopts an unmanned plane to perform oblique photography and scenery, and specifically comprises the following steps:
The terrain information of the pre-determined right area can be obtained in advance in a wired or wireless mode (such as field investigation or existing geographic information and the like), and then the flight route information of the pre-determined right area is determined uniformly according to the pre-determined right terrain information; the unmanned aerial vehicle inclined photography ground-preventing flight technology is adopted, and the inclined image acquisition of the predetermined right area is carried out according to the relative altitude numerical value automatic planning route, so that the actual relative altitude numerical value is ensured not to change along with the fluctuation of the ground surface.
According to the topographic information of the pre-determined right area and combining the flight route information of the pre-determined right area, setting a plurality of distribution points in the pre-determined right area, and acquiring the characteristic identification information of the pre-determined right area by using the distribution points; the method comprises the steps of firstly arranging distribution points in the pre-determined right area in advance along a flight view collecting route of the pre-determined right area, and knowing characteristic identification information (such as geographic position, geographic height, topography, longitude and latitude and the like) of the distribution points in the pre-determined right area by utilizing the distribution points so as to facilitate the follow-up definition of the current topography characteristic of the pre-determined right area according to the distribution points serving as reference points of the pre-determined right area.
After the early-stage preparation work is completed, the unmanned aerial vehicle is utilized to acquire images of the pre-determined right area according to the flight route information of the pre-determined right area and the topographic information of the pre-determined right area, so that the image information of the pre-determined right area is obtained; then, according to the flight route information of the pre-determined right area, splicing the image information of the pre-determined right area to obtain the image contour information of the pre-determined right area; the method for performing the stitching processing on the image information of the pre-determined right area can adopt an SFM (Structure-From-Motion) algorithm to extract feature points of the image information of the pre-determined right area acquired by the unmanned aerial vehicle, and then perform image stitching according to the image feature information and the topographic information of the pre-determined right area so as to obtain the image contour information of the pre-determined right area. And then
Acquiring three-dimensional contour construction information of the pre-determined weight region according to the image contour information of the pre-determined weight region and combining the characteristic identification information of the pre-determined weight region; the three-dimensional real-scene model of the pre-determined right area is built according to the characteristic identification information (such as geographic position, geographic height, topography, longitude and latitude and the like) arranged at the control point in the pre-determined right area and by combining the three-dimensional contour construction information of the pre-determined right area and the flight route information of the pre-determined right area. The method and the device are used for accurately constructing the real three-dimensional model of the pre-determined weight area, and guaranteeing the construction efficiency of the real three-dimensional model of the pre-determined weight area.
In this embodiment, in order to ensure the integrity of the acquisition of the image information of the predetermined weight area, the method for acquiring the image information of the predetermined weight area includes: determining a first scenery route according to the flight route information of the predetermined right area; then, according to the terrain information of the pre-determined weight area and in combination with the first scenery taking route, setting at least one auxiliary scenery taking route; according to the topographic information of the pre-determined right area, utilizing a first scenery route to acquire images of the pre-determined right area, and obtaining first image information of the pre-determined right area; and carrying out integral super-region acquisition on the pre-determined right region according to the auxiliary scenery taking route to obtain second image information of the pre-determined right region. The second image information of the pre-determined right area comprises the first image information of the pre-determined right area, so that multiple effective basis is provided for the follow-up three-dimensional live-action modeling. That is, in order to ensure the integrity of the image acquisition of the pre-determined right area by the unmanned aerial vehicle, a relative altitude is required to be expanded outside the boundary range of the side direction area of the route according to the flight route information of the pre-determined right area, and at least one auxiliary acquisition route is arranged so as to ensure that the viewing lens of the unmanned aerial vehicle can cover the full pre-determined right area. In this embodiment, in order to ensure the accuracy and the data coverage of the later processing of the viewfinder image of the unmanned aerial vehicle, the course overlapping degree of the auxiliary scenery taking course and the first scenery taking course is 80%, and the side overlapping degree is 75%.
In this embodiment, in order to facilitate understanding how to construct a three-dimensional contour from the first image information and the second image information of the predetermined weight region, the method for acquiring the three-dimensional contour construction information of the predetermined weight region includes:
In this step, in order to facilitate the subsequent unified data processing of the first image information and the second image information of the predetermined right area, it is necessary to check whether the overall brightness, color tone, shadow specific gravity, and inclination angle of the images of the first image information and the second image information of the predetermined right area are too large, and if there is a large difference, it is necessary to perform re-flight. After the first image information and the second image information of the pre-determined right area are processed, the first image information of the pre-determined right area is identified and extracted according to the topographic information of the pre-determined right area and by combining with a first scenery route, and the characteristic information of the first image information is obtained; respectively identifying and extracting second image information of the pre-determined right area according to the topographic information of the pre-determined right area and combining an auxiliary scenery taking route to obtain characteristic information of the second image information; the method comprises the steps of extracting feature points from first image information and second image information of a pre-determined right area after processing by adopting an SFM (structure-from-motion) algorithm, and then constructing three connection points according to the feature points so as to realize identification and matching of the image internal features of the first image information and the second image information of the pre-determined right area respectively, so that the generation of the image plane topography features of the pre-determined right area is ensured. The characteristic information of the first image information and the characteristic information of the second image information are matched according to the terrain information of the pre-determined right area and by combining an auxiliary acquisition route and a first acquisition route, so that the plane terrain characteristic information (the image plane terrain characteristic of the pre-determined right area) of the pre-determined right area is obtained; and then, according to the characteristic identification information of the pre-determined weight area and by combining the planar topography characteristic information of the pre-determined weight area, obtaining the three-dimensional contour construction information of the pre-determined weight area. At this time, the feature identification information (such as topography feature, ground height and longitude and latitude) of the pre-determined right area where the distribution point is arranged in the pre-determined right area can be obtained by using the distribution point, namely the feature identification information of the pre-determined right area comprises: one or more of the topography features, the ground height, the longitude and latitude at the position of the plurality of distributed control points are combined. In this embodiment, in order to enable the information of the position of the control point to be framed by the unmanned aerial vehicle, the control point is selected on an obvious ground object with clear images, the intersection points of fine linear ground objects with good intersection angles and the centers of point-shaped ground objects are generally selected, and the intersection points of arc-shaped ground objects, shadows and linear ground objects with acute intersection angles are not used as the targets of the laying points. In addition, the height precision is considered when the control points are distributed, and the control points are selected on the targets with small height change (targets with small gradient, large area and easy height alignment). When laying the control point on the edge of the ridge and the ground object higher than the ground, the required quantity injection ratio is up to 0.01m, and the point pricks are marked on the ridge, under the ridge or at the top and bottom of the ground object. Namely, marking the layout height, the topography and the like of the layout control points.
Preferably, in order to facilitate the validation of natural resources according to the three-dimensional live-action model of the pre-validation area, the construction method further includes:
Determining at least one terrain type classification information in the pre-determined weight area according to the terrain information of the pre-determined weight area; the type of the topography of the pre-determined weight area is obtained in advance according to the actual exploration condition, such as a arbor area, a shrub area, a dry land area, a lake area and the like. Then, according to the terrain type classification information, combining the image information of the pre-determined weight area, carrying out terrain type image recognition on the three-dimensional live-action model of the pre-determined weight area to obtain at least one terrain type image contour information in the pre-determined weight area; then according to the image information of the pre-determined weight area, and combining with the three-dimensional real scene model of the pre-determined weight area, respectively extracting the coordinate information (including plane coordinates and/or space coordinates) of each terrain type image contour; then, respectively constructing polygonal grids of the image outlines of each terrain type according to the coordinate information of the image outlines of each terrain type; and respectively acquiring the duty ratio coefficient of each terrain type image contour in the predetermined weight area according to the polygonal grid of each terrain type image contour. In this embodiment, the polygonal mesh includes: triangular mesh. The method comprises the steps of constructing triangular grids according to coordinate information of each terrain type image contour in a pre-determined weight area, and determining the area size of each terrain type image contour in the pre-determined weight area by utilizing the triangular grids so as to determine the total amount of each terrain type image contour in the pre-determined weight area.
In this embodiment, in order to facilitate understanding how to determine an area according to the profile information of each terrain type image in the predetermined weight area, the following description will be given here, where the method for respectively acquiring the duty ratio coefficients of each terrain type image profile in the predetermined weight area includes: according to the coordinate information of each terrain type image contour, a datum point is arbitrarily selected on the three-dimensional real-scene model of the pre-determined right area and/or the image information of the pre-determined right area; constructing triangular meshes by taking the datum points as reference points to obtain triangular mesh distribution diagrams of the image contours of each terrain type in the pre-determined weight area; calculating area information of each terrain type image contour in the pre-determined weight area according to the triangular mesh distribution map of each terrain type image contour; and obtaining the duty ratio coefficient of each terrain type image contour in the pre-determined weight area according to the area information of each terrain type image contour in the pre-determined weight area.
In this embodiment, in order to facilitate understanding how to obtain the area information of each of the terrain-type image contours in the predetermined weight region based on the triangular mesh, the method for obtaining the duty ratio coefficient of each of the terrain-type image contours in the predetermined weight region, respectively, further includes:
when determining area information of each terrain type image contour in a predetermined weight area by using a predetermined weight plane image, the plane image sets a reference point in a certain terrain type image contour as A, and when two points B and C exist in the current terrain type image contour, the area of triangle ABC The method comprises the following steps:
Wherein, ,
Wherein,The straight line distance from the point A to the point B is the straight line distance; The straight line distance from the point A to the point C is the straight line distance; Is the straight line distance from the point B to the point C.
That is, in this embodiment, the coordinates of point a are (x 1, y 1), the coordinates of point B are (x 2, y 2), and the coordinates of point C are (x 3, y 3), at this time:
,
,
。
When area information of each terrain type image contour in a predetermined weight area is determined by using a predetermined weight real-scene three-dimensional model, point A coordinates are set to be (x 1, y1, z 1), point B coordinates are set to be (x 2, y2, z 2), and point C coordinates are set to be (x 3, y3, z 3), wherein:
,
,
。
The present invention provides in a second aspect a real-scene three-dimensional construction system for determining rights in a terrain complex area, the construction system employing a real-scene three-dimensional construction method for determining rights in a terrain complex area as described in any one of the first aspects. In this embodiment, the building system further includes: and a aerial photography platform. The aerial photographing platform adopts a flying horse D2000 unmanned aerial vehicle, and the aerial photographing instrument is a D2000 aerial photographing instrument with a D-OP 3000. The unmanned aerial vehicle can operate for 74 minutes, the whole unmanned aerial vehicle is suitable for individual operation, the modularized design and the disassembly are simple, the whole unmanned aerial vehicle is connected through a wireless cable, the assembly is convenient and quick, the exclusive advantage patent is that the unmanned aerial vehicle flies high, the real terrain following is realized according to the relief of the terrain, the uniform height is always kept relative to the ground, and the ground-imitating flight is realized. In addition, the predetermined right area needs to be subjected to an in-situ survey before the operation is performed on the predetermined right area. The work of taking off and landing place selection, mountain height confirmation and the like is completed through the stepping investigation. After each preparation work is completed, the aviation operation is started. After the safety of the take-off site and the upper air is ensured, the take-off unmanned aerial vehicle can be started. After the flight operation on the same day is completed, the data arrangement and inspection work is completed.
The present invention provides in a third aspect a computer-readable medium having stored thereon a computer program, wherein the program when executed by a processor implements a terrain-complex-area-right-for-use live-action three-dimensional construction method as set forth in any one of the first aspects.
In some embodiments, the build system may communicate using any currently known or future developed network protocol, such as HTTP (Hyper Text Transfer Protocol ), and may be interconnected with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), the internet (e.g., the internet), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future developed networks.
The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a Complex Programmable Logic Device (CPLD), and the like.
A third aspect of the present invention provides a computer-readable medium having stored thereon a computer program, wherein the program when executed by a processor implements a realistic three-dimensional construction method for terrain complex area validation as described in any of the first aspects. The computer readable medium in this embodiment may write computer program code for performing the operations of some embodiments of the present disclosure in one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In particular, according to some embodiments of the present disclosure, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, some embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flow chart.
A fourth aspect of the present invention provides an electronic device comprising: one or more processors; a storage device having one or more programs stored thereon; the one or more programs, when executed by the one or more processors, cause the one or more processors to implement a terrain-complex area validation method as described in the first aspect. Wherein the computer readable medium may be contained in the electronic device; or may be present alone, i.e. not fitted into the electronic device. The computer-readable medium carries one or more programs which, when executed by the electronic device, enable the electronic device to implement a terrain-complex area authentication live-action three-dimensional construction method as described in the first aspect.
A fifth aspect of the invention provides a computer program product comprising a computer program which, when executed by a processor, implements a real-scene three-dimensional construction method for terrain-complex area validation as described in the first aspect.
The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the invention. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.
Claims (8)
1. A real scene three-dimensional construction method for determining rights in a terrain complex area is characterized by comprising the steps of
The method comprises the following steps:
the method comprises the steps of obtaining terrain information of a pre-determined right area and determining flight route information of the pre-determined right area;
according to the topographic information of the pre-determined right area and combining the flight route information of the pre-determined right area, setting a plurality of distribution points in the pre-determined right area, and acquiring the characteristic identification information of the pre-determined right area by using the distribution points;
according to the flight route information of the pre-determined right area and the topography information of the pre-determined right area, performing image acquisition on the pre-determined right area to obtain the image information of the pre-determined right area;
Processing the image information of the pre-determined right area according to the flight route information of the pre-determined right area to obtain the image contour information of the pre-determined right area;
Acquiring three-dimensional contour construction information of the pre-determined weight region according to the image contour information of the pre-determined weight region and combining the characteristic identification information of the pre-determined weight region;
constructing a three-dimensional live-action model of the pre-determined right area according to the three-dimensional contour construction information of the pre-determined right area and the flight path information of the pre-determined right area;
the method for obtaining the image information of the pre-determined right area comprises the following steps:
determining a first scenery route according to the flight route information of the predetermined right area;
Setting at least one auxiliary scenery taking route according to the topographic information of the pre-determined right area and combining with the first scenery taking route;
According to the topographic information of the pre-determined right area, utilizing a first scenery route to acquire images of the pre-determined right area, and obtaining first image information of the pre-determined right area;
Carrying out integral super-region acquisition on the pre-determined right region according to the auxiliary scenery taking route to obtain second image information of the pre-determined right region;
specifically, the method for acquiring the three-dimensional contour construction information of the pre-determined right area comprises the following steps:
according to the topographic information of the pre-determined right area and in combination with the first scenery route, identifying and extracting the first image information of the pre-determined right area to obtain the characteristic information of the first image information;
according to the topographic information of the pre-determined right area and in combination with the auxiliary scenery taking route, identifying and extracting the second image information of the pre-determined right area to obtain the characteristic information of the second image information;
according to the terrain information of the pre-determined right area, combining an auxiliary acquisition route and a first acquisition route, and matching the characteristic information of the first image information with the characteristic information of the second image information to obtain the planar terrain characteristic information of the pre-determined right area;
And according to the characteristic identification information of the pre-determined weight region and by combining the planar topography characteristic information of the pre-determined weight region, obtaining the three-dimensional contour construction information of the pre-determined weight region.
2. The method for three-dimensional construction of real scenes for determining rights in a terrain complex area according to claim 1, wherein the feature identification information of the pre-determined right area includes:
one or more of the topography features, the ground height, the longitude and latitude at the plurality of the control points are combined.
3. The real-scene three-dimensional construction method for determining authority of a terrain complex area according to any one of claims 1 to 2, further comprising:
determining at least one terrain type classification information in the pre-determined weight area according to the terrain information of the pre-determined weight area;
According to the terrain type classification information, combining the image information of the pre-determined right area, carrying out terrain type recognition on the three-dimensional live-action model of the pre-determined right area to obtain at least one terrain type image contour information;
according to the image information of the pre-determined weight area, and combining with a three-dimensional live-action model of the pre-determined weight area, respectively extracting coordinate information of each terrain type image contour;
Respectively constructing polygonal grids of each terrain type image contour according to the coordinate information of each terrain type image contour;
And respectively acquiring the duty ratio coefficient of each terrain type image contour in the predetermined weight area according to the polygonal grid of each terrain type image contour.
4. A method for three-dimensional construction of a real scene for determining rights in a terrain complex area according to claim 3, wherein said polygonal mesh comprises:
Triangular mesh.
5. The method for three-dimensionally constructing a real scene for determining the authority of a terrain complex area according to claim 4, wherein the method for respectively acquiring the duty ratio coefficients of each terrain type image contour in the predetermined authority area comprises:
According to the coordinate information of each terrain type image contour, a datum point is arbitrarily selected on the three-dimensional real-scene model of the pre-determined right area and/or the image information of the pre-determined right area;
Constructing triangular meshes by taking the datum points as reference points to obtain triangular mesh distribution diagrams of the image contours of each terrain type in the pre-determined weight area;
Calculating area information of each terrain type image contour in the pre-determined weight area according to the triangular mesh distribution map of each terrain type image contour;
And obtaining the duty ratio coefficient of each terrain type image contour in the pre-determined weight area according to the area information of each terrain type image contour in the pre-determined weight area.
6. The method for three-dimensionally constructing a real scene for determining the authority of a terrain complex area according to claim 5, wherein the method for respectively acquiring the duty ratio coefficients of each terrain type image contour in the predetermined authority area further comprises:
Let the datum point in the contour of a certain type of terrain image be A, if two points B, C exist in the contour of the current type of terrain image, the area of triangle ABC The method comprises the following steps:
；
Wherein, ；
Wherein,The straight line distance from the point A to the point B is the straight line distance; The straight line distance from the point A to the point C is the straight line distance; Is the straight line distance from the point B to the point C.
7. A real-scene three-dimensional construction system for determining rights in a terrain complex area, wherein the construction system adopts the real-scene three-dimensional construction method for determining rights in a terrain complex area according to any one of claims 1 to 6.
8. A computer-readable medium, characterized in that a computer program is stored thereon, wherein the program, when executed by a processor, implements a terrain-complex area-right-for-use live-action three-dimensional construction method as claimed in any one of claims 1 to 6.
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| CN112685526B (en) * | 2020-12-31 | 2021-10-08 | 华中科技大学 | WebGIS-based dike-free river channel right-determining demarcation implementation method, server and client |
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| CN114089787A (en) * | 2021-09-29 | 2022-02-25 | 航天时代飞鸿技术有限公司 | Ground three-dimensional semantic map based on multi-machine cooperative flight and construction method thereof |
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