CN113342916A - Geographic label image file format data processing method and device and electronic equipment - Google Patents

Geographic label image file format data processing method and device and electronic equipment Download PDF

Info

Publication number
CN113342916A
CN113342916A CN202110695954.9A CN202110695954A CN113342916A CN 113342916 A CN113342916 A CN 113342916A CN 202110695954 A CN202110695954 A CN 202110695954A CN 113342916 A CN113342916 A CN 113342916A
Authority
CN
China
Prior art keywords
data
image file
file format
target
format data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110695954.9A
Other languages
Chinese (zh)
Other versions
CN113342916B (en
Inventor
董颐
李春江
常禹
张立本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aerial Photogrammetry and Remote Sensing Co Ltd
Original Assignee
Aerial Photogrammetry and Remote Sensing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aerial Photogrammetry and Remote Sensing Co Ltd filed Critical Aerial Photogrammetry and Remote Sensing Co Ltd
Priority to CN202110695954.9A priority Critical patent/CN113342916B/en
Publication of CN113342916A publication Critical patent/CN113342916A/en
Application granted granted Critical
Publication of CN113342916B publication Critical patent/CN113342916B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/29—Geographical information databases
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/24—Querying
    • G06F16/245—Query processing
    • G06F16/2457—Query processing with adaptation to user needs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/24—Querying
    • G06F16/248—Presentation of query results

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Data Mining & Analysis (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Remote Sensing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

The application provides a geographic label image file format data processing method and device and electronic equipment, and relates to the technical field of geographic information data processing. The method comprises the following steps: receiving a data access request, wherein the data access request is used for requesting access to target GeoTIFF data, the request comprises an identifier of attribute information of the GeoTIFF data, inquiring the attribute information of the target GeoTIFF data according to the identifier of the attribute information of the target GeoTIFF data, reading returned GeoTIFF data corresponding to the target GeoTIFF data according to the attribute information of the target GeoTIFF data, and sending the returned GeoTIFF data. In the above steps, the target GeoTIFF data is read through the attribute information of the target GeoTIFF data, so that the resources of processing equipment are saved, and the success rate and the efficiency of the GeoTIFF data processing request are improved.

Description

Geographic label image file format data processing method and device and electronic equipment
Technical Field
The application relates to the technical field of geographic information data processing, in particular to a method and a device for processing geographic label image file format data and electronic equipment.
Background
The Geographic Information System (GIS) is a specific spatial Information System of great importance. The system is a technical system for collecting, storing, managing, operating, analyzing, displaying and describing relevant geographic distribution data in the whole or partial earth surface (including the atmosphere) space under the support of a computer hardware and software system. The Tag Image File Format (TIFF) is one of the commonly used formats in graphic Image processing, and the Image Format is complex, but because the storage of the Image information is flexible and changeable, the Tag Image File Format can support a plurality of color systems and is independent of an operating system, so that the TIFF is widely applied. In various applications such as geographic information systems, photogrammetry, and remote sensing, images are required to have geocoded information, such as a coordinate system in which the image is located, a scale, coordinates of points on the image, longitude and latitude, units of length, units of angle, and the like. For storing and reading the information, an Image File in a pure TIFF Format is difficult to store, and a geotagged Image File Format (GeoTIFF for short) is an extension of TIFF, and some geotags are defined on the basis of TIFF, so that various coordinate systems, ellipsoid references, projection information and the like are defined and stored, and the Image data and the geographical data are stored in the same Image File, so that a convenient way is provided for a large number of users to make and use images with geographical information, and therefore, the GeoTIFF data is substantially in a picture Format. Meanwhile, the remote sensing geographic data is more grid data, and the picture format is the best grid data storage mode, so that the remote sensing geographic data is very suitable for being stored as GeoTIFF data.
Currently, in the GIS field, there are many processing methods for GeoTIFF data, for example: the Web Map Service (Web Map Service) is a method for making a Map by using data with geographic spatial position information, wherein the Map is defined as a visual representation of geographic data, and corresponding maps can be returned according to a request of a user, and the maps comprise grid forms such as PNG, GIF and JPEG, or vector forms such as SVG or WEB CGM. The Tile Map service (TMS for short) is also called a cache service area, and Map caching is a very effective method for enabling Map and image services to run faster. When creating a map cache, the server may draw the entire map at several different scale levels and store copies of the map image. The server may then distribute the images when the user requests to use the map.
However, the current data processing method cannot support flexible data demand situations well. For example, when a request that the data range and the data accuracy of GeoTIFF data are changed is faced, in the process of processing the GeoTIFF data, the prior art has a poor performance, and has the problems of excessively high resource occupation or incapability of completing the request and low processing speed. Specifically, the data range may be, for example, a latitude and longitude range, and the data accuracy may be, for example, the data accuracy in a certain latitude and longitude range.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method, an apparatus and an electronic device for processing data in a geotag image file format, so as to solve the problems in the prior art that when a request for GeoTIFF data changes in both data range and data accuracy, in the process of processing the GeoTIFF data, the resource occupation is too high or the request cannot be completed, and the processing speed is slow.
In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:
in a first aspect, an embodiment of the present application provides a method for processing data in a geotag image file format, where the method includes:
receiving a data access request, wherein the data access request is used for requesting to access target geotag image file format data, and the data access request comprises an identifier of attribute information of the target geotag image file format data;
inquiring attribute information of the target geographic label image file format data according to the identifier of the attribute information of the target geographic label image file format data, wherein the attribute information comprises at least one of the following items: data projection information of the target geographic label image file format data;
reading returned geographic label image file format data corresponding to the target geographic label image file format data according to the attribute information of the target geographic label image file format data;
and sending the returned geotag image file format data.
As a possible implementation manner, the data access request further includes: a request mode corresponding to the target geographic label image file format data, wherein the request mode comprises: a single point request mode or a range request mode;
the single point request mode is used for indicating that the target geographic label image file format data is geographic label image file format data of a single position;
the range request mode is used for indicating that the target geographic label image file format data is geographic label image file format data of a target position area, and the target position area comprises a plurality of geographic positions;
the reading of the target geographic tag image file format data according to the attribute information of the target geographic tag image file format data comprises:
and reading the target geographical label image file format data according to the attribute information of the target geographical label image file format data and the request mode corresponding to the target geographical label image file format data.
As a possible implementation manner, the reading, according to the attribute information of the target geotag image file format data and the request manner corresponding to the target geotag image file format data, the returned geotag image file format data corresponding to the target geotag image file format data includes:
and if the request mode corresponding to the target geographic label image file format data is a single-point request mode, determining whether to execute projection transformation according to the data projection information of the target geographic label image file format data in the attribute information, and if so, reading returned geographic label image file format data corresponding to the target geographic label image file format data according to the data projection information of the target geographic label image file format data and preset projection information.
As a possible implementation manner, the reading, according to the data projection information of the target geotag image file format data and the preset projection information, the returned geotag image file format data corresponding to the target geotag image file format data includes:
converting the source data point and the point array of the target geotag image file format data from the data projection information of the target geotag image file format data to the preset projection information;
and determining returned geographic label image file format data corresponding to the target geographic label image file format data according to the precision of the converted data.
As a possible implementation manner, the data access request further includes: data precision; the reading of the returned geotag image file format data corresponding to the target geotag image file format data according to the attribute information of the target geotag image file format data and the request mode corresponding to the target geotag image file format data includes:
and if the request mode corresponding to the target geographic label image file format data is the range request mode, reading returned geographic label image file format data corresponding to the target geographic label image file format data according to the request range indicated by the range request mode, the data precision, the data projection information of the target geographic label image file format data and the preset projection information.
As a possible implementation manner, the reading, according to the request range indicated by the range request manner, the data precision, the data projection information of the target geotag image file format data, and the preset projection information, the returned geotag image file format data corresponding to the target geotag image file format data includes:
generating a bounding box under source data projection according to the request range indicated by the range request mode and the data precision;
generating a point array according to the data precision of the target geographic label image file format data;
projecting the generated point groups according to the data projection information of the target geographic label image file format data and the preset projection information;
and determining returned geotag image file format data corresponding to the target geotag image file format data according to the data precision of the source data and the data precision in the data access request.
As a possible implementation manner, before querying the attribute information of the target geotag image file format data according to the identifier of the attribute information of the target geotag image file format data, the method further includes:
acquiring a storage position of the target geographic label image file format data;
reading the target geotag image file format data from the storage location;
analyzing a header file of the target geographic label image file format data to obtain attribute information of the target geographic label image file format data;
and saving the attribute information of the target geographic label image file format data.
In a second aspect, an embodiment of the present application further provides a data processing apparatus for a geotag image file format, where the apparatus includes:
a receiving module, configured to receive a data access request, where the data access request is used to request access to target geotag image file format data, and the data access request includes an identifier of attribute information of the target geotag image file format data;
the query module is used for querying the attribute information of the target geographic label image file format data according to the identifier of the attribute information of the target geographic label image file format data, wherein the attribute information comprises at least one of the following items: data projection information of the target geographic label image file format data;
the reading module is used for reading returned geographic tag image file format data corresponding to the target geographic tag image file format data according to the attribute information of the target geographic tag image file format data;
and the sending module is used for sending the returned geotag image file format data.
In a third aspect, an embodiment of the present application further provides an electronic device, including: a processor, a storage medium and a bus, wherein the storage medium stores program instructions executable by the electronic device, when the electronic device runs, the processor communicates with the storage medium through the bus, and the processor executes the program instructions to execute the steps of the method for processing the image file format data of the geotag according to the first aspect.
In a fourth aspect, the present application further provides a computer-readable storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the method for processing geotag image file format data according to the first aspect are performed.
The beneficial effect of this application is:
the method, the device and the electronic equipment for processing the geotag image file format data receive a data access request, wherein the data access request is used for requesting access to target geotag image file format data, the data access request comprises an identifier of attribute information of the target geotag image file format data, the attribute information of the target geotag image file format data is inquired according to the identifier of the attribute information of the target geotag image file format data, returned geotag image file format data corresponding to the target geotag image file format data is read according to the attribute information of the target geotag image file format data, and the returned geotag image file format data is sent. In the above steps, the target GeoTIFF data is read through the attribute information of the target GeoTIFF data, and the target GeoTIFF data itself is not directly read, so that resources of processing equipment are saved, and the success rate and efficiency of processing requests for the GeoTIFF data are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic flowchart of a GeoTIFF data processing method according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of another GeoTIFF data processing method according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of another GeoTIFF data processing method according to an embodiment of the present application;
fig. 4 is a schematic flowchart of another GeoTIFF data processing method according to an embodiment of the present application;
fig. 5 is a schematic flowchart of a GeoTIFF data processing method according to an embodiment of the present application;
fig. 6 is a schematic flowchart of another GeoTIFF data processing method according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a GeoTIFF data processing apparatus according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of another GeoTIFF data processing apparatus according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application. Additionally, it should be understood that the schematic drawings are not necessarily drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of the present application. It should be understood that the operations of the flow diagrams may be performed out of order, and steps without logical context may be performed in reverse order or simultaneously. One skilled in the art, under the guidance of this application, may add one or more other operations to, or remove one or more operations from, the flowchart.
In addition, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that in the embodiments of the present application, the term "comprising" is used to indicate the presence of the features stated hereinafter, but does not exclude the addition of further features.
The GeoTIFF data processing method provided in the embodiments of the present application will be explained in detail below with reference to the accompanying drawings.
Referring to fig. 1, it is a schematic flow chart of a GeoTIFF data processing method provided in an embodiment of the present application, where an execution subject of the method may be an electronic device capable of performing data processing, for example, a server, and as shown in fig. 1, the method includes:
step S101, receiving a data access request, where the data access request is used to request to access target GeoTIFF data, and the data access request includes an identifier of attribute information of the target GeoTIFF data.
Specifically, when a user needs to access or acquire GeoTIFF data, a data access request is sent to a server through terminal equipment. Optionally, the attribute information of the target GeoTIFF data may be marked by using an identifier of the attribute information, and the user sends the identifier of the attribute information of the target GeoTIFF data to be accessed or acquired to the server through a data access request, so as to access the target GeoTIFF data. It is understood that the identification of the attribute information of the target GeoTIFF data may be a number, a tag, or other forms, and is not particularly limited herein.
Optionally, when receiving a data access request from a user, the server first needs to determine whether a current idle resource of the system can execute the request operation, and if the system resource is insufficient, the server rejects the request, and if the system resource is sufficient, the server executes the request operation.
And S102, inquiring the attribute information of the target GeoTIFF data according to the identifier of the attribute information of the target GeoTIFF data.
Specifically, the attribute information at least includes data projection information of the target GeoTIFF data, and in addition to the data projection information, the attribute information may further include data granularity, data type, data bounding box, and the like.
The projection of GeoTIFF data refers to displaying geographic coordinates on a map or a screen, wherein the geographic coordinates define the position of the earth surface by using a three-dimensional sphere so as to realize the reference of the point position of the earth surface through latitude and longitude. A Coordinate System composed of these numerous Geographic coordinates is called a Geographic Coordinate System (Geographic Coordinate System), and taking china as an example, three common Coordinate systems in china are currently used: beijing 54, Xian 80 and WGS84, while WGS84 is the most popular geographic coordinate system at present. Internationally, each coordinate system is assigned an EPSG code, where the code of WGS84 is EPSG: 4326. Since the geographic coordinates are three-dimensional, the three-dimensional geographic coordinates need to be converted into two-dimensional coordinates for display on a map or screen. Commonly used projections are the equidistant rectangular projection (plane Carre) and the Mercator projection (Mercator).
Based on the above description of the projection of the GeoTIFF data, the data projection information of the target GeoTIFF data may refer to an EPSG code of a coordinate system, such as EPSG:4326, EPSG:3857, and the like, for example.
The data granularity refers to the refinement and comprehensive degree of data in a database, and the higher the refinement degree is, the smaller the granularity is, known according to the refinement standard of the data granularity; and the lower the degree of refinement, the larger the particle size.
The data type is what data type the target GeoTIFF data is stored in, and the default data type is int, and json, double, and the like may be configured.
The data bounding box refers to the smallest bounding rectangle of a polygon in geographic information.
And the server inquires corresponding attribute information according to the identifier of the attribute information of the target GeoTIFF data in the data access request sent by the user.
Optionally, before querying attribute information of the target GeoTIFF data, it may be determined whether an identifier of the target GeoTIFF data is configured in the data access request, where the identifier of the target GeoTIFF data may refer to flag information of the target GeoTIFF data in a file system, for example, a file name corresponding to the target GeoTIFF data, and is not limited specifically herein.
If the data access request is configured with the identifier of the target GeoTIFF data, the attribute information of the target GeoTIFF data corresponding to the identifier can be inquired from the database, otherwise, the attribute information of the target GeoTIFF data which is closest to the data range in the request and has the highest precision is inquired from the database.
After the attribute information of the target GeoTIFF data is obtained, the returned GeoTIFF data corresponding to the target data can be read according to the attribute information, and the specific process is as described in step S103.
Step S103, reading returned GeoTIFF data corresponding to the target GeoTIFF data according to the attribute information of the target GeoTIFF data.
Specifically, the returned GeoTIFF data corresponding to the target GeoTIFF data may refer to GeoTIFF source data corresponding to the target GeoTIFF data, and the source data needs to be returned to the user.
After the attribute information of the target GeoTIFF data is inquired, the GeoTIFF source data is inquired according to the attribute information, and the returned GeoTIFF data corresponding to the target GeoTIFF data is read.
Step S104, the returned GeoTIFF data is transmitted.
And sending the returned GeoTIFF data obtained in step S103 to the terminal device used by the user, and the user can view the returned GeoTIFF data on the terminal device.
To sum up, an embodiment of the present application provides a GeoTIFF data processing method, which receives a data access request, where the data access request is used to request access to target GeoTIFF data, the data access request includes an identifier of attribute information of the target GeoTIFF data, queries the attribute information of the target GeoTIFF data according to the identifier of the attribute information of the target GeoTIFF data, reads returned GeoTIFF data corresponding to the target GeoTIFF data according to the attribute information of the target GeoTIFF data, and sends the returned GeoTIFF data. In the above steps, the target GeoTIFF data is read through the attribute information of the target GeoTIFF data, and the target GeoTIFF data itself is not directly read, so that resources of processing equipment are saved, and the success rate and efficiency of processing requests for the GeoTIFF data are improved.
Optionally, the server receives a data access request sent by a user, where the data access request includes an identifier of attribute information of the target GeoTIFF data, and may further include a request mode corresponding to the target GeoTIFF data, where the request mode includes a single-point request mode or a range request mode.
Specifically, the single point request manner is used to indicate that the target GeoTIFF data is GeoTIFF data of a single location. For example, a user may request GeoTIFF data for a single location, location a. In the single-point request method, the user may request a specific single location, or may request a plurality of single locations, for example, the user may simultaneously request GeoTIFF data of a plurality of single locations, such as "location B", "location C", "location D", and the like.
The range request mode is used for indicating that the target GeoTIFF data is GeoTIFF data of a target position area, and the target position area comprises a plurality of geographic positions. For example, a user may request GeoTIFF data within the geographic area of "area a".
Optionally, reading the target GeoTIFF data according to the attribute information of the target GeoTIFF data may refer to reading the target GeoTIFF data according to the attribute information of the target GeoTIFF data, and also may read the target GeoTIFF data according to a request mode corresponding to the target GeoTIFF data.
By distinguishing the data request modes, the single-point data request and the range data request can be processed more specifically.
Since the data request method is divided into a single request or a range request, the following embodiments will explain how to process data in different request methods.
Optionally, if the request mode corresponding to the target GeoTIFF data is a single-point request mode, reading returned GeoTIFF data corresponding to the target GeoTIFF data according to the attribute information of the target GeoTIFF data and the request mode corresponding to the target GeoTIFF data, where determining whether to perform projection transformation according to data projection information of the target GeoTIFF data in the attribute information, and if so, reading returned GeoTIFF data corresponding to the target GeoTIFF data according to data projection information of the target GeoTIFF data and preset projection information.
Specifically, reading the returned GeoTIFF data corresponding to the target GeoTIFF data according to the attribute information of the target GeoTIFF data and the request mode corresponding to the target GeoTIFF data may mean that if it is found that the projection of the source data corresponding to the single point request is different from the preset projection according to the projection information of the target GeoTIFF data, projection transformation needs to be performed, or else, projection transformation does not need to be performed. And then reading returned GeoTIFF data corresponding to the target GeoTIFF data.
The projective transformation refers to a process of transforming the coordinates of the projected points of one map into the coordinates of the projected points of another map. The predetermined projection may be, for example, EPSG: 4326. If the projection of the source data is different from the preset projection, projective transformation needs to be performed, which means that if the projection of the source data is not EPSG:4326, the projection of the source data needs to be converted into EPSG:4326, otherwise, no conversion is needed.
Optionally, if projective transformation needs to be performed, a specific process of reading the returned GeoTIFF data corresponding to the target GeoTIFF data according to the data projection information of the target GeoTIFF data and preset projection information may be divided into two steps, please refer to fig. 2, which is a schematic flow diagram of another GeoTIFF data processing method provided in the embodiment of the present application, and as shown in fig. 2, the process includes:
in step S201, the source data point and the point array of the target GeoTIFF data are converted from the data projection information of the target GeoTIFF data to the preset projection information.
Optionally, the server receives a data access request sent by a user, and may further include request data corresponding to target GeoTIFF data, where the request data may be geographic location information for different types and different formats.
Further, attribute information of the target GeoTIFF data is inquired from the database, a request data point corresponding to the target GeoTIFF data and pixel data of the point array are inquired according to the attribute information of the target GeoTIFF data, and then the pixel data is converted to preset projection information from data projection information of the target GeoTIFF data.
The point array is an array formed by a plurality of data points of the GeoTIFF data corresponding to a plurality of single positions requested to be queried by the user in the single-point request. The image element refers to a pixel point or an image element point, i.e., an image unit (picture element), the image unit is a minimum unit for forming a digital image, and when remote sensing data is acquired, such as scanning imaging, the image unit is a minimum unit for scanning and sampling a ground scene by a sensor. Then, the pel data refers to image unit data, i.e., the minimum unit data constituting the image data. The preset projection information may be EPSG: 4326. For example, if the data projection of the target GeoTIFF data is EPSG:3857, the requested data point and point array for the target GeoTIFF data is transformed from EPSG:3857 to EPSG: 4326.
Step S202, according to the precision of the data after projection transformation, return GeoTIFF data corresponding to the target GeoTIFF data is determined.
Specifically, if the accuracy of the source data corresponding to the target GeoTIFF data is insufficient after the projection transformation, an interpolation method is required to interpolate the source data points and the point groups to achieve the target accuracy. If the coordinate after the projection is located in the data grid point, the precision is called as sufficient, otherwise, the precision is called as insufficient. Since the remote sensing geographic data is more grid data, a data grid exists in the GeoTIFF data, and a data grid point refers to each intersection point in the grid. In the embodiment of the present application, the interpolation method may be, for example, a quadratic interpolation method, a nearest neighbor difference method, and the like, and is not limited herein.
Optionally, the server receives a data access request sent by a user, and may further include data accuracy in addition to the identifier of the attribute information of the target GeoTIFF data and the request mode corresponding to the target GeoTIFF data.
Specifically, the data accuracy refers to the data accuracy of the GeoTIFF data within a certain data range, for example, if the data range is a latitude and longitude range, the data accuracy exists within the certain latitude and longitude range, such as data with an accuracy of 3m, data with an accuracy of 10 meters, and the like.
It should be noted that, if the data request method of the user is a range request, when the user sends a data access request, the accuracy of sending data is required in addition to the identifier of the attribute information of the target GeoTIFF data and the request method.
Optionally, the server receives the data access request sent by the user, and may further include a data type in addition to the identifier of the attribute information of the target GeoTIFF data, the request mode corresponding to the target GeoTIFF data, and the data precision.
Optionally, if the request mode corresponding to the target GeoTIFF data is a range request mode, reading returned GeoTIFF data corresponding to the target GeoTIFF data according to the attribute information of the target GeoTIFF data and the request mode corresponding to the target GeoTIFF data, which may be reading returned GeoTIFF data corresponding to the target GeoTIFF data according to the request range and data accuracy indicated by the range request mode, the data projection information of the target GeoTIFF data, and preset projection information.
Optionally, the specific process of reading the returned GeoTIFF data corresponding to the target GeoTIFF data according to the request range indicated by the range request manner, the data precision, the data projection information of the target GeoTIFF data, and the preset projection information may be divided into four steps, please refer to fig. 3, which is a flow diagram of another method for processing GeoTIFF data provided in the embodiment of the present application, and as shown in fig. 3, the process includes:
step S301, according to the request range indicated by the range request mode and the data precision, a bounding box under the projection of the source data is generated.
Specifically, the request range may refer to a target geographic location area requested by the user, where the target geographic location area includes a plurality of geographic locations.
Since the bounding box is the minimum bounding rectangle of a polygon in the geographic information, generating the bounding box under the projection of the source data according to the request range and the data precision can mean generating the minimum bounding rectangle of the target GeoTIFF data under the original projection according to the request range and the data precision.
Step S302, a point array is generated according to the data precision of the target GeoTIFF data.
Specifically, attribute information of target GeoTIFF data is inquired from a database, pixel data are read in batches according to the data precision of the target GeoTIFF data, and a data point array is generated. The point array is an array formed by a plurality of source data points of GeoTIFF data corresponding to a plurality of positions in a geographic position area corresponding to a request range requested by a user in a range request mode. Because the corresponding geographic coordinate information can be calculated according to the position and the projection information of the pixel data in the image, the pixel value of each pixel point can correspond to one data point, and the data point can refer to an object with the geographic coordinate information and the corresponding pixel value, a data point array can be generated by reading the pixel data.
In step S303, the generated point group is projected based on the data projection information of the target GeoTIFF data and the preset projection information.
Specifically, whether data projection information of the target GeoTIFF data is the same as preset projection information or not is judged, and if the data projection information of the target GeoTIFF data is not the same as the preset projection information, the point array is projected, namely the point array is converted from the data projection information of the target GeoTIFF data to the preset projection information. The preset projection information may be EPSG: 4326.
Step S304, determining returned GeoTIFF data corresponding to the target GeoTIFF data according to the data precision of the source data and the data precision in the data access request.
Specifically, it is first determined whether the data precision of the source data is sufficient, and if the data precision of the source data is insufficient, a difference operation needs to be performed on the source data point array according to the data precision in the data access request to achieve the target precision. The interpolation method may be, for example, a quadratic difference method, a nearest neighbor interpolation method, etc., and is not limited herein.
Optionally, before processing the data according to the received data access request, the server further needs to perform some preprocessing operations on the source data, and the following embodiments will explain the preprocessing operation process.
Referring to fig. 4, it is a schematic flow chart of another GeoTIFF data processing method provided in the embodiment of the present application, and as shown in fig. 4, before the step S102, the method further includes:
in step S401, the storage location of the target GeoTIFF data is acquired.
The storage location of the target GeoTIFF data may refer to a location of the target GeoTIFF data in a file system, for example, if a tif file is in file:// C:// Document/test.GIF, the storage location of the target GeoTIFF data acquired by the server is: "C:// Document/test. Similarly, tif files may be in a distributed file system such as hdfs, or in a file server such as ftp. It should be noted that the target GeoTIFF data is placed in a file system accessible by the server.
In step S402, target GeoTIFF data is read from the storage location.
Specifically, the server reads the target GeoTIFF data from the storage location of the acquired target GeoTIFF data.
Step S403, analyzing the header file of the target GeoTIFF data to obtain attribute information of the target GeoTIFF data.
Specifically, a header file of the target GeoTIFF data is read, the header file is analyzed according to a public standard of GeoTIFF, and attribute information such as projection information, data granularity, data type and data bounding box of the target GeoTIFF data is analyzed.
In step S404, the attribute information of the target GeoTIFF data is saved.
Specifically, after a header file of target GeoTIFF data is analyzed to obtain projection information of the target GeoTIFF data, the projection information needs to be judged, and if the projection of the target GeoTIFF data is preset projection information, attributes of the analyzed attribute information, including projection information, data granularity, data type, data bounding box and the like, are stored in a database; and if the projection of the target GeoTIFF data is not preset projection information, performing projection conversion on the bounding box of the data to the preset projection information, and then storing the analyzed attribute information in a database. The preset projection information may be EPSG: 4326.
Optionally, in addition to saving the analyzed attribute information to the database, the storage location of the target GeoTIFF data needs to be saved to the database.
Fig. 5 is a schematic flow chart of a GeoTIFF data processing method provided in an embodiment of the present application, and as shown in fig. 5, a preprocessing process of GeoTIFF data by the GeoTIFF data processing method provided in the embodiment of the present application includes: and starting service, waiting for a data manager to upload a storage position of the GeoTIFF data, reading a header file of the GeoTIFF data file when the storage position of the GeoTIFF data is received, analyzing the header file according to the public standard of GeoTIFF, analyzing attributes such as projection information, data granularity, data type and data bounding box of the GeoTIFF data, judging whether the projection is EPSG (electronic document matching) 4326, if so, storing the analyzed attributes into a database, if not, re-projecting the data bounding box into EPSG (electronic document matching) 4326, and then, storing the analyzed attributes into the database.
Fig. 6 is a schematic flowchart of another GeoTIFF data processing method provided in the embodiment of the present application, and as shown in fig. 6, an inquiry process of the GeoTIFF data processing method provided in the embodiment of the present application for GeoTIFF data includes: receiving a data request of a user, judging whether the current idle resource of the system can execute the request, if not, rejecting the request, and if so, firstly judging whether the data request mode is a single-point request or a range request. For the single-point request, firstly, a target source data point and a target point group are inquired according to attributes, pixel data corresponding to the data point is inquired from source data, if the projection of the source data is different from the preset projection, the source data point and the target point group are subjected to projection transformation to the preset projection, and if the data precision of the source data after the projection transformation is insufficient, an interpolation method is needed to interpolate the source data point and the target point group to achieve the target precision, and the data are returned; for the range request, firstly, a bounding box under source data projection is generated according to the request range and precision, pixel data are read in batch according to the data precision of the source data, a data point array is generated, if the projection of the source data is different from the preset projection, the source data point array is subjected to projection transformation to the preset projection, if the data precision of the source data is insufficient, the source data point array needs to be subjected to difference operation according to the data precision in the data access request to achieve the target precision, and the data are returned.
It should be noted that the specific implementation details in fig. 5 and fig. 6 have been described in detail in the foregoing embodiments, and are not described herein again.
Based on the same inventive concept, the embodiment of the present application further provides a GeoTIFF data processing apparatus corresponding to the method for processing GeoTIFF data, and since the principle of the apparatus in the embodiment of the present application for solving the problem is similar to that of the method for processing GeoTIFF data in the embodiment of the present application, the method can be referred to for implementing the apparatus, and repeated details are not described herein.
Fig. 7 is a schematic structural diagram of a GeoTIFF data processing apparatus provided in an embodiment of the present application, and as shown in fig. 7, the apparatus includes:
a receiving module 701, configured to receive a data access request, where the data access request is used to request to access the target geotag image file format data, and the data access request includes an identifier of attribute information of the target geotag image file format data.
The query module 702 is configured to query the attribute information of the target geotag image file format data according to the identifier of the attribute information of the target geotag image file format data, where the attribute information includes at least one of the following items: data projection information of the target geotag image file format data.
The first reading module 703 is configured to read, according to the attribute information of the target geotag image file format data, returned geotag image file format data corresponding to the target geotag image file format data.
A sending module 704, configured to send back geotag image file format data.
In a possible implementation manner, the first reading module 730 is specifically configured to:
and reading the target geographical label image file format data according to the attribute information of the target geographical label image file format data and the request mode corresponding to the target geographical label image file format data.
In a possible implementation manner, the first reading module 730 is further specifically configured to:
and if the request mode corresponding to the target geographic label image file format data is a single-point request mode, determining whether to execute projection transformation according to the data projection information of the target geographic label image file format data in the attribute information, and if so, reading returned geographic label image file format data corresponding to the target geographic label image file format data according to the data projection information of the target geographic label image file format data and preset projection information.
In a possible implementation manner, the first reading module 730 is further specifically configured to:
converting a source data point and a point array of the target geotag image file format data from the data projection information of the target geotag image file format data to preset projection information; and determining returned geographic label image file format data corresponding to the target geographic label image file format data according to the precision of the converted data.
In a possible implementation manner, the first reading module 730 is further specifically configured to:
and if the request mode corresponding to the target geographic label image file format data is a range request mode, reading returned geographic label image file format data corresponding to the target geographic label image file format data according to the request range indicated by the range request mode, the data precision, the data projection information of the target geographic label image file format data and preset projection information.
In a possible implementation manner, the first reading module 730 is further specifically configured to:
generating a bounding box under source data projection according to the request range indicated by the range request mode and the data precision; generating a point array according to the data precision of the target geographic label image file format data; projecting the generated point groups according to data projection information of the target geographic label image file format data and preset projection information; and determining returned geotag image file format data corresponding to the target geotag image file format data according to the data precision of the source data and the data precision in the data access request.
Fig. 8 is a schematic structural diagram of another GeoTIFF data processing apparatus provided in an embodiment of the present application, and as shown in fig. 8, the apparatus further includes:
an obtaining module 801, configured to obtain a storage location of the target geotag image file format data.
A second reading module 802, configured to read the image file format data of the target geotag from the storage location.
The parsing module 803 is configured to parse the header file of the target geotag image file format data to obtain attribute information of the target geotag image file format data.
The saving module 804 is configured to save attribute information of the target geotag image file format data.
The above apparatus is configured to execute the method provided in the foregoing embodiment, and for the description of the processing flow of each module in the apparatus and the interaction flow between each module, reference may be made to the relevant description in the foregoing method embodiment, which is not described herein again.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more Digital Signal Processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), etc. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
An embodiment of the present application further provides an electronic device 900, as shown in fig. 9, which is a schematic structural diagram of the electronic device 900 provided in the embodiment of the present application, and includes: a processor 901, a memory 902, and a bus 903. The memory 902 stores machine-readable instructions executable by the processor 901, the processor 901 and the memory 902 communicate via the bus 903 when the electronic device 900 is operating, and the machine-readable instructions, when executed by the processor 901, perform the method steps in the above described GeoTIFF data processing method embodiments.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program performs the steps in the foregoing GeoTIFF data processing method embodiment.
In particular, the storage medium can be a general-purpose storage medium, such as a removable disk, a hard disk, or the like, and when a computer program on the storage medium is executed, the above-described embodiments of the GeoTIFF data processing method can be executed.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims (10)

1. A method for processing image file format data of a geographic label, which is characterized by comprising the following steps:
receiving a data access request, wherein the data access request is used for requesting to access target geotag image file format data, and the data access request comprises an identifier of attribute information of the target geotag image file format data;
inquiring attribute information of the target geographic label image file format data according to the identifier of the attribute information of the target geographic label image file format data, wherein the attribute information comprises at least one of the following items: data projection information of the target geographic label image file format data;
reading returned geographic label image file format data corresponding to the target geographic label image file format data according to the attribute information of the target geographic label image file format data;
and sending the returned geotag image file format data.
2. The method of claim 1, wherein the data access request further comprises: a request mode corresponding to the target geographic label image file format data, wherein the request mode comprises: a single point request mode or a range request mode;
the single point request mode is used for indicating that the target geographic label image file format data is geographic label image file format data of a single position;
the range request mode is used for indicating that the target geographic label image file format data is geographic label image file format data of a target position area, and the target position area comprises a plurality of geographic positions;
the reading of the target geographic tag image file format data according to the attribute information of the target geographic tag image file format data comprises:
and reading the target geographical label image file format data according to the attribute information of the target geographical label image file format data and the request mode corresponding to the target geographical label image file format data.
3. The method according to claim 2, wherein the reading the returned geotag image file format data corresponding to the target geotag image file format data according to the attribute information of the target geotag image file format data and the request mode corresponding to the target geotag image file format data comprises:
and if the request mode corresponding to the target geographic label image file format data is a single-point request mode, determining whether to execute projection transformation according to the data projection information of the target geographic label image file format data in the attribute information, and if so, reading returned geographic label image file format data corresponding to the target geographic label image file format data according to the data projection information of the target geographic label image file format data and preset projection information.
4. The method according to claim 3, wherein reading the returned geotag image file format data corresponding to the target geotag image file format data according to the data projection information of the target geotag image file format data and the preset projection information comprises:
converting the source data point and the point array of the target geotag image file format data from the data projection information of the target geotag image file format data to the preset projection information;
and determining returned geographic label image file format data corresponding to the target geographic label image file format data according to the precision of the converted data.
5. The method of claim 2, wherein the data access request further comprises: data precision; the reading of the returned geotag image file format data corresponding to the target geotag image file format data according to the attribute information of the target geotag image file format data and the request mode corresponding to the target geotag image file format data includes:
and if the request mode corresponding to the target geographic label image file format data is the range request mode, reading returned geographic label image file format data corresponding to the target geographic label image file format data according to the request range indicated by the range request mode, the data precision, the data projection information of the target geographic label image file format data and the preset projection information.
6. The method according to claim 5, wherein the reading the returned geotag image file format data corresponding to the target geotag image file format data according to the request range indicated by the range request mode, the data precision, the data projection information of the target geotag image file format data, and the preset projection information, comprises:
generating a bounding box under source data projection according to the request range indicated by the range request mode and the data precision;
generating a point array according to the data precision of the target geographic label image file format data;
projecting the generated point groups according to the data projection information of the target geographic label image file format data and the preset projection information;
and determining returned geotag image file format data corresponding to the target geotag image file format data according to the data precision of the source data and the data precision in the data access request.
7. The method according to any of claims 1-6, wherein before querying the attribute information of the target geotag image file format data based on the identification of the attribute information of the target geotag image file format data, the method further comprises:
acquiring a storage position of the target geographic label image file format data;
reading the target geotag image file format data from the storage location;
analyzing a header file of the target geographic label image file format data to obtain attribute information of the target geographic label image file format data;
and saving the attribute information of the target geographic label image file format data.
8. A geotag image file format data processing apparatus, characterized in that the apparatus comprises:
a receiving module, configured to receive a data access request, where the data access request is used to request access to target geotag image file format data, and the data access request includes an identifier of attribute information of the target geotag image file format data;
the query module is used for querying the attribute information of the target geographic label image file format data according to the identifier of the attribute information of the target geographic label image file format data, wherein the attribute information comprises at least one of the following items: data projection information of the target geographic label image file format data;
the reading module is used for reading returned geographic tag image file format data corresponding to the target geographic tag image file format data according to the attribute information of the target geographic tag image file format data;
and the sending module is used for sending the returned geotag image file format data.
9. An electronic device, comprising: a processor, a storage medium and a bus, the storage medium storing program instructions executable by the processor, the processor and the storage medium communicating via the bus when the electronic device is running, the processor executing the program instructions to perform the steps of the geotag image file format data processing method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the geotag image file format data processing method according to any one of claims 1 to 7.
CN202110695954.9A 2021-06-22 2021-06-22 Geographic tag image file format data processing method and device and electronic equipment Active CN113342916B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110695954.9A CN113342916B (en) 2021-06-22 2021-06-22 Geographic tag image file format data processing method and device and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110695954.9A CN113342916B (en) 2021-06-22 2021-06-22 Geographic tag image file format data processing method and device and electronic equipment

Publications (2)

Publication Number Publication Date
CN113342916A true CN113342916A (en) 2021-09-03
CN113342916B CN113342916B (en) 2024-01-26

Family

ID=77477933

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110695954.9A Active CN113342916B (en) 2021-06-22 2021-06-22 Geographic tag image file format data processing method and device and electronic equipment

Country Status (1)

Country Link
CN (1) CN113342916B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117634430A (en) * 2024-01-10 2024-03-01 广州市天奕信息技术股份有限公司 File conversion method, system, equipment and storable medium

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001098925A2 (en) * 2000-06-20 2001-12-27 Globexplorer, Inc. Method, system and computer program product for delivering spatially referenced information in a global computer network
US20060041375A1 (en) * 2004-08-19 2006-02-23 Geographic Data Technology, Inc. Automated georeferencing of digitized map images
US20090112474A1 (en) * 2007-10-25 2009-04-30 Microsoft Corporation View-Independent Tagging of Geospatial Entities in Images
CN102027468A (en) * 2008-05-16 2011-04-20 上海惠普有限公司 Provisioning a geographical image for retrieval
US8433338B1 (en) * 2011-08-30 2013-04-30 Google Inc. Method to efficiently index extracted image features from geographically located images
CN105260450A (en) * 2015-10-10 2016-01-20 东方网力科技股份有限公司 Electronic map issuing method and apparatus and electronic map display method
US20160110823A1 (en) * 2014-10-17 2016-04-21 Jones Lang Lasalle Ip, Inc. Computing system and method for visualizing integrated real estate data
CN105608222A (en) * 2016-01-12 2016-05-25 中国人民解放军国防科学技术大学 Rapid building method of tile pyramid for large-scale raster data set
CN107305572A (en) * 2016-04-25 2017-10-31 中国移动通信集团贵州有限公司 A kind of data processing method and server
CN108172277A (en) * 2017-12-19 2018-06-15 浙江大学 A kind of more multiplying power digital slices image storages and the method and system of browsing
CN110286960A (en) * 2019-06-27 2019-09-27 北京金山安全软件有限公司 Image file loading method and device, electronic equipment and storage medium
CN110442444A (en) * 2019-06-18 2019-11-12 中国科学院计算机网络信息中心 A kind of parallel data access method and system towards mass remote sensing image
CN110462337A (en) * 2017-01-31 2019-11-15 沙特阿拉伯石油公司 Map terrestrial reference is automatically generated using sensor readable tag
CN110990510A (en) * 2019-11-28 2020-04-10 北京世纪高通科技有限公司 Three-dimensional map generation method, terminal and server
CN111125392A (en) * 2019-12-25 2020-05-08 华中科技大学 Remote sensing image storage and query method based on matrix object storage mechanism
CN112416930A (en) * 2020-11-18 2021-02-26 国家基础地理信息中心 Query method, storage method and related device for mixed time phase image map data
CN112559667A (en) * 2021-02-23 2021-03-26 北京简巨科技有限公司 Map editor, map engine, map editing system, map editing method, and storage medium
CN112579722A (en) * 2020-12-22 2021-03-30 北京航天世景信息技术有限公司 High-customization remote sensing image automatic rapid map cutting method
CA3157392A1 (en) * 2019-10-11 2021-04-15 Foundat Pty Ltd Geographically referencing an item
CN112966134A (en) * 2021-03-26 2021-06-15 北京亿耘科技有限公司 Remote sensing image data processing method, system and storage medium

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001098925A2 (en) * 2000-06-20 2001-12-27 Globexplorer, Inc. Method, system and computer program product for delivering spatially referenced information in a global computer network
US20060041375A1 (en) * 2004-08-19 2006-02-23 Geographic Data Technology, Inc. Automated georeferencing of digitized map images
US20090112474A1 (en) * 2007-10-25 2009-04-30 Microsoft Corporation View-Independent Tagging of Geospatial Entities in Images
CN102027468A (en) * 2008-05-16 2011-04-20 上海惠普有限公司 Provisioning a geographical image for retrieval
US8433338B1 (en) * 2011-08-30 2013-04-30 Google Inc. Method to efficiently index extracted image features from geographically located images
US20160110823A1 (en) * 2014-10-17 2016-04-21 Jones Lang Lasalle Ip, Inc. Computing system and method for visualizing integrated real estate data
CN105260450A (en) * 2015-10-10 2016-01-20 东方网力科技股份有限公司 Electronic map issuing method and apparatus and electronic map display method
CN105608222A (en) * 2016-01-12 2016-05-25 中国人民解放军国防科学技术大学 Rapid building method of tile pyramid for large-scale raster data set
CN107305572A (en) * 2016-04-25 2017-10-31 中国移动通信集团贵州有限公司 A kind of data processing method and server
CN110462337A (en) * 2017-01-31 2019-11-15 沙特阿拉伯石油公司 Map terrestrial reference is automatically generated using sensor readable tag
CN108172277A (en) * 2017-12-19 2018-06-15 浙江大学 A kind of more multiplying power digital slices image storages and the method and system of browsing
CN110442444A (en) * 2019-06-18 2019-11-12 中国科学院计算机网络信息中心 A kind of parallel data access method and system towards mass remote sensing image
CN110286960A (en) * 2019-06-27 2019-09-27 北京金山安全软件有限公司 Image file loading method and device, electronic equipment and storage medium
CA3157392A1 (en) * 2019-10-11 2021-04-15 Foundat Pty Ltd Geographically referencing an item
CN110990510A (en) * 2019-11-28 2020-04-10 北京世纪高通科技有限公司 Three-dimensional map generation method, terminal and server
CN111125392A (en) * 2019-12-25 2020-05-08 华中科技大学 Remote sensing image storage and query method based on matrix object storage mechanism
CN112416930A (en) * 2020-11-18 2021-02-26 国家基础地理信息中心 Query method, storage method and related device for mixed time phase image map data
CN112579722A (en) * 2020-12-22 2021-03-30 北京航天世景信息技术有限公司 High-customization remote sensing image automatic rapid map cutting method
CN112559667A (en) * 2021-02-23 2021-03-26 北京简巨科技有限公司 Map editor, map engine, map editing system, map editing method, and storage medium
CN112966134A (en) * 2021-03-26 2021-06-15 北京亿耘科技有限公司 Remote sensing image data processing method, system and storage medium

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
王树东;郝彬彬;刘素红;王晓华;: "多源数据辅助遥感影像发布研究", 河北建筑科技学院学报, no. 01, pages 72 - 74 *
蒋球伟;: "基于MGIS的GeoTIFF应用研究", 计算机工程与应用, no. 15, pages 205 - 208 *
贲进;张永生;童晓冲;: "GeoTIFF格式分析及其扩充应用技术探讨", 测绘技术装备, no. 02, pages 10 - 14 *
赵慧慧;赵凡;陈仁海;冯志勇;: "基于地理空间大数据的高效索引与检索算法", 计算机研究与发展, no. 02, pages 95 - 107 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117634430A (en) * 2024-01-10 2024-03-01 广州市天奕信息技术股份有限公司 File conversion method, system, equipment and storable medium

Also Published As

Publication number Publication date
CN113342916B (en) 2024-01-26

Similar Documents

Publication Publication Date Title
CN106384371B (en) Map drawing method based on vector tiles
US11086926B2 (en) Thumbnail generation from panoramic images
CN107092623B (en) Interest point query method and device
CN113378634B (en) Digital image presentation
CN112966134A (en) Remote sensing image data processing method, system and storage medium
CN111090716A (en) Vector tile data processing method, device, equipment and storage medium
CN113342916B (en) Geographic tag image file format data processing method and device and electronic equipment
CN110580273B (en) Map GIS data processing and storing method and device and readable storage medium
CN113157214B (en) Remote sensing image display method, device, equipment and storage medium
CN110799969B (en) Semantic vector tablet
CN105354326A (en) Spatial position indexing method and system
US20230065027A1 (en) Gpu-based digital map tile generation method and system
US10460427B2 (en) Converting imagery and charts to polar projection
US10460420B2 (en) Converting spatial features to map projection
WO2023123583A1 (en) Fusion method, apparatus and system suitable for geological data and geographic information data
CN115905441A (en) Spatial data processing method, spatial data processing device, electronic device and medium
CN106846388B (en) Image map registration method and system
WO2022170776A1 (en) Event location transmission method, device and system
CN110750602A (en) Method and device for determining site to which order address belongs
CN114416796A (en) Tile generation method, device, equipment and storage medium
CN103092818B (en) Thumbnail generation system and the reduced graph generating method of form
CN113538468A (en) Method and device for constructing high-definition satellite map vector slice based on svg format
JP5396971B2 (en) Position search system and position search method
CN113656633B (en) Geographical space information transmission method and device based on OFD (office file format) file
CN113591852B (en) Method and device for marking region of interest

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant