CN117216039B - Method for constructing three-dimensional base of building based on three-dimensional cadastral database - Google Patents
Method for constructing three-dimensional base of building based on three-dimensional cadastral database Download PDFInfo
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Abstract
The invention provides a building three-dimensional base construction method based on a three-dimensional cadastre database, which comprises the following steps: s1, acquiring three-dimensional base data, wherein the three-dimensional base data comprises one or any combination of a digital elevation model, a remote sensing image, a simulation model and oblique photographic data; s2, the three-dimensional base data are uploaded to a three-dimensional cadastre management platform after being processed. The invention can safely upload the three-dimensional base data (digital elevation model, remote sensing image, simulation model, oblique photographic data and the like) of the building to the three-dimensional cadastral management platform, thereby preventing leakage.
Description
Technical Field
The invention relates to the technical field of cadastral information, in particular to a method for constructing a three-dimensional base of a building based on a three-dimensional cadastral database.
Background
A building is an artificial, fixed object relative to the ground. Patent application number 2023100149975, named as a multi-level management method and system of a three-dimensional cadastral database, discloses a multi-level management method and system of the three-dimensional cadastral database, which comprises a storage self-checking module, a user opinion importing module, a storage information acquisition module, a user acquisition module, a storage environment acquisition module, a data processing module, a master control module and an information sending module; the storage information acquisition module acquires storage information of hardware equipment for storing the three-dimensional cadastral database, wherein the storage information comprises total storage information and real-time occupied storage quantity information of the hardware equipment for storing the three-dimensional cadastral database; the storage environment monitoring module is used for collecting and storing the environment information of the hardware equipment of the three-dimensional cadastral database, the environment information comprises environment dust concentration information, environment temperature information and environment humidity information, and the user collecting module is used for collecting the extraction information when a user logs in to the three-dimensional cadastral database to extract the three-dimensional cadastral data and generating user extraction information. The invention can more comprehensively manage the cadastral database. But the data content in the three-dimensional cadastral database is not limited thereto, but also includes three-dimensional base data of a building.
Disclosure of Invention
The invention aims at least solving the technical problems in the prior art, and particularly creatively provides a method for constructing a three-dimensional base of a building based on a three-dimensional cadastral database.
In order to achieve the above object of the present invention, the present invention provides a method for constructing a three-dimensional foundation of a building based on a three-dimensional cadastre database, comprising the steps of:
s1, acquiring three-dimensional base data, wherein the three-dimensional base data comprises one or any combination of Digital Elevation Model (DEM), remote sensing image, simulation model and oblique photographic data;
s2, the three-dimensional base data are uploaded to a three-dimensional cadastre management platform after being processed.
In a preferred embodiment of the present invention, the following steps are included in step S2:
s21, four folders are established, namely a first three-dimensional base folder, a second three-dimensional base folder, a third three-dimensional base folder and a fourth three-dimensional base folder;
the first folder of the three-dimensional base is used for storing digital elevation model data;
the second folder of the three-dimensional base is used for storing remote sensing image data;
the third folder of the three-dimensional base is used for storing simulation model data;
the third folder of the three-dimensional base is used for storing oblique photographic data;
s22, generating a three-dimensional base first folder number, a three-dimensional base second folder number, a three-dimensional base third folder number and a three-dimensional base fourth folder number for the three-dimensional base first folder, the three-dimensional base second folder, the three-dimensional base third folder and the three-dimensional base fourth folder respectively;
s23, processing the digital elevation model data in the step S1 and storing the processed digital elevation model data in a first folder of the three-dimensional base; processing the remote sensing image data in the step S1 and storing the processed remote sensing image data in a second folder of the three-dimensional base; processing the simulation model data in the step S1 and storing the processed simulation model data in a third folder of the three-dimensional base; processing the oblique photographing data in the step S1 and storing the processed oblique photographing data in a fourth folder of the three-dimensional base;
s24, respectively carrying out data compression treatment on the first folder of the three-dimensional base, the second folder of the three-dimensional base, the third folder of the three-dimensional base and the fourth folder of the three-dimensional base, and obtaining a first file package of the three-dimensional base, a second file package of the three-dimensional base, a third file package of the three-dimensional base and a fourth file package of the three-dimensional base after the compression treatment;
s25, uploading the first file package of the three-dimensional base, the second file package of the three-dimensional base, the third file package of the three-dimensional base, the fourth file package of the three-dimensional base and the link mark to the three-dimensional cadastral management platform.
In a preferred embodiment of the present invention, the method for generating the three-dimensional base first folder number in step S22 is as follows:
s221, calculating a first file folder number of the three-dimensional base on the acquired digital elevation model data to obtain the first file folder number of the three-dimensional base; the method for calculating the first folder number of the three-dimensional base comprises the following steps:
foldercode1＝foldercodecalculationway1<folderdata1>
the foldercode1 represents that the obtained digital elevation model data is subjected to three-dimensional base first folder number calculation, and the obtained three-dimensional base first folder number is obtained;
the folcodecodececualrelation 1< > represents a first folder number calculation method of the three-dimensional base; preferably adopting an MD5 digest calculation method;
folderdata1 represents digital elevation model data;
s222, taking the three-dimensional base first folder number as the name of the three-dimensional base first folder;
the method for generating the three-dimensional base second folder number in step S22 is as follows:
s221, calculating a three-dimensional base second folder number of the acquired remote sensing image data to obtain the three-dimensional base second folder number; the calculation method of the second folder number of the three-dimensional base comprises the following steps:
foldercode2＝foldercodecalculationway2<folderdata2>
the foldercode2 represents a three-dimensional base second folder number obtained by calculating the three-dimensional base second folder number of the acquired remote sensing image data;
the folcodecodececualrelation 2< > represents a second folder number calculation method of the three-dimensional base; preferably adopting an MD5 digest calculation method;
folderdata1 represents remote sensing image data;
s222, taking the three-dimensional base first folder number as the name of the three-dimensional base first folder;
the method for generating the third folder number of the three-dimensional base in the step S22 is as follows:
s221, calculating a third folder number of the three-dimensional base on the obtained simulation model data to obtain the third folder number of the three-dimensional base; the calculation method of the third folder number of the three-dimensional base comprises the following steps:
foldercode3＝foldercodecalculationway3<folderdata3>
the foldercode1 represents a third folder number of the three-dimensional base obtained by calculating the third folder number of the three-dimensional base of the obtained simulation model data;
the folcodecodececualrelation 3< > represents a third folder number calculation method of the three-dimensional base; preferably adopting an MD5 digest calculation method;
folderdata3 represents simulation model data;
s222, taking the three-dimensional base third folder number as the name of the three-dimensional base third folder;
the method for generating the third folder number of the three-dimensional base in step S22 is as follows:
s221, calculating a fourth folder number of the three-dimensional base on the acquired oblique photographing data to obtain the fourth folder number of the three-dimensional base; the calculation method of the third folder number of the three-dimensional base comprises the following steps:
foldercode4＝foldercodecalculationway4<folderdata4>
the foldercode1 represents a three-dimensional base fourth folder number obtained by calculating the three-dimensional base fourth folder number of the acquired oblique photographic data;
the folcodecodececualrelation 4< > represents a calculation method of a fourth folder number of the three-dimensional base; preferably adopting an MD5 digest calculation method;
folderdata4 represents oblique photographing data;
s222, taking the number of the fourth folder of the three-dimensional base as the name of the fourth folder of the three-dimensional base.
In a preferred embodiment of the present invention, the method for processing remote sensing image data in step S23 includes the steps of:
s231, respectively carrying out encryption processing on the digital elevation model data, the remote sensing image data, the simulation model data and the oblique photography data by utilizing a key, and respectively obtaining digital elevation model safety data, remote sensing image safety data, simulation model safety data and oblique photography safety data after processing;
s232, storing digital elevation model safety data in a first folder of a three-dimensional base named as a first folder number of the three-dimensional base, storing remote sensing image safety data in a second folder of the three-dimensional base named as a second folder number of the three-dimensional base, storing simulation model safety data in a third folder of the three-dimensional base named as a third folder number of the three-dimensional base, and storing oblique photographing safety data in a fourth folder of the three-dimensional base named as a fourth folder number of the three-dimensional base.
In a preferred embodiment of the present invention, the compression process in step S24 employs a rar compression method.
In a preferred embodiment of the present invention, the method further includes step S3, after the three-dimensional cadastral management platform receives the transmitted data, the three-dimensional cadastral management platform identifies the received data.
In a preferred embodiment of the present invention, the method for identifying received data by the three-dimensional cadastre management platform comprises the steps of:
s31, respectively decompressing the first file package of the three-dimensional base, the second file package of the three-dimensional base, the third file package of the three-dimensional base and the fourth file package of the three-dimensional base, and respectively obtaining first data of the three-dimensional base, second data of the three-dimensional base, third data of the three-dimensional base and fourth data of the three-dimensional base after decompression;
s32, acquiring keys corresponding to the link marks from the search database by using the link marks, respectively decrypting the three-dimensional base first data, the three-dimensional base second data, the three-dimensional base third data and the three-dimensional base fourth data by using the keys after acquiring the keys corresponding to the link marks from the search database by using the link marks, and respectively obtaining three-dimensional base first platform data, three-dimensional base second platform data, three-dimensional base third platform data and three-dimensional base fourth platform data after processing;
s33, respectively calculating a first folder number of the three-dimensional base, a second folder number of the three-dimensional base, a third folder number of the three-dimensional base and a fourth folder number of the three-dimensional base to obtain a first folder number of the three-dimensional base, a second folder number of the three-dimensional base, a third folder number of the three-dimensional base and a fourth folder number of the three-dimensional base;
s34, extracting names of folders corresponding to the first data of the three-dimensional base, the second data of the three-dimensional base, the third data of the three-dimensional base and the fourth data of the three-dimensional base, wherein the names are respectively a first folder name, a second folder name, a third folder name and a fourth folder name;
s35, judging whether the first folder number of the three-dimensional base platform is consistent with the first folder name:
if the first folder number of the three-dimensional base platform is consistent with the first folder name, the first platform data of the three-dimensional base is digital elevation model data;
if the first folder number of the three-dimensional base platform is inconsistent with the first folder name, the three-dimensional cadastral management platform requests a first file package of the three-dimensional base corresponding to the first folder name of the terminal;
judging whether the second folder number of the three-dimensional base platform is consistent with the second folder name:
if the three-dimensional base platform second folder number is consistent with the second folder name, the three-dimensional base second platform data is remote sensing image data;
if the second folder number of the three-dimensional base platform is inconsistent with the second folder name, the three-dimensional cadastral management platform requests the terminal to send a three-dimensional base second file packet corresponding to the second folder name;
judging whether the third folder number of the three-dimensional base platform is consistent with the third folder name:
if the third folder number of the three-dimensional base platform is consistent with the third folder name, the third platform data of the three-dimensional base is simulation model data;
if the third folder number of the three-dimensional base platform is inconsistent with the third folder name, the three-dimensional cadastral management platform requests the terminal to send a third file packet of the three-dimensional base corresponding to the third folder name;
judging whether the number of the fourth folder of the three-dimensional base platform is consistent with the name of the fourth folder:
if the number of the fourth folder of the three-dimensional base platform is consistent with the name of the fourth folder, the fourth platform data of the three-dimensional base is oblique photographing data;
if the third folder number of the three-dimensional base platform is inconsistent with the third folder name, the three-dimensional cadastral management platform requests the terminal to send a third file packet of the three-dimensional base corresponding to the third folder name.
In a preferred embodiment of the present invention, in step S33, the method for calculating the first folder number of the three-dimensional base platform is as follows:
Platformfoldercode1＝Platformfoldercodecalculationway1<Platformfolderdata1>
the platformfoldcode 1 represents that the three-dimensional base platform first folder number is calculated on the three-dimensional base first platform data, and the obtained three-dimensional base platform first folder number is obtained;
the platformfoldycodecuationway 1 </SUB > represents a first folder number calculation method of the three-dimensional base platform; preferably adopting an MD5 digest calculation method;
platformfolderdata1 represents three-dimensional base first platform data;
in step S33, the method for calculating the second folder number of the three-dimensional base platform includes:
Platformfoldercode2＝Platformfoldercodecalculationway2<Platformfolderdata2>
the platformfoldcode 2 represents that the three-dimensional base platform second folder number is calculated on the three-dimensional base platform second platform data, and the obtained three-dimensional base platform second folder number is obtained;
the platformfoldycodecuationway 2 </SUB > represents a second folder number calculation method of the three-dimensional base platform; preferably adopting an MD5 digest calculation method;
platformfolderdata2 represents three-dimensional base second platform data;
in step S33, the method for calculating the first folder number of the three-dimensional base platform includes:
Platformfoldercode3＝Platformfoldercodecalculationway3<Platformfolderdata3>
the platformecode 3 represents a third folder number of the three-dimensional base platform, which is obtained by calculating the third folder number of the three-dimensional base platform on the third platform data of the three-dimensional base;
the platformfoldycodecuationway 3 </SUB > represents a third folder number calculation method of the three-dimensional base platform; preferably adopting an MD5 digest calculation method;
platformfolderdata3 represents three-dimensional base third platform data;
in step S33, the method for calculating the fourth folder number of the three-dimensional base platform includes:
Platformfoldercode4＝Platformfoldercodecalculationway4<Platformfolderdata4>
the platformecode 4 represents a third folder number of the third base platform, which is obtained by calculating the third folder number of the third base platform on the third base platform data;
the platformfoldycodecuationway 4 </SUB > represents a calculation method of a fourth folder number of the three-dimensional base platform; preferably adopting an MD5 digest calculation method;
platformfolderdata4 represents three-dimensional base fourth platform data.
In a preferred embodiment of the present invention, the decompression in step S31 employs a rar decompression method.
In a preferred embodiment of the present invention, the method of linking the flag in step S25 and the key acquisition in step S231 includes the steps of:
s2321, a terminal requests a public key from a three-dimensional cadastral management platform, at least one pair of public and private pairs are stored on the three-dimensional cadastral management platform, and each public and private pair comprises a public key (the public key is an asymmetric public key) and a private key (the private key is an asymmetric private key);
s2322, after receiving a public key request sent by a terminal, the three-dimensional cadastral management platform sends the public key to the terminal;
s2323, after receiving the public key sent by the three-dimensional cadastre management platform, the terminal generates a key (the key is a symmetric key) and stores the generated key on the terminal;
s2324, encrypting the key through the public key, obtaining a security key of the key after the encryption, and sending the security key to the three-dimensional cadastre management platform;
s2325, after receiving the security key sent by the terminal, the three-dimensional cadastral management platform decrypts the received security key through the private key to obtain the key, and meanwhile, a link mark is generated;
s2326, forming a search pair by the link mark and the key and storing the search pair in a search database; the link mark is encrypted through a key, a safe link mark is obtained after the encryption, and the safe link mark is sent to the terminal;
s2327, after receiving the security link mark sent by the three-dimensional cadastre management platform, the terminal decrypts the received security link mark through the key, obtains the link mark after the decryption, and stores the link mark on the terminal.
In summary, by adopting the technical scheme, the invention can safely upload the three-dimensional base data (digital elevation model, remote sensing image, simulation model, oblique photography data and the like) of the building to the three-dimensional cadastral management platform, thereby preventing leakage.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic block diagram of a flow of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The invention provides a building three-dimensional base construction method based on a three-dimensional cadastre database, which is shown in figure 1 and comprises the following steps:
s1, acquiring three-dimensional base data, wherein the three-dimensional base data comprises one or any combination of Digital Elevation Model (DEM), remote sensing image, simulation model and oblique photographic data;
s2, the three-dimensional base data are uploaded to a three-dimensional cadastre management platform after being processed. The three-dimensional cadastral management platform utilizes a Digital Elevation Model (DEM), a remote sensing image, a simulation model, oblique photographic data and other data to realize the construction of a three-dimensional base of a building.
In a preferred embodiment of the present invention, the following steps are included in step S2:
s21, four folders are established, namely a first three-dimensional base folder, a second three-dimensional base folder, a third three-dimensional base folder and a fourth three-dimensional base folder;
the first folder of the three-dimensional base is used for storing digital elevation model data;
the second folder of the three-dimensional base is used for storing remote sensing image data;
the third folder of the three-dimensional base is used for storing simulation model data;
the third folder of the three-dimensional base is used for storing oblique photographic data;
s22, generating a three-dimensional base first folder number, a three-dimensional base second folder number, a three-dimensional base third folder number and a three-dimensional base fourth folder number for the three-dimensional base first folder, the three-dimensional base second folder, the three-dimensional base third folder and the three-dimensional base fourth folder respectively;
s23, processing the digital elevation model data in the step S1 and storing the processed digital elevation model data in a first folder of the three-dimensional base; processing the remote sensing image data in the step S1 and storing the processed remote sensing image data in a second folder of the three-dimensional base; processing the simulation model data in the step S1 and storing the processed simulation model data in a third folder of the three-dimensional base; processing the oblique photographing data in the step S1 and storing the processed oblique photographing data in a fourth folder of the three-dimensional base;
s24, respectively carrying out data compression treatment on the first folder of the three-dimensional base, the second folder of the three-dimensional base, the third folder of the three-dimensional base and the fourth folder of the three-dimensional base, and obtaining a first file package of the three-dimensional base, a second file package of the three-dimensional base, a third file package of the three-dimensional base and a fourth file package of the three-dimensional base after the compression treatment; wherein the compression process adopts a rar compression method.
S25, uploading the first file package of the three-dimensional base, the second file package of the three-dimensional base, the third file package of the three-dimensional base, the fourth file package of the three-dimensional base and the link mark to the three-dimensional cadastral management platform.
In a preferred embodiment of the present invention, the method for generating the three-dimensional base first folder number in step S22 is as follows:
s221, calculating a first file folder number of the three-dimensional base on the acquired digital elevation model data to obtain the first file folder number of the three-dimensional base; the method for calculating the first folder number of the three-dimensional base comprises the following steps:
foldercode1＝foldercodecalculationway1<folderdata1>
the foldercode1 represents that the obtained digital elevation model data is subjected to three-dimensional base first folder number calculation, and the obtained three-dimensional base first folder number is obtained;
the folcodecodececualrelation 1< > represents a first folder number calculation method of the three-dimensional base; preferably adopting an MD5 digest calculation method;
folderdata1 represents digital elevation model data;
s222, taking the three-dimensional base first folder number as the name of the three-dimensional base first folder;
the method for generating the three-dimensional base second folder number in step S22 is as follows:
s221, calculating a three-dimensional base second folder number of the acquired remote sensing image data to obtain the three-dimensional base second folder number; the calculation method of the second folder number of the three-dimensional base comprises the following steps:
foldercode2＝foldercodecalculationway2<folderdata2>
the foldercode2 represents a three-dimensional base second folder number obtained by calculating the three-dimensional base second folder number of the acquired remote sensing image data;
the folcodecodececualrelation 2< > represents a second folder number calculation method of the three-dimensional base; preferably adopting an MD5 digest calculation method;
folderdata1 represents remote sensing image data;
s222, taking the three-dimensional base first folder number as the name of the three-dimensional base first folder;
the method for generating the third folder number of the three-dimensional base in the step S22 is as follows:
s221, calculating a third folder number of the three-dimensional base on the obtained simulation model data to obtain the third folder number of the three-dimensional base; the calculation method of the third folder number of the three-dimensional base comprises the following steps:
foldercode3＝foldercodecalculationway3<folderdata3>
the foldercode1 represents a third folder number of the three-dimensional base obtained by calculating the third folder number of the three-dimensional base of the obtained simulation model data;
the folcodecodececualrelation 3< > represents a third folder number calculation method of the three-dimensional base; preferably adopting an MD5 digest calculation method;
folderdata3 represents simulation model data;
s222, taking the three-dimensional base third folder number as the name of the three-dimensional base third folder;
the method for generating the third folder number of the three-dimensional base in step S22 is as follows:
s221, calculating a fourth folder number of the three-dimensional base on the acquired oblique photographing data to obtain the fourth folder number of the three-dimensional base; the calculation method of the third folder number of the three-dimensional base comprises the following steps:
foldercode4＝foldercodecalculationway4<folderdata4>
the foldercode1 represents a three-dimensional base fourth folder number obtained by calculating the three-dimensional base fourth folder number of the acquired oblique photographic data;
the folcodecodececualrelation 4< > represents a calculation method of a fourth folder number of the three-dimensional base; preferably adopting an MD5 digest calculation method;
folderdata4 represents oblique photographing data;
s222, taking the number of the fourth folder of the three-dimensional base as the name of the fourth folder of the three-dimensional base.
In a preferred embodiment of the present invention, the method for processing remote sensing image data in step S23 includes the steps of:
s231, respectively carrying out encryption processing on the digital elevation model data, the remote sensing image data, the simulation model data and the oblique photography data by utilizing a key, and respectively obtaining digital elevation model safety data, remote sensing image safety data, simulation model safety data and oblique photography safety data after processing;
s232, storing digital elevation model safety data in a first folder of a three-dimensional base named as a first folder number of the three-dimensional base, storing remote sensing image safety data in a second folder of the three-dimensional base named as a second folder number of the three-dimensional base, storing simulation model safety data in a third folder of the three-dimensional base named as a third folder number of the three-dimensional base, and storing oblique photographing safety data in a fourth folder of the three-dimensional base named as a fourth folder number of the three-dimensional base.
In a preferred embodiment of the present invention, the method further includes step S3, after the three-dimensional cadastral management platform receives the transmitted data, the three-dimensional cadastral management platform identifies the received data.
In a preferred embodiment of the present invention, the method for identifying received data by the three-dimensional cadastre management platform comprises the steps of:
s31, respectively decompressing the first file package of the three-dimensional base, the second file package of the three-dimensional base, the third file package of the three-dimensional base and the fourth file package of the three-dimensional base, and respectively obtaining first data of the three-dimensional base, second data of the three-dimensional base, third data of the three-dimensional base and fourth data of the three-dimensional base after decompression; wherein the decompression adopts a rar decompression method.
S32, acquiring keys corresponding to the link marks from the search database by using the link marks, respectively decrypting the three-dimensional base first data, the three-dimensional base second data, the three-dimensional base third data and the three-dimensional base fourth data by using the keys after acquiring the keys corresponding to the link marks from the search database by using the link marks, and respectively obtaining three-dimensional base first platform data, three-dimensional base second platform data, three-dimensional base third platform data and three-dimensional base fourth platform data after processing;
s33, respectively calculating a first folder number of the three-dimensional base, a second folder number of the three-dimensional base, a third folder number of the three-dimensional base and a fourth folder number of the three-dimensional base to obtain a first folder number of the three-dimensional base, a second folder number of the three-dimensional base, a third folder number of the three-dimensional base and a fourth folder number of the three-dimensional base;
s34, extracting names of folders corresponding to the first data of the three-dimensional base, the second data of the three-dimensional base, the third data of the three-dimensional base and the fourth data of the three-dimensional base, wherein the names are respectively a first folder name, a second folder name, a third folder name and a fourth folder name;
s35, judging whether the first folder number of the three-dimensional base platform is consistent with the first folder name:
if the first folder number of the three-dimensional base platform is consistent with the first folder name, the first platform data of the three-dimensional base is digital elevation model data;
if the first folder number of the three-dimensional base platform is inconsistent with the first folder name, the three-dimensional cadastral management platform requests a first file package of the three-dimensional base corresponding to the first folder name of the terminal; the terminal may be, but is not limited to, a desktop computer, an all-in-one computer, a portable notebook.
Judging whether the second folder number of the three-dimensional base platform is consistent with the second folder name:
if the three-dimensional base platform second folder number is consistent with the second folder name, the three-dimensional base second platform data is remote sensing image data;
if the second folder number of the three-dimensional base platform is inconsistent with the second folder name, the three-dimensional cadastral management platform requests the terminal to send a three-dimensional base second file packet corresponding to the second folder name;
judging whether the third folder number of the three-dimensional base platform is consistent with the third folder name:
if the third folder number of the three-dimensional base platform is consistent with the third folder name, the third platform data of the three-dimensional base is simulation model data;
if the third folder number of the three-dimensional base platform is inconsistent with the third folder name, the three-dimensional cadastral management platform requests the terminal to send a third file packet of the three-dimensional base corresponding to the third folder name;
judging whether the number of the fourth folder of the three-dimensional base platform is consistent with the name of the fourth folder:
if the number of the fourth folder of the three-dimensional base platform is consistent with the name of the fourth folder, the fourth platform data of the three-dimensional base is oblique photographing data; the method for generating the panoramic image from the oblique photographing data comprises the following steps:
and detecting the same parts among the images to be spliced according to the building characteristic points, deleting the same parts, and splicing the images to be spliced in pairs to obtain a panoramic image.
In a preferred embodiment of the present invention, the method for detecting the same portion between the images to be stitched is:
converting the color image into a gray image using a gray conversion formula:
Gray(x,y)＝r*Red(x,y)+g*Green(x,y)+b*Blue(x,y),r+g+b＝1，
wherein Gray (x, y) represents the Gray value at the image pixel point (x, y);
red (x, y) represents the Red value at an image pixel (x, y);
green (x, y) represents the Green value at the image pixel point (x, y);
blue (x, y) represents the Blue value at the image pixel point (x, y);
r, g, b represent coefficients of red, blue and green values, respectively;
wherein Q represents the identity of the selected region between the two images to be stitched;
Q i representing the judgment value;
Green(x i ,y i ) Representing the image to be stitched at a pixel point (x i ,y i ) Gray values at;
Green′(x i ,y i ) Representing another image to be stitched at a pixel point (x i ,y i ) Gray values at;
i represents the number of pixel points in a selection area (building feature points are in the selection area) between two images to be spliced;
if Q is less than or equal to Q 0 Then the selected region is the same part between the images to be stitched, Q 0 Representing a preset gray threshold.
If the third folder number of the three-dimensional base platform is inconsistent with the third folder name, the three-dimensional cadastral management platform requests the terminal to send a third file packet of the three-dimensional base corresponding to the third folder name.
In a preferred embodiment of the present invention, in step S33, the method for calculating the first folder number of the three-dimensional base platform is as follows:
Platformfoldercode1＝Platformfoldercodecalculationway1<Platformfolderdata1>
the platformfoldcode 1 represents that the three-dimensional base platform first folder number is calculated on the three-dimensional base first platform data, and the obtained three-dimensional base platform first folder number is obtained;
the platformfoldycodecuationway 1 </SUB > represents a first folder number calculation method of the three-dimensional base platform; preferably adopting an MD5 digest calculation method;
platformfolderdata1 represents three-dimensional base first platform data;
in step S33, the method for calculating the second folder number of the three-dimensional base platform includes:
Platformfoldercode2＝Platformfoldercodecalculationway2<Platformfolderdata2>
the platformfoldcode 2 represents that the three-dimensional base platform second folder number is calculated on the three-dimensional base platform second platform data, and the obtained three-dimensional base platform second folder number is obtained;
the platformfoldycodecuationway 2 </SUB > represents a second folder number calculation method of the three-dimensional base platform; preferably adopting an MD5 digest calculation method;
platformfolderdata2 represents three-dimensional base second platform data;
in step S33, the method for calculating the first folder number of the three-dimensional base platform includes:
Platformfoldercode3＝Platformfoldercodecalculationway3<Platformfolderdata3>
the platformecode 3 represents a third folder number of the three-dimensional base platform, which is obtained by calculating the third folder number of the three-dimensional base platform on the third platform data of the three-dimensional base;
the platformfoldycodecuationway 3 </SUB > represents a third folder number calculation method of the three-dimensional base platform; preferably adopting an MD5 digest calculation method;
platformfolderdata3 represents three-dimensional base third platform data;
in step S33, the method for calculating the fourth folder number of the three-dimensional base platform includes:
Platformfoldercode4＝Platformfoldercodecalculationway4<Platformfolderdata4>
the platformecode 4 represents a third folder number of the third base platform, which is obtained by calculating the third folder number of the third base platform on the third base platform data;
the platformfoldycodecuationway 4 </SUB > represents a calculation method of a fourth folder number of the three-dimensional base platform; preferably adopting an MD5 digest calculation method;
platformfolderdata4 represents three-dimensional base fourth platform data.
In a preferred embodiment of the present invention, the method of linking the flag in step S25 and the key acquisition in step S231 includes the steps of:
s2321, a terminal requests a public key from a three-dimensional cadastral management platform, at least one pair of public and private pairs are stored on the three-dimensional cadastral management platform, and each public and private pair comprises a public key (the public key is an asymmetric public key) and a private key (the private key is an asymmetric private key);
s2322, after receiving a public key request sent by a terminal, the three-dimensional cadastral management platform sends the public key to the terminal;
s2323, after receiving the public key sent by the three-dimensional cadastre management platform, the terminal generates a key (the key is a symmetric key) and stores the generated key on the terminal;
s2324, encrypting the key through the public key, obtaining a security key of the key after the encryption, and sending the security key to the three-dimensional cadastre management platform;
s2325, after receiving the security key sent by the terminal, the three-dimensional cadastral management platform decrypts the received security key through the private key to obtain the key, and meanwhile, a link mark is generated;
s2326, forming a search pair by the link mark and the key and storing the search pair in a search database; the link mark is encrypted through a key, a safe link mark is obtained after the encryption, and the safe link mark is sent to the terminal;
s2327, after receiving the security link mark sent by the three-dimensional cadastre management platform, the terminal decrypts the received security link mark through the key, obtains the link mark after the decryption, and stores the link mark on the terminal.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The method for constructing the three-dimensional base of the building based on the three-dimensional cadastre database is characterized by comprising the following steps of:
s1, acquiring three-dimensional base data, wherein the three-dimensional base data comprises one or any combination of a digital elevation model, a remote sensing image, a simulation model and oblique photographic data;
s2, processing the three-dimensional base data and uploading the processed three-dimensional base data to a three-dimensional cadastre management platform; the step S2 includes the steps of:
s21, four folders are established, namely a first three-dimensional base folder, a second three-dimensional base folder, a third three-dimensional base folder and a fourth three-dimensional base folder;
the first folder of the three-dimensional base is used for storing digital elevation model data;
the second folder of the three-dimensional base is used for storing remote sensing image data;
the third folder of the three-dimensional base is used for storing simulation model data;
the third folder of the three-dimensional base is used for storing oblique photographic data;
s22, generating a three-dimensional base first folder number, a three-dimensional base second folder number, a three-dimensional base third folder number and a three-dimensional base fourth folder number for the three-dimensional base first folder, the three-dimensional base second folder, the three-dimensional base third folder and the three-dimensional base fourth folder respectively;
s23, processing the digital elevation model data in the step S1 and storing the processed digital elevation model data in a first folder of the three-dimensional base; processing the remote sensing image data in the step S1 and storing the processed remote sensing image data in a second folder of the three-dimensional base; processing the simulation model data in the step S1 and storing the processed simulation model data in a third folder of the three-dimensional base; processing the oblique photographing data in the step S1 and storing the processed oblique photographing data in a fourth folder of the three-dimensional base;
s24, respectively carrying out data compression treatment on the first folder of the three-dimensional base, the second folder of the three-dimensional base, the third folder of the three-dimensional base and the fourth folder of the three-dimensional base, and obtaining a first file package of the three-dimensional base, a second file package of the three-dimensional base, a third file package of the three-dimensional base and a fourth file package of the three-dimensional base after the compression treatment;
s25, uploading the first file package of the three-dimensional base, the second file package of the three-dimensional base, the third file package of the three-dimensional base, the fourth file package of the three-dimensional base and the link mark to the three-dimensional cadastral management platform.
2. The method for building three-dimensional foundation construction based on three-dimensional cadastral database according to claim 1, wherein the method for generating the three-dimensional foundation first folder number in step S22 is as follows:
s221, calculating a first file folder number of the three-dimensional base on the acquired digital elevation model data to obtain the first file folder number of the three-dimensional base; the method for calculating the first folder number of the three-dimensional base comprises the following steps:
foldercode1＝foldercodecalculationway1<folderdata1>
the foldercode1 represents that the obtained digital elevation model data is subjected to three-dimensional base first folder number calculation, and the obtained three-dimensional base first folder number is obtained;
the folcodecodececualrelation 1< > represents a first folder number calculation method of the three-dimensional base;
folderdata1 represents digital elevation model data;
s222, taking the three-dimensional base first folder number as the name of the three-dimensional base first folder;
the method for generating the three-dimensional base second folder number in step S22 is as follows:
s221, calculating a three-dimensional base second folder number of the acquired remote sensing image data to obtain the three-dimensional base second folder number; the calculation method of the second folder number of the three-dimensional base comprises the following steps:
foldercode2＝foldercodecalculationway2<folderdata2>
the foldercode2 represents a three-dimensional base second folder number obtained by calculating the three-dimensional base second folder number of the acquired remote sensing image data;
the folcodecodececualrelation 2< > represents a second folder number calculation method of the three-dimensional base;
folderdata1 represents remote sensing image data;
s222, taking the three-dimensional base first folder number as the name of the three-dimensional base first folder;
the method for generating the third folder number of the three-dimensional base in the step S22 is as follows:
s221, calculating a third folder number of the three-dimensional base on the obtained simulation model data to obtain the third folder number of the three-dimensional base; the calculation method of the third folder number of the three-dimensional base comprises the following steps:
foldercode3＝foldercodecalculationway3<folderdata3>
the foldercode1 represents a third folder number of the three-dimensional base obtained by calculating the third folder number of the three-dimensional base of the obtained simulation model data;
the folcodecodececualrelation 3< > represents a third folder number calculation method of the three-dimensional base;
folderdata3 represents simulation model data;
s222, taking the three-dimensional base third folder number as the name of the three-dimensional base third folder;
the method for generating the third folder number of the three-dimensional base in step S22 is as follows:
s221, calculating a fourth folder number of the three-dimensional base on the acquired oblique photographing data to obtain the fourth folder number of the three-dimensional base; the calculation method of the third folder number of the three-dimensional base comprises the following steps:
foldercode4＝foldercodecalculationway4<folderdata4>
the foldercode1 represents a three-dimensional base fourth folder number obtained by calculating the three-dimensional base fourth folder number of the acquired oblique photographic data;
the folcodecodececualrelation 4< > represents a calculation method of a fourth folder number of the three-dimensional base;
folderdata4 represents oblique photographing data;
s222, taking the number of the fourth folder of the three-dimensional base as the name of the fourth folder of the three-dimensional base.
3. The method for constructing a three-dimensional foundation of a building based on a three-dimensional cadastral database according to claim 1, wherein the method for processing the remote sensing image data in step S23 comprises the steps of:
s231, respectively carrying out encryption processing on the digital elevation model data, the remote sensing image data, the simulation model data and the oblique photography data by utilizing a key, and respectively obtaining digital elevation model safety data, remote sensing image safety data, simulation model safety data and oblique photography safety data after processing;
s232, storing digital elevation model safety data in a first folder of a three-dimensional base named as a first folder number of the three-dimensional base, storing remote sensing image safety data in a second folder of the three-dimensional base named as a second folder number of the three-dimensional base, storing simulation model safety data in a third folder of the three-dimensional base named as a third folder number of the three-dimensional base, and storing oblique photographing safety data in a fourth folder of the three-dimensional base named as a fourth folder number of the three-dimensional base.
4. The method for building three-dimensional foundation construction based on three-dimensional cadastral database according to claim 1, wherein in step S24, the compression process adopts a rar compression method.
5. The method for constructing a three-dimensional foundation of a building based on a three-dimensional cadastral database according to claim 1, further comprising step S3, after the three-dimensional cadastral management platform receives the transmitted data, the three-dimensional cadastral management platform identifies the received data.
6. The method for building three-dimensional foundation construction based on three-dimensional cadastral database according to claim 5, wherein the method for recognizing the received data by the three-dimensional cadastral management platform comprises the steps of:
s31, respectively decompressing the first file package of the three-dimensional base, the second file package of the three-dimensional base, the third file package of the three-dimensional base and the fourth file package of the three-dimensional base, and respectively obtaining first data of the three-dimensional base, second data of the three-dimensional base, third data of the three-dimensional base and fourth data of the three-dimensional base after decompression;
s32, acquiring keys corresponding to the link marks from the search database by using the link marks, respectively decrypting the three-dimensional base first data, the three-dimensional base second data, the three-dimensional base third data and the three-dimensional base fourth data by using the keys after acquiring the keys corresponding to the link marks from the search database by using the link marks, and respectively obtaining three-dimensional base first platform data, three-dimensional base second platform data, three-dimensional base third platform data and three-dimensional base fourth platform data after processing;
s33, respectively calculating a first folder number of the three-dimensional base, a second folder number of the three-dimensional base, a third folder number of the three-dimensional base and a fourth folder number of the three-dimensional base to obtain a first folder number of the three-dimensional base, a second folder number of the three-dimensional base, a third folder number of the three-dimensional base and a fourth folder number of the three-dimensional base;
s34, extracting names of folders corresponding to the first data of the three-dimensional base, the second data of the three-dimensional base, the third data of the three-dimensional base and the fourth data of the three-dimensional base, wherein the names are respectively a first folder name, a second folder name, a third folder name and a fourth folder name;
s35, judging whether the first folder number of the three-dimensional base platform is consistent with the first folder name:
if the first folder number of the three-dimensional base platform is consistent with the first folder name, the first platform data of the three-dimensional base is digital elevation model data;
if the first folder number of the three-dimensional base platform is inconsistent with the first folder name, the three-dimensional cadastral management platform requests a first file package of the three-dimensional base corresponding to the first folder name of the terminal;
judging whether the second folder number of the three-dimensional base platform is consistent with the second folder name:
if the three-dimensional base platform second folder number is consistent with the second folder name, the three-dimensional base second platform data is remote sensing image data;
if the second folder number of the three-dimensional base platform is inconsistent with the second folder name, the three-dimensional cadastral management platform requests the terminal to send a three-dimensional base second file packet corresponding to the second folder name;
judging whether the third folder number of the three-dimensional base platform is consistent with the third folder name:
if the third folder number of the three-dimensional base platform is consistent with the third folder name, the third platform data of the three-dimensional base is simulation model data;
if the third folder number of the three-dimensional base platform is inconsistent with the third folder name, the three-dimensional cadastral management platform requests the terminal to send a third file packet of the three-dimensional base corresponding to the third folder name;
judging whether the number of the fourth folder of the three-dimensional base platform is consistent with the name of the fourth folder:
if the number of the fourth folder of the three-dimensional base platform is consistent with the name of the fourth folder, the fourth platform data of the three-dimensional base is oblique photographing data;
if the third folder number of the three-dimensional base platform is inconsistent with the third folder name, the three-dimensional cadastral management platform requests the terminal to send a third file packet of the three-dimensional base corresponding to the third folder name.
7. The method for three-dimensional foundation construction of building based on three-dimensional cadastral database according to claim 6, wherein in step S31, the method of rar decompression is adopted.
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