CN106844519B - Remote sensing special topic product method for visualizing based on three-dimensional digital earth - Google Patents
Remote sensing special topic product method for visualizing based on three-dimensional digital earth Download PDFInfo
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Abstract
Remote sensing special topic product method for visualizing based on three-dimensional digital earth, it include: the thematic product data that input is obtained based on remote sensing image application, it is divided into raster data and vector data two types, and raster data processing and vector data processing are carried out respectively, it obtains showing grid and vector shows element, special layer management is carried out based on three-dimensional digital earth later, and carries out lattices special topic and the visualization of vector class special topic.The method for visualizing that the present invention passes through the remote sensing special topic product based on three-dimensional digital earth, all kinds of common remote sensing image application achievements can be visualized in three-dimensional digital earth, thematic product can be made to realize the integrated shared of convenient and efficient and vividly show again, can for the popularization of remote sensing application achievement, popularize and exchange technical support is provided.
Description
Technical field
The present invention relates to be related to geographical information visualization field, especially a kind of remote sensing special topic based on three-dimensional digital earth
Product method for visualizing.
Background technique
Remote sensing satellite data are reflection of the remote sensing satellite in space exploration earth earth's surface object to electromagnetic wave, and its transmitting
Electromagnetic wave is completed remote identification object, these electromagnetic waves is converted, identification obtains Visual Graph to extract the object information
Picture, as satellite image.
Currently, China has emitted the domestic remote sensing such as remote sensing series, mini-bus series, resource series, environment series, high score series
Satellite, these remote sensing satellites can obtain different resolution, spectral region, cover by different orbit parameter and load characteristic
The remote sensing resources abundant such as lid range, access time.
Using remote sensing satellite data service in mapping, territory, planning, environment, water conservancy, traffic, ocean, forestry, agricultural,
The fields such as mine, electric power, public safety, can powerful guarantee modern agriculture, prevent and reduce natural disasters, resource investigation, environmental protection and country
The Major Strategic Demands such as safety；It also can satisfy support territory investigation energetically and utilization, geographical mapping, ocean and weather gas simultaneously
As the monitoring of observation, water conservancy and forest resourceies, city and traffic fine-grained management, hygienic epidemic monitoring, earth system science research
The application demand of equal major areas.
Remote sensing special topic production using remote sensing image as data source, on its basis combine various industries, region and its
His application demand carries out category division by artificial or intelligent means, target identification, outlier detection, variation monitoring, loss are commented
The processing such as estimate, obtains required special topic application data.
At this stage, the form of expression of thematic product is mainly static thematic map, and a typical static thematic map will be thematic
Using being superimposed upon after data rasterizing on latitude and longitude coordinates, administrative map or image map, shown at thematic map center, on figure
Side shows the thematic map title, and four corners show the elements such as compass, scale bar, legend, and the form that saves can be papery figure,
It can be digital picture.
Static thematic map show the problem of form is primarily present include: a thematic map carrying information and show form by
Limit, can only use single resolution-scale in two-dimensional surface space, show fixed range content, can not believe with other attributes
Breath, extended description information, space time correlation information are effectively combined and are integrated, and can not support interactive operation and dynamic analysis.
Summary of the invention
In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide one kind to be based on 3-dimensional digital
The remote sensing special topic product method for visualizing of the earth is somebody's turn to do the remote sensing special topic product method for visualizing based on three-dimensional digital earth with three-dimensional
Digital earth is carrying platform, can be carried out with specification process to lattices product and vector class product more under unified Spatial-Temporal Frame
Scale dynamic shows, and shows carrying information and form constrained existing for method so as to solve existing static thematic map, can not
Embody multi-scale information, can not embody space time correlation information, can not dynamic interaction and the disadvantages of operation, and then it is special to realize remote sensing
Inscribe the integrated shared and image visual representation abundant of the convenient and efficient of product.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of remote sensing special topic product method for visualizing based on three-dimensional digital earth, includes the following steps.
Step 1, remote sensing special topic product data remote sensing special topic analysis of product date and classification: are input to analysis of product date
The input interface at center；Analysis of product date center will be analyzed and be classified to received remote sensing special topic product data, will be distant
Feel thematic product data and is divided into raster data and vector data two types.
Step 2, raster data processing: the raster data in step 1 is handled, and obtaining three-dimensional digital earth can be straight
The grid for connecing parsing shows element；It includes grid tile, legend one, thematic name one and description file one that grid, which shows element,.
Step 3, vector data is handled: the vector data in step 1 being handled, obtaining three-dimensional digital earth can be straight
The vector for connecing parsing shows element；It includes vector rendering objects sequence, legend two, thematic name two and description text that vector, which shows element,
Part two.
Step 4, special layer management: the grid obtained based on three-dimensional digital earth to step 2 shows element and step 3
The vector of acquisition shows data and carries out special layer management.
Step 5, lattices special topic visualizes: being configured according to the figure layer in step 4, based on three-dimensional digital earth to lattices
Special topic is visualized.
Step 6, vector class special topic visualizes: being configured according to the figure layer in step 4, based on three-dimensional digital earth to vector class
Special topic is visualized.
In the step 1, the classification foundation at analysis of product date center is the body data in remote sensing special topic product data
The data mode of type, i.e. carrying product core information is that raster data or vector data are classified；When carrying product core
When the data mode of heart information is raster data, it is classified as raster data；When the data mode of carrying product core information is arrow
When measuring data, then it is classified as vector data；Wherein, raster data refers to coming representation space atural object or phenomenon in a regular array
The data organization of distribution, each data in tissue indicate the non-geometric attributive character of atural object or phenomenon；What vector data referred to
It is that point, line and the geographical entity of polygon are indicated by way of recording coordinate.
In the step 2, raster data processing is included the following steps with obtaining the method that grid shows element.
Step 2a obtains geography information: the file header or description information in raster data obtained according to step 1 obtains
Geography information；Wherein, geography information includes the projection pattern and longitude and latitude range of raster data.
Step 2b obtains raster data: obtaining body data, i.e. raster data sheet from the raster data that step 1 obtains
Body.
Step 2c obtains style sheet one: style sheet one is obtained from the raster data that step 1 obtains, style sheet one includes
Show rule, color configuration, display resource path or description.
Step 2d obtains description information one: description information one, description information are obtained from the raster data that step 1 obtains
One includes title, production time, source and the purposes of data product.
Step 2e, raster data stylization: the style sheet one obtained according to the step 2b raster data obtained and step 2c,
Stylized operation is carried out to raster data, thus by former raster data be converted to set in style sheet one pattern be consistent it is new
Raster data；Raster data stylization operation includes that color mapping or color adjust.
Step 2f obtains grid tile: the geography information phase that the new raster data that step 2e is obtained is obtained with step 2a
In conjunction with, using building pyramid and slice by the way of carry out tile operation, to obtain grid tile data.
Step 2g generates legend one: the color configuration generation in the style sheet one obtained according to step 2c can be directly by three
The legend one of dimension word earth parsing (such as common picture format).
Step 2h generates thematic name one and description file one: the description information one obtained according to step 2d, generates thematic name
One and description file one；Wherein, thematic name one refers to the title of the corresponding thematic product of description；Describing file one includes production portion
Door, production time, data source, purposes and range specification.
In the step 5, the visualization of lattices special topic refers to that the grid tile for obtaining step 2f carries out projection transform
It is being shown in three-dimensional digital earth in the form of local image afterwards, and is showing thematic name one among portion on the screen, shielded
The curtain lower right corner shows legend one, and right button pop-up shows the description information in description file one with report form.
In the step 3, vector data processing is included the following steps with obtaining the method that vector shows element.
Step 3a obtains geological information: obtaining body data from the vector data of step 1, body data is vector
The geological information that data itself are included.
Step 3b obtains attribute information: obtaining attribute information from the vector data of step 1, attribute information refers to several
The extended description what information carries out, including business datum and statistical data.
Step 3c obtains style sheet two: style sheet two is obtained from the vector data of step 1, style sheet two includes display
Rule, color configuration, display resource path or description.
Step 3d obtains description information two: description information two is obtained from the vector data of step 1, description information two is wrapped
Include title, production time, source and the purposes of data product.
Step 3e, production, line and face sequence: the geological information obtained for step 3a successively extracts in geological information
Point information, line information and face information；Wherein, the point information of extraction generates point sequence；The line information of extraction generates line sequence column；It extracts
Face information generate face sequence.
Step 3f, vector rendering objects sequence: the attribute of point, line and face sequence, step 3b acquisition that step 3e is generated
The style sheet two that information and step 3c are obtained combines, and generates vector rendering objects sequence.
Step 3g generates legend two: the color configuration in style sheet two obtained according to step 3c generates legend two.
Step 3h generates thematic name two and description file two: the description information two obtained according to step 3d, generates thematic name
Two and description file two；Wherein, the title of the corresponding thematic product of the thematic description of name two；Describing file two includes production portion
Door, production time, data source, purposes and range specification.
In the step 3, sequence refers to one group of data comprising same data structure；Vector rendering objects sequence refers to
It is the description sequence that vector graphics can be directly parsed and generated by three-dimensional digital earth, every group in vector rendering objects sequence
Data include geometric graphic element type, latitude and longitude coordinates, display parameters, symbolism specification, resource description and attribute information.
In the step 6, the visualization of vector class special topic refers to showing thematic name two among portion on the screen, on the screen right side
Inferior horn shows legend two, and right button pop-up shows the description information in description file two with report form, while in 3-dimensional digital
Vector rendering objects sequence is shown in ball.
In the step 6, the method that vector rendering objects sequence is shown in three-dimensional digital earth includes the following steps.
Step 6a obtains internal storage data to be rendered: vector rendering objects sequence parsed using three-dimensional digital earth,
Obtain memory array to be rendered.
Step 6b selects visual pattern: to every group of data in the memory array obtained in step 6a, according to polar plot
Element type, display parameters, attribute information select visual pattern.
Step 6c, point visualization: being the data of vertex type to vector graphical element, generates display point by latitude and longitude coordinates
It sets, obtains dot shape and size by display parameters, point icon is obtained by symbolism specification and resource description, with scatterplot figure
Formula is visualized, and passes through a size or label mode display attribute information.
Step 6d, line visualization: being the data of line type to vector graphical element, generates line position by latitude and longitude coordinates interpolation
It sets, obtains line style, color, width by display parameters, line pattern is obtained by symbolism specification and resource description, with network
Or dynamic flow graph type is visualized, and passes through line width or label mode display attribute information.
Step 6e, face visualization: being the data of noodles type to vector graphical element, generates face position by latitude and longitude coordinates interpolation
It sets, obtains face filling, color, boundary types by display parameters, face pattern is obtained by symbolism specification and resource, with region
Figure or heating power diagram form are visualized, and pass through area size, color color range or label mode display attribute information.
Step 6f, volume visualization: being the data of body type to vector graphical element, generates bottom surface position by latitude and longitude coordinates interpolation
It sets, obtains bottom surface filling, color, boundary and cylinder type by display parameters, body sample is obtained by symbolism specification and resource
Formula is visualized with three-dimensional column diagram form, and passes through histogram height, color color range, base surface area size or label side
Formula display attribute information.
In the step 4, special layer management is included in three-dimensional digital earth based on the newly-built special topic of figure layer relevant interface
Classification, newly-built special layer, control Layer Order, control figure layer, which are shown, to be hidden and generates time shaft according to phase information.
In the step 1, remote sensing special topic product data refer to the relevant data of a special topic product, include thematic image number
According to, vector data, style sheet, thumbnail, effect picture and description information.
The present invention after adopting the above method, has the following beneficial effects:
1. propose that a kind of remote sensing special topic product is uniformly processed and shows process, it can be to lattices and vector class special topic product
It is flexibly handled according to its own characteristic and application demand, integrative display, helps to realize the hair of thematic product convenient and efficient
Cloth is shared；
2. can be realized thematic product multiple dimensioned (tile pyramid), multi-form showing (single width figure, multidate and customized
Style etc.) and dynamic interaction, thematic product can be extended and show form, promoted and show effect, increase shows information content and expression
Ability.
3. technical solution of the present invention can be applied to pushing away for the application achievements based on remotely-sensed data such as every profession and trade, region, public
Broad-spectrum and, and provide support for the depth analysis and valued added applications of thematic product.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the remote sensing special topic product method for visualizing based on three-dimensional digital earth of the present invention.
Fig. 2 shows the flow chart of step 2 raster data processing.
Fig. 3 shows the flow chart of step 3 vector data processing.
Fig. 4 shows the visual flow chart of step 6 vector class special topic.
Specific embodiment
Xia Mianjiehefutuhejuti compare Jia Shishifangshiduibenfamingzuojinyibuxiangxishuoming.
As shown in Figure 1, a kind of remote sensing special topic product method for visualizing based on three-dimensional digital earth, includes the following steps.
Step 1, remote sensing special topic analysis of product date and classification.
Remote sensing special topic product data in the present invention refer to the relevant data of a special topic product, and it includes have thematic image number
According to, contents such as vector data, style sheet, thumbnail, effect picture and description information.
It remote sensing special topic product data is preferably passed through into TCP/UDP agreement is input to the input at analysis of product date center and connect
Mouthful.
Analysis of product date center will be analyzed and be classified to received remote sensing special topic product data, and remote sensing special topic is produced
Product data are divided into raster data and vector data two types.
The main foundation of analysis of product date center classification is the body data type in remote sensing special topic product data, that is, is held
The data mode for carrying product core information is that raster data or vector data are classified.This kind of classification method is existing skill
Art, which is not described herein again.
When the data mode for carrying product core information is raster data, it is classified as raster data；When carrying product core
When the data mode of heart information is vector data, then it is classified as vector data.
Wherein, raster data refers to the data organization for coming representation space atural object or phenomenon distribution in a regular array, group
Each data in knitting indicate the non-geometric attributive character of atural object or phenomenon.
Vector data refers to indicating point, line and the geographical entity of polygon by way of recording coordinate.Coordinate is empty
Between be set as continuous, allow the explication of any position, length and area.
Certainly, as an alternative, the classification foundation at analysis of product date center can also will be in remote sensing special topic product data
Body data type is combined with application demand.
Step 2, raster data processing: being input to raster data processing operation input interface for the raster data in step 1,
Raster data processing is carried out, the grid that obtaining three-dimensional digital earth can directly parse shows element；Grid shows element
Grid tile, legend one, thematic name one and description file one.
Above-mentioned raster data processing shows the method for element to obtain grid, as shown in Fig. 2, preferably including following steps.
Step 2a obtains geography information: the file header or description information in raster data obtained according to step 1 obtains
Geography information；Wherein, geography information includes the projection pattern and longitude and latitude range of raster data.
Step 2b obtains raster data: obtaining body data, i.e. raster data sheet from the raster data that step 1 obtains
Body is generally provided by TIFF form.
Step 2c obtains style sheet one: style sheet one is obtained from the raster data that step 1 obtains, style sheet one is main
Including display rule, color configuration, the display contents such as resource path or description.
Step 2d obtains description information one: description information one, description information are obtained from the raster data that step 1 obtains
One main title, production time, source and purposes etc. including data product；Description information one mainly passes through XML or DOC form
It provides.
Above-mentioned steps 2a to 2d can be adjusted dynamically as needed.
Step 2e, raster data stylization: the style sheet one obtained according to the step 2b raster data obtained and step 2c,
Stylized operation is carried out to raster data by existing raster data processing technology, former raster data is converted to and style sheet one
In set pattern new raster data (style sheet that different-style can be set as needed in raster data)；Raster data style
Changing operation mainly includes that color mapping or color adjust.
Step 2f obtains grid tile: projection pattern that new raster data that step 2e is obtained and step 2a are obtained and
The geography information such as longitude and latitude range combine, and tile operation are carried out using the common slicing mode of industry, to be commonly used
The grid tile data of image file format (PNG, JPEG etc.).
Step 2g generates legend one: the color configuration generation in the style sheet one obtained according to step 2c can be directly by three
The legend one of dimension word earth parsing, legend one are usually PNG form.
Step 2h generates thematic name one and description file one: the description information one obtained according to step 2d, generates thematic name
One and description file one.
Wherein, thematic name one refers to the title of the corresponding thematic product of description；Thematic name one is usually with explanatory and exclusive
Property 10 ~ 30 character literals description.
Description file one provides usually in the form of XML or JSON.When describing file one including production department, production
Between, the contents such as data source, purposes and range specification.
Step 3, vector data is handled: the vector data in step 1 is input to vector data processing operation input interface,
Then vector data processing is carried out, the vector that obtaining three-dimensional digital earth can directly parse shows element.
It includes vector rendering objects sequence, legend two, thematic name two and description file two that vector, which shows element,.
As shown in figure 3, vector data processing is included the following steps with obtaining the method that vector shows element.
Step 3a obtains geological information: obtaining body data from the vector data of step 1, body data is vector
The geological information that data itself are included.
Above-mentioned vector data generally passes through the offer of the forms such as SHP, KML, JSON, XML, EXL.
Step 3b obtains attribute information: obtaining attribute information from the vector data of step 1, attribute information refers to several
The extended description what information carries out, including business datum and statistical data.
Above-mentioned attribute information generally passes through the offer of the forms such as DBF, KML, JSON, XML, EXL.
Step 3c obtains style sheet two: style sheet two is obtained from the vector data of step 1, style sheet two includes display
Rule, color configuration, the display contents such as resource path or description.
Step 3d obtains description information two: description information two is obtained from the vector data of step 1, description information two is wrapped
Include title, production time, source and the purposes etc. of data product.Description information two-way often passes through the offer of XML or DOC form.
Above-mentioned steps 3a to 3d can be adjusted dynamically as needed.
Step 3e, production, line and face sequence: the geological information obtained for step 3a is successively mentioned using the prior art
Take geological information midpoint information, line information and face information；Wherein, the point information of extraction generates point sequence；The line information of extraction is raw
It is arranged at line sequence；The face information of extraction generates face sequence.
Step 3f, vector rendering objects sequence: the attribute of point, line and face sequence, step 3b acquisition that step 3e is generated
The style sheet two that information and step 3c are obtained combines, and generates vector rendering objects sequence.
Here sequence refers to one group of data comprising same data structure；Vector rendering objects sequence refers to can
The description sequence of vector graphics is directly parsed and generated by three-dimensional digital earth, every group of data in vector rendering objects sequence are equal
Include geometric graphic element type, latitude and longitude coordinates, display parameters, symbolism specification, resource description and attribute information.
Vector rendering objects sequence provides generally in the form of JSON.
Step 3g generates legend two: the color configuration in style sheet two obtained according to step 3c generates legend two, legend
Two be usually PNG form.
Step 3h generates thematic name two and description file two.
According to the description information two that step 3d is obtained, thematic name two and description file two are generated.
Wherein, the title of the corresponding thematic product of the thematic description of name two, is typically explanatory and exclusive 10 ~ 30 word
Accord with verbal description.
Describing file two includes the contents such as production department, production time, data source, purposes and range specification.It retouches
File two is stated to provide usually in the form of XML or JSON.
Step 4, special layer management: the grid obtained based on three-dimensional digital earth to step 2 shows element and step 3
The vector of acquisition shows data and carries out special layer management.
Above-mentioned special layer management, which is included in three-dimensional digital earth, to be created thematic classification based on figure layer relevant interface, creates
Special layer, control Layer Order, control figure layer, which are shown, to be hidden and generates time shaft according to phase information.
Step 5, lattices special topic visualizes: being configured according to the figure layer in step 4, based on three-dimensional digital earth to lattices
Special topic is visualized.
Above-mentioned lattices special topic visualization refers to throwing the grid tile that step 2f is obtained with industry universal method
It is being shown in three-dimensional digital earth in the form of local image after shadow conversion, and is showing thematic name among portion on the screen
One, legend one is shown in the screen lower right corner, and right button pop-up shows the description information in description file one with report form.
Step 6, vector class special topic visualizes: being configured according to the figure layer in step 4, based on three-dimensional digital earth to vector class
Special topic is visualized.
Above-mentioned vector class special topic visualization is referred to showing thematic name two among portion on the screen, be shown in the screen lower right corner
Legend two, right button pop-up shows the description information in description file two with report form, while showing in three-dimensional digital earth
Vector rendering objects sequence.
The method that vector rendering objects sequence is shown in three-dimensional digital earth, includes the following steps.
Step 6a obtains internal storage data to be rendered: vector rendering objects sequence parsed using three-dimensional digital earth,
Obtain memory array to be rendered.
Step 6b selects visual pattern: to every group of data in the memory array obtained in step 6a, according to polar plot
Element type, display parameters, attribute information etc. select visual pattern.
Step 6c, point visualization: being the data of vertex type to vector graphical element, generates display point by latitude and longitude coordinates
It sets, obtains dot shape and size by display parameters, point icon is obtained by symbolism specification and resource description, with scatterplot figure
Formula is visualized, and passes through the modes display attribute information such as size or label.
Step 6d, line visualization: being the data of line type to vector graphical element, generates line position by latitude and longitude coordinates interpolation
It sets, obtains line style, color, width by display parameters, line pattern is obtained by symbolism specification and resource description, with network
Or dynamic flow graph type is visualized, and passes through the modes display attribute information such as line width or label.
Step 6e, face visualization: being the data of noodles type to vector graphical element, generates face position by latitude and longitude coordinates interpolation
It sets, obtains face filling, color, boundary types by display parameters, face pattern is obtained by symbolism specification and resource, with region
Figure or heating power diagram form are visualized, and pass through the modes display attribute informations such as area size, color color range or label.
Step 6f, volume visualization: being the data of body type to vector graphical element, generates bottom surface position by latitude and longitude coordinates interpolation
It sets, obtains bottom surface filling, color, boundary and cylinder type by display parameters, body sample is obtained by symbolism specification and resource
Formula is visualized with three-dimensional column diagram form, and passes through histogram height, color color range, base surface area size or label etc.
Mode display attribute information.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail a variety of equivalents can be carried out to technical solution of the present invention within the scope of the technical concept of the present invention, this
A little equivalents all belong to the scope of protection of the present invention.
Claims (9)
1. a kind of remote sensing special topic product method for visualizing based on three-dimensional digital earth, characterized by the following steps:
Step 1, remote sensing special topic product data remote sensing special topic analysis of product date and classification: are input to analysis of product date center
Input interface；Analysis of product date center will be analyzed and be classified to received remote sensing special topic product data, and remote sensing is special
Topic product data are divided into raster data and vector data two types；
Step 2, raster data processing: the raster data in step 1 is handled, and obtaining three-dimensional digital earth can directly solve
The grid of analysis shows element；It includes grid tile, legend one, thematic name one and description file one that grid, which shows element,；
In the step 2, raster data processing is included the following steps: with obtaining the method that grid shows element
Step 2a obtains geography information: the file header or description information in raster data obtained according to step 1 obtains geographical
Information；Wherein, geography information includes the projection pattern and longitude and latitude range of raster data；
Step 2b obtains raster data: obtaining body data, i.e. raster data itself from the raster data that step 1 obtains；
Step 2c obtains style sheet one: style sheet one is obtained from the raster data that step 1 obtains, style sheet one includes display
Rule, color configuration, display resource path or description；
Step 2d obtains description information one: description information one is obtained from the raster data that step 1 obtains, description information one is wrapped
Include title, production time, source and the purposes of data product；
Step 2e, raster data stylization: the style sheet one obtained according to the step 2b raster data obtained and step 2c, to grid
Lattice data carry out stylized operation, thus by the new grid that former raster data is converted to setting pattern is consistent in style sheet one
Data；Raster data stylization operation includes that color mapping or color adjust；
Step 2f obtains grid tile: the new raster data that step 2e is obtained is combined with the step 2a geography information obtained,
Tile operation is carried out by the way of building pyramid and slice, to obtain grid tile data；
Step 2g generates legend one: the color configuration in style sheet one obtained according to step 2c generates common image text
The legend one of part format；
Step 2h generates thematic name one and description file one: the description information one obtained according to step 2d, generates one He of thematic name
File one is described；Wherein, thematic name one refers to the title of the corresponding thematic product of description；Describe file one include production department,
Production time, data source, purposes and range specification；
Step 3, vector data is handled: the vector data in step 1 being handled, obtaining three-dimensional digital earth can directly solve
The vector of analysis shows element；It includes vector rendering objects sequence, legend two, thematic name two and description file that vector, which shows element,
Two；
Step 4, special layer management: element is showed based on the grid that three-dimensional digital earth obtains step 2 and step 3 obtains
Vector show data carry out special layer management；
Step 5, lattices special topic visualizes: being configured according to the figure layer in step 4, based on three-dimensional digital earth to lattices special topic
It is visualized；
Step 6, vector class special topic visualizes: being configured according to the figure layer in step 4, based on three-dimensional digital earth to vector class special topic
It is visualized.
2. the remote sensing special topic product method for visualizing according to claim 1 based on three-dimensional digital earth, it is characterised in that:
In the step 1, the classification foundation at analysis of product date center is the body data type in remote sensing special topic product data, that is, is held
The data mode for carrying product core information is that raster data or vector data are classified；When the number of carrying product core information
According to form be raster data when, be classified as raster data；When the data mode for carrying product core information is vector data, then
It is classified as vector data；Wherein, raster data refers to the data for coming representation space atural object or phenomenon distribution in a regular array
It organizes, each data in tissue indicate the non-geometric attributive character of atural object or phenomenon；Vector data refers to passing through record
The mode of coordinate indicates point, line and the geographical entity of polygon.
3. the remote sensing special topic product method for visualizing according to claim 1 based on three-dimensional digital earth, it is characterised in that:
In the step 5, the visualization of lattices special topic is referred to after the grid tile that obtains step 2f carries out projection transform with part
Image form is shown in three-dimensional digital earth, and shows thematic name one among portion on the screen, aobvious in the screen lower right corner
Diagram example one, right button pop-up show the description information in description file one with report form.
4. the remote sensing special topic product method for visualizing according to claim 3 based on three-dimensional digital earth, it is characterised in that:
In the step 3, vector data processing is included the following steps: with obtaining the method that vector shows element
Step 3a obtains geological information: obtaining body data from the vector data of step 1, body data is vector data
The geological information for itself being included；
Step 3b obtains attribute information: attribute information is obtained from the vector data of step 1, attribute information, which refers to, believes geometry
Cease the extended description carried out, including business datum and statistical data；
Step 3c, obtain style sheet two: from the vector data of step 1 obtain style sheet two, style sheet two include display rule,
Color configuration, display resource path or description；
Step 3d obtains description information two: description information two is obtained from the vector data of step 1, description information two includes number
According to the title of product, production time, source and purposes；
Step 3e, production, line and face sequence: the geological information obtained for step 3a successively extracts geological information midpoint letter
Breath, line information and face information；Wherein, the point information of extraction generates point sequence；The line information of extraction generates line sequence column；The face of extraction
Information generates face sequence；
Step 3f, vector rendering objects sequence: the attribute information of point, line and face sequence, step 3b acquisition that step 3e is generated
And the style sheet two that step 3c is obtained combines, and generates vector rendering objects sequence；
Step 3g generates legend two: the color configuration in style sheet two obtained according to step 3c generates legend two；
Step 3h generates thematic name two and description file two: the description information two obtained according to step 3d, generates two He of thematic name
File two is described；Wherein, the title of the corresponding thematic product of the thematic description of name two；Describing file two includes production department, life
Produce time, data source, purposes and range specification.
5. the remote sensing special topic product method for visualizing according to claim 4 based on three-dimensional digital earth, it is characterised in that:
In the step 3, sequence refers to one group of data comprising same data structure；Vector rendering objects sequence refers to can be by
Three-dimensional digital earth directly parses and generates the description sequence of vector graphics, and every group of data in vector rendering objects sequence are wrapped
Type containing geometric graphic element, latitude and longitude coordinates, display parameters, symbolism specification, resource description and attribute information.
6. the remote sensing special topic product method for visualizing according to claim 5 based on three-dimensional digital earth, it is characterised in that:
In the step 6, the visualization of vector class special topic refers to showing thematic name two among portion on the screen, shows in the screen lower right corner
Legend two, right button pop-up shows the description information in description file two with report form, while showing in three-dimensional digital earth
Vector rendering objects sequence.
7. the remote sensing special topic product method for visualizing according to claim 6 based on three-dimensional digital earth, it is characterised in that:
In the step 6, the method for vector rendering objects sequence is shown in three-dimensional digital earth, comprising the following steps:
Step 6a obtains internal storage data to be rendered: being parsed, is obtained to vector rendering objects sequence using three-dimensional digital earth
Memory array to be rendered；
Step 6b selects visual pattern: to every group of data in the memory array obtained in step 6a, according to polar plot metaclass
Type, display parameters, attribute information select visual pattern；
Step 6c, point visualization: being the data of vertex type to vector graphical element, generates display point position by latitude and longitude coordinates, leads to
Cross display parameters and obtain dot shape and size, a point icon is obtained by symbolism specification and resource description, with scatterplot diagram form into
Row visualization, and pass through a size or label mode display attribute information；
Step 6d, line visualization: being the data of line type to vector graphical element, generates line position by latitude and longitude coordinates interpolation, leads to
It crosses display parameters and obtains line style, color, width, line pattern is obtained by symbolism specification and resource description, with network or move
State flow graph type is visualized, and passes through line width or label mode display attribute information；
Step 6e, face visualization: being the data of noodles type to vector graphical element, generates face position by latitude and longitude coordinates interpolation, leads to
Cross display parameters and obtain face filling, color, boundary types, by symbolism specification and resource acquisition face pattern, with administrative division map or
Heating power diagram form is visualized, and passes through area size, color color range or label mode display attribute information；
Step 6f, volume visualization: being the data of body type to vector graphical element, generates basal surface position by latitude and longitude coordinates interpolation,
Bottom surface filling, color, boundary and cylinder type are obtained by display parameters, body pattern is obtained by symbolism specification and resource,
It is visualized with three-dimensional column diagram form, and aobvious by histogram height, color color range, base surface area size or label mode
Show attribute information.
8. the remote sensing special topic product method for visualizing according to claim 1 based on three-dimensional digital earth, it is characterised in that:
In the step 4, special layer management, which is included in three-dimensional digital earth, to be created thematic classification based on figure layer relevant interface, creates
Special layer, control Layer Order, control figure layer, which are shown, to be hidden and generates time shaft according to phase information.
9. the remote sensing special topic product method for visualizing according to claim 1 based on three-dimensional digital earth, it is characterised in that:
In the step 1, remote sensing special topic product data refer to the relevant data of a special topic product, include thematic image data, vector number
According to, style sheet, thumbnail, effect picture and description information.
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| CN112800169B (en) * | 2021-04-15 | 2021-07-13 | 航天宏图信息技术股份有限公司 | Data matching method, device and equipment for synchronous belt satellite and storage medium |
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