CN115049759B - Linear map symbol drawing method and device for complex road network and server - Google Patents
Linear map symbol drawing method and device for complex road network and server Download PDFInfo
- Publication number
- CN115049759B CN115049759B CN202210971237.9A CN202210971237A CN115049759B CN 115049759 B CN115049759 B CN 115049759B CN 202210971237 A CN202210971237 A CN 202210971237A CN 115049759 B CN115049759 B CN 115049759B
- Authority
- CN
- China
- Prior art keywords
- linear map
- symbols
- symbol
- road data
- priority level
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Databases & Information Systems (AREA)
- Remote Sensing (AREA)
- Data Mining & Analysis (AREA)
- General Engineering & Computer Science (AREA)
- Processing Or Creating Images (AREA)
- Instructional Devices (AREA)
Abstract
The application discloses a method, a device and a server for drawing linear map symbols of a complex road network, which comprise the following steps: step 1, carrying out layering processing on each linear map symbol; step 2, configuring a first priority level for each road data according to the topological relation of the road data, and arranging the road data according to the first priority level; step 3, distributing the linear map symbols for each road data according to the collocation principle of the linear map symbols and the road data, and configuring a second priority level for each layer of linear map symbols; and 4, arranging the linear map symbols according to the second priority level to finish drawing the linear map symbols. The problem of linear symbol conflict is solved ingeniously, and the problem of low drawing efficiency of the linear symbols of the complex road network is improved by adopting an integral rendering mode.
Description
Technical Field
The application belongs to the field of electronic map drawing, and particularly relates to a drawing method, a drawing device and a server based on hierarchical symbols and complicated road network linear symbols with drawing priorities.
Background
In a Geographic Information System (GIS), when linear symbols collide, there are two types of processing methods, one is to process the local region where the collision occurs, and the other is to perform a global symbolization process.
The local treatment method mainly comprises a manual copying method and an intersection mask method; the manual copying method needs a large amount of repeated manual editing operation, and is low in efficiency, time-consuming and labor-consuming; the intersection mask method needs to use masks to shield the intersection parts of linear symbols, needs to carry out complicated road network communication and gland calculation, derives a large amount of surface fragment data, and is not beneficial to data simplification.
For example, chinese patent publication No. CN101783022a discloses an overall symbolization method for a road network based on painter's algorithm. Compared with a local area processing method, the method does not need to process conflicts independently, but solves the drawing conflicts by using a painter algorithm and a symbol deconstruction method, so that the efficiency is relatively high, however, the method needs to redesign the linear symbols in the symbol library and deconstruct the linear symbols into basic primitives, and the method needs to use the painter algorithm to calculate the drawing sequence of data, and is not suitable for being applied to the transformation of the existing system.
Therefore, a new method or apparatus for drawing linear map symbols of a complex road network is needed to solve the above problems.
Disclosure of Invention
In order to solve the defects of the prior art, the application provides a linear map symbol drawing method for a complex road network, which converts the conflict problem during rendering of the road linear symbols into the drawing priority problem of hierarchical symbols according to the topological relation of road data and the hierarchical standard of the complex road network, is more suitable for drawing the linear map symbols of the road data with the existing topological information, and realizes the rapid integral automatic rendering of the complex road network.
The technical effect that this application will reach is realized through following scheme:
according to a first aspect of the present invention, there is provided a method for drawing a linear map symbol of a complex road network, comprising the steps of:
and 4, arranging the linear map symbols according to the second priority level to finish drawing the linear map symbols.
Preferably, in step 1, the linear map symbol is divided into two layers, namely an upper layer symbol and a lower layer symbol; in step 4, all upper layer symbols as well as the lower layer symbols are arranged according to a second priority.
Preferably, the line width of the upper layer symbol in the same linear map symbol is smaller than that of the lower layer symbol, and the central base lines of the upper layer symbol and the lower layer symbol coincide when drawing.
Preferably, in step 2, the first priority level of the road data is configured only according to the capping relationship according to the topological relationship of the road data, and the first priority level of the road data in the capping layer is lower.
Preferably, the road data under the same first priority level is continuously divided into the drawing priority levels according to the complex road network level.
Preferably, the drawing priority levels in the complex road network level sequentially include from high to low: freeways, expressways, main roads, secondary roads and branches.
Preferably, in step 4, the upper layer symbols and the lower layer symbols are drawn in sequence from the lower to the higher according to the second priority.
According to a second aspect of the present invention, there is provided a linear map symbol drawing device for a complex road network, comprising a hierarchical processing module, a road data sorting module, a linear map symbol allocating module, and a linear map symbol drawing module, wherein:
the hierarchical processing module is used for carrying out hierarchical processing on each linear map symbol;
the road data sorting module is used for configuring a first priority level for each road data according to the topological relation of the road data, and arranging the road data from top to bottom according to the descending order of the first priority levels;
the linear map symbol distribution module is used for distributing a linear map symbol for each road data according to the collocation principle of the linear map symbols and the road data, and allocating a second priority level for each layer of linear map symbols;
and the linear map symbol drawing module is used for arranging the linear map symbols from top to bottom according to the descending order of the second priority level to finish the drawing of the linear map symbols.
According to a third aspect of the present invention, there is provided a server comprising: at least one processor and memory;
the memory stores a computer program, and the at least one processor executes the computer program stored in the memory to implement any one of the above-described linear map symbol drawing methods for a complex road network.
According to a fourth aspect of the present invention, there is provided a computer-readable storage medium, wherein a computer program is stored, and when the computer program is executed, the computer program realizes the method for drawing linear map symbols of a complex road network.
The embodiment of the invention has the following advantages:
according to the method, the device, the server and the storage medium for drawing the linear map symbols of the complex road network, the linear map symbols are subjected to layering processing, the drawing priority level is determined according to the capping relation of road data and the complex road network level, the layered linear map symbols are drawn in sequence according to the drawing priority level, the problem of linear symbol collision is solved ingeniously, and the problem of low drawing efficiency of the linear symbols of the complex road network is improved by adopting an integral rendering mode.
Drawings
In order to more clearly illustrate the embodiments or prior art solutions of the present application, the drawings needed for describing the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and that other drawings can be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a flowchart illustrating a method for drawing a linear map symbol of a complex road network according to an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a layering process of linear map symbols according to an embodiment of the present application;
fig. 3 is a schematic structural diagram illustrating a linear map symbol collision in a complex road network according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a complex road network after linear map symbols are processed by the method in an embodiment of the present application;
fig. 5 is a block diagram illustrating a linear map symbol drawing apparatus for a complex road network according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a server according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following embodiments and accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, the method for drawing a linear map symbol of a complex road network in the present embodiment mainly includes the following steps:
s110: carrying out layering processing on each linear map symbol;
in this step, as shown in fig. 2, the linear map symbol is divided into two layers, namely an upper layer symbol and a lower layer symbol;
the line width of the upper layer symbol in the same linear map symbol is smaller than that of the lower layer symbol, and the central base lines of the upper layer symbol and the lower layer symbol are overlapped when the linear map symbol is drawn.
The width of upper strata symbol and lower floor's symbol is inconsistent, and when drawing two intersection line data, intersection's linear map symbol is located between upper strata symbol and the lower floor's symbol, and the lower floor's symbol is sheltered from, and the upper strata symbol can cover the unnecessary lines of linear map symbol, has not only sheltered from in disorder unnecessary lines, can also embody current road and the road intersection is in the connected state, and is more pleasing to the eye, and distinguishes more easily.
The colors of the upper layer symbol and the lower layer symbol can be distinguished, for example, the color depth of the lower layer symbol is greater than that of the upper layer symbol, and after the upper layer symbol covers the lower layer symbol, two sides of the lower layer symbol can be partially exposed, so that the edge of the road data can be clearer after the upper layer symbol and the lower layer symbol are overlapped, and the visual effect is improved; in the subsequent drawing process, the visual effect of communication can be reflected after the intersection lines cover the lower-layer symbols.
S120, configuring a first priority level for each road data according to the topological relation of the road data, and arranging the road data according to the first priority level;
in this step, the first priority level of the road data is configured only according to the capping relationship based on the topological relationship of the road data, and the first priority level of the road data located on the bottom layer of the capping layer is lower.
The method may further include step S121: and continuously dividing and drawing priority levels of the road data under the same first priority level according to the complex road network level. The drawing priority levels in the complex road network level sequentially comprise from high to low: freeways, expressways, main roads, secondary roads and branches.
S130, distributing the linear map symbols for each road data according to the collocation principle of the linear map symbols and the road data, and configuring a second priority level for each layer of linear map symbols;
in this step, a second priority level is allocated to both the layered upper layer symbol and the layered lower layer symbol, so that the capping of the layered symbols in the intersection line is realized according to the second priority level in the drawing process.
S140, arranging the linear map symbols according to the second priority level to finish drawing the linear map symbols;
the method comprises the following steps: all upper layer symbols as well as the lower layer symbols are arranged according to a second priority. And sequentially drawing the upper layer symbols and the lower layer symbols according to the sequence of the second priority from low to high.
In a specific example, the linear map symbol conflict in the complex road network shown in fig. 3 is mainly reflected in that redundant lines exist at road junctions, redundant short lines appear at segmented data junctions, road intersections, gland overlapping areas and the like of the same road, so that the complex road network not only gives a messy feeling to people, but also cannot reflect the topological relation of the road and does not conform to the drawing specification; also influence user's in the in-service use in-process and watch, the connection of difficult discernment road or gland relation, extremely influence and use experience.
The method for redrawing the linear map symbols in the complex road network by using the method in the embodiment comprises the following steps:
As shown in fig. 2, taking the symbol 10 representing the city expressway as an example, the symbol 10 may be decomposed into an upper symbol 11 that is slightly narrow (RGB (255,182,118)) and a lower symbol 12 that is slightly wide (RGB (247,161,86)), and the center base lines of the two-layer line symbols coincide.
If the road linear symbols in the existing symbol library are designed hierarchically, only a method for setting single-layer symbol drawing priority needs to be added into the symbol classes, so as to set the drawing priority of the hierarchical symbols.
And 3, further dividing the priority in the step 2 according to the complex road network level. Only one road data is in the priority 7, so further division is not needed, and in the priority 1, the roads 2, 3, 4 and 5 are respectively a main road, a secondary main road and a branch road, so that further division into 3 priorities, respectively priorities 3, 2 and 1, is needed.
And 4, according to the symbol collocation rule, the roads 1, 2, 3, 4 and 5 respectively correspond to 4 symbols, namely a speedway symbol, a main trunk symbol, a secondary trunk symbol and a branch symbol. The specific road data and the prioritization of the linear map symbols are shown in table 1:
table 1: prioritization of road data and linear map symbols
| Linear map symbol | Drawing priority | Corresponding road data numbering |
| Tributary |
1 | 5 |
| Sub trunk |
1 | 4 |
| Trunk |
1 | 3 |
| Trunk |
1 | 2 |
| Branch |
2 | 5 |
| Upper symbol of |
3 | 4 |
| Upper layer symbols on |
4 | 3 |
| Upper layer symbols on |
4 | 2 |
| Express way lower layer symbol | 7 | 1 |
| Express highway upper layer symbols | 8 | 1 |
The drawing priority of each layer of symbols of each layer symbol is determined according to the above-established drawing priority, the lower layer symbols of the data of the same capping layer can be designed to be the same drawing priority, and the drawing priority of the upper layer symbols is determined according to the road grade. Thus, the problem of the drawing conflict of the road linear symbols is converted into the problem of the drawing priority of the hierarchical symbols.
And 5, rendering symbols of each layer in sequence from low to high according to the drawing priority in the table 1. The drawing effect diagram is shown in fig. 4.
The linear map symbols drawn by the method, the branch lower-layer symbols, the secondary trunk lower-layer symbols and the main trunk lower-layer symbols all belong to the lowest grades, and are drawn preferentially; the branch road, the secondary trunk road and the main trunk road are sequentially arranged from low to high according to the level of the complex road network, so that the branch road, the secondary trunk road and the main trunk road are arranged according to the drawing sequence, wherein the upper-layer symbol of the main trunk road is positioned at the upper layer, the linear symbol protruding in the drawing process of the secondary trunk road and the branch road can be shielded, and the attractiveness of the main trunk road, the secondary trunk road and the branch road after the drawing is finished is maintained; the express way is arranged at the uppermost layer in the capping relation and does not form an intersection relation with other roads, so that the drawing priority is highest.
According to the method, the linear map symbols are layered, the drawing priority level is determined according to the capping relation of road data and the complex road network level, and the layered linear map symbols are drawn in sequence according to the drawing priority level, so that the problem of linear symbol conflict is solved ingeniously, and the problem of low drawing efficiency of the complex road network linear symbols is solved by adopting an integral rendering mode.
The method adopts a mode of processing the linear map symbols in a layered mode, and is simpler and higher in efficiency compared with the traditional mode of deconstructing the symbols into the primitives; and the priority is determined only by using the road topological relation, compared with the method of calculating the drawing sequence of data by adopting a painter algorithm, the method is simpler and has higher efficiency.
As shown in fig. 5, another embodiment of the present invention discloses a linear map symbol drawing device for a complex road network, which mainly includes a hierarchical processing module 501, a road data sorting module 502, a linear map symbol allocating module 503, and a linear map symbol drawing module 504, wherein:
the hierarchical processing module 501 is configured to perform hierarchical processing on each linear map symbol;
the road data sorting module 502 is configured to configure a first priority for each road data according to a topological relation of the road data, and arrange the road data from top to bottom according to a descending order of the first priority for the road data;
the linear map symbol allocation module 503 is configured to allocate the linear map symbol to each road data according to a collocation principle of the linear map symbols and the road data, and allocate a second priority level to the linear map symbol of each layer;
the linear map symbol drawing module 504 is configured to arrange the linear map symbols from top to bottom according to the descending order of the second priority, complete drawing and output of the linear map symbols.
The device is used for processing the linear map symbols in a layering mode, determining the drawing priority level according to the capping relation of road data and the complex road network level, and drawing the layered linear map symbols in sequence according to the drawing priority level, so that the problem of linear symbol conflict is solved ingeniously, and the problem of low drawing efficiency of the complex road network linear symbols is solved by adopting an integral rendering mode.
As shown in fig. 6, a server according to an embodiment of the present invention includes: at least one processor 602 and memory 601; the memory 601 stores a computer program, and the processor 602 executes the computer program stored in the memory 601 to realize the above-described linear map symbol drawing method for a complex road network.
An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed, the method for drawing the linear map symbol of the complex road network can be implemented.
It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or otherwise described herein.
Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus.
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be oriented in other different ways, such as by rotating it 90 degrees or at other orientations, and the spatially relative descriptors used herein interpreted accordingly.
In the foregoing detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like numerals typically identify like components, unless context dictates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The method for drawing the linear map symbols of the complex road network is characterized by comprising the following steps:
step 1, carrying out layering processing on each linear map symbol;
step 2, according to the topological relation of the road data, only configuring a first priority level of the road data according to the capping relation, and arranging the road data according to the first priority level when the first priority level of the road data at the bottom layer of the capping layer is lower; the road data under the same first priority level are continuously divided into drawing priority levels according to the complex road network level;
step 3, distributing the linear map symbols for each road data according to the collocation principle of the linear map symbols and the road data, and configuring a second priority level for each layer of linear map symbols;
and 4, arranging the linear map symbols according to the second priority level to finish drawing the linear map symbols.
2. The method for drawing linear map symbols of a complex road network according to claim 1, wherein in step 1, said linear map symbols are divided into two layers, an upper layer symbol and a lower layer symbol; in step 4, all upper layer symbols as well as the lower layer symbols are arranged according to a second priority.
3. The method as claimed in claim 2, wherein the line width of the upper layer symbol is smaller than the line width of the lower layer symbol, and the central base line of the upper layer symbol and the central base line of the lower layer symbol coincide with each other when drawing.
4. The method for drawing linear map symbols of a complex road network according to claim 1, wherein the drawing priority level in the complex road network level sequentially from high to low comprises: freeways, expressways, main roads, secondary roads and branches.
5. The method for drawing linear map symbols of a complex road network according to claim 2, wherein said upper layer symbols and said lower layer symbols are drawn in order of second priority from lower to higher in step 4.
6. The linear map symbol drawing device of the complex road network is characterized by comprising a layering processing module, a road data sorting module, a linear map symbol distribution module and a linear map symbol drawing module, wherein:
the hierarchical processing module is used for carrying out hierarchical processing on each linear map symbol;
the road data sorting module is used for configuring a first priority level of the road data according to the topological relation of the road data and the capping relation, and the lower the first priority level of the road data at the bottom layer of the capping layer is, the lower the first priority level of the road data is, the road data are arranged according to the first priority level; the road data under the same first priority level are continuously divided into drawing priority levels according to the complex road network level;
the linear map symbol distribution module is used for distributing a linear map symbol for each road data according to the collocation principle of the linear map symbols and the road data, and allocating a second priority level for each layer of linear map symbols;
and the linear map symbol drawing module is used for arranging the linear map symbols from top to bottom according to the descending order of the second priority level to finish the drawing of the linear map symbols.
7. A server, comprising: at least one processor and memory;
the memory stores a computer program, and the at least one processor executes the computer program stored in the memory to implement the line map symbol drawing method of a complex road network according to any one of claims 1 to 5.
8. A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method for drawing a line map symbol of a complex road network according to any one of claims 1 to 5 is implemented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210971237.9A CN115049759B (en) | 2022-08-15 | 2022-08-15 | Linear map symbol drawing method and device for complex road network and server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210971237.9A CN115049759B (en) | 2022-08-15 | 2022-08-15 | Linear map symbol drawing method and device for complex road network and server |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115049759A CN115049759A (en) | 2022-09-13 |
| CN115049759B true CN115049759B (en) | 2022-10-25 |
Family
ID=83168078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210971237.9A Active CN115049759B (en) | 2022-08-15 | 2022-08-15 | Linear map symbol drawing method and device for complex road network and server |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115049759B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0737073A (en) * | 1993-07-20 | 1995-02-07 | Clarion Co Ltd | Map data base for navigation system and map retrieval and display system for map data base |
| CN101783022A (en) * | 2010-02-03 | 2010-07-21 | 南京师范大学 | Method for integrally symbolizing road net based on painter algorithm |
| CN102063833A (en) * | 2010-12-17 | 2011-05-18 | 中国科学院计算技术研究所 | Method for drawing synchronously displayed symbols and marks of dot map layers of map |
| CN108021623A (en) * | 2017-11-21 | 2018-05-11 | 湖北大学 | A kind of method and system for improving map symbol and assigning power objectivity |
| CN109558200A (en) * | 2018-12-04 | 2019-04-02 | 中国航空无线电电子研究所 | A kind of style configuration method of airborne map vector |
-
2022
- 2022-08-15 CN CN202210971237.9A patent/CN115049759B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0737073A (en) * | 1993-07-20 | 1995-02-07 | Clarion Co Ltd | Map data base for navigation system and map retrieval and display system for map data base |
| CN101783022A (en) * | 2010-02-03 | 2010-07-21 | 南京师范大学 | Method for integrally symbolizing road net based on painter algorithm |
| CN102063833A (en) * | 2010-12-17 | 2011-05-18 | 中国科学院计算技术研究所 | Method for drawing synchronously displayed symbols and marks of dot map layers of map |
| CN108021623A (en) * | 2017-11-21 | 2018-05-11 | 湖北大学 | A kind of method and system for improving map symbol and assigning power objectivity |
| CN109558200A (en) * | 2018-12-04 | 2019-04-02 | 中国航空无线电电子研究所 | A kind of style configuration method of airborne map vector |
Non-Patent Citations (6)
| Title |
|---|
| GIS中地图输出对符号库建立的影响;孙庆辉等;《测绘通报》;20001025(第10期);第24-25页 * |
| 地图数据库图形输出中要素关系处理;刘纪平;《测绘学报》;19940825(第03期);第64-70页 * |
| 地形图交通网要素的自动绘制;余海冲等;《测绘信息与工程》;20060630(第03期);第49-51页 * |
| 数据库中小比例尺普通地图制图方法;李正祥等;《测绘通报》;20171220;第136-140页 * |
| 线状地图符号设计及其制图表达研究;车森等;《测绘通报》;20130925(第09期);第98-100页 * |
| 顾及符号关系处理的地图符号库设计与实现;梅洋等;《测绘通报》;20070825(第08期);第69-73页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115049759A (en) | 2022-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10083517B2 (en) | Segmentation of an image based on color and color differences | |
| Regnauld | Contextual building typification in automated map generalization | |
| JP6534436B2 (en) | Updating pin locations in the graphical user interface of the electronic design automation tool | |
| Coombes | Multiple dimensions of settlement systems: coping with complexity | |
| CN102147821B (en) | Decomposing integrated circuit layout method | |
| CN102818571B (en) | Data hierarchy and organization method and device capable of fast displaying road conditions | |
| Grötschel et al. | Packing Steiner trees: A cutting plane algorithm and computational results | |
| CN105976698B (en) | Road rendering method and device in a kind of electronic map | |
| US20060164415A1 (en) | Method, apparatus and computer program product enabling a dynamic global parameterization of triangle meshes over polygonal domain meshes | |
| CN106708837B (en) | Interest point searching method and device | |
| CN111291811B (en) | Region dividing and classifying method, device and computer readable storage medium | |
| Stanislawski et al. | Generalisation operators | |
| US7580927B1 (en) | Quadtree center tile/boundary tile optimization | |
| WO2020248659A1 (en) | Delivery coverage determination method and apparatus, and electronic device and storage medium | |
| DE102011102826A1 (en) | Geometric restriction of a driving route using a navigation system | |
| CN111539432A (en) | Method for extracting urban road by using multi-source data to assist remote sensing image | |
| CN110827048B (en) | Geographic region segmentation method and device based on road network and electronic equipment | |
| CN115049759B (en) | Linear map symbol drawing method and device for complex road network and server | |
| CN114418836B (en) | Data processing method, device, equipment and medium | |
| CN111524445A (en) | Map generation method and device, electronic equipment and readable storage medium | |
| CN110489511A (en) | Contour edge fit elevation error correcting method, system and electronic equipment and medium | |
| CN113177046B (en) | Road network topological graph generation method, device, equipment and storage medium | |
| CN105654542B (en) | virtual airport model surface texture projection rendering method | |
| CN101477559B (en) | Geographic information perception method based on area coloring | |
| CN115474206A (en) | Real-time people number determination method and device, electronic equipment and storage medium |
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 |