CN108492711A - A kind of drawing electronic map method and device - Google Patents
A kind of drawing electronic map method and device Download PDFInfo
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- CN108492711A CN108492711A CN201810306765.6A CN201810306765A CN108492711A CN 108492711 A CN108492711 A CN 108492711A CN 201810306765 A CN201810306765 A CN 201810306765A CN 108492711 A CN108492711 A CN 108492711A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
- G09B29/003—Maps
- G09B29/006—Representation of non-cartographic information on maps, e.g. population distribution, wind direction, radiation levels, air and sea routes
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Abstract
The invention discloses a kind of drawing electronic map method and device of Electronic Mapping technical field, this method is as follows：S1：The geography information of target area is acquired in the way of remote sensing mapping；S2：The pretreatment of image is carried out to the information of the ground map of acquisition；S3：Feature extraction is carried out to pretreated map datum, improves matched reliability；S4：It is matched using the method for Least-Square Matching for the image feature value of extraction；S5：Generate the reference map of electronic map, and it is uploaded in database, the present invention can acquire various landform and geography information in target area in real time, pass through the operation of feature extraction and characteristic matching, the high reference map of accuracy rate is produced, the fields such as traffic, electric power, mapping, medical treatment, military affairs, urban planning and environment are can be widely applied to.
Description
Technical field
The invention discloses a kind of drawing electronic map method and devices, specially Electronic Mapping technical field.
Background technology
With the continuous development of science and technology and people's living standards continue to improve, electronic map are accurate with its data
Really, update cycle short feature, can intuitively show the information such as atural object geomorphic feature, road information, building construction
Etc. advantages, the status occupied in daily life also ever more important.Therefore, to for surveying and drawing electronic map electronically
For figure surveying and mapping technology, the mapping efficiency and mapping precision of electronic map how are improved, is a particularly important problem.
For now, industry mainstream using artificial field operation measurement by the way of to each building in target drawing area
Related data measure, it is this to being drawn to the electronic map of target area based on the related data measured
The consumption of mode human resources is big, the heavy workload of mapping, the drafting inefficiency of the map and precision of drafting is not high, influences user
Experience to electronic map.For this purpose, we have proposed a kind of drawing electronic map method and devices to come into operation, it is above-mentioned to solve
Problem.
Invention content
The purpose of the present invention is to provide a kind of drawing electronic map method and devices, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the present invention provides the following technical solutions：A kind of drawing electronic map method, the tool of this method
Steps are as follows for body：
S1：The geography information of target area is acquired in the way of remote sensing mapping；
S2：The pretreatment of image is carried out to the information of the ground map of acquisition；
S3：Physics and geometrical property to scenery in pretreated map datum make the gray scale of image regional area generate
The discontinuity point for the image greyscale curved surface that significant change is formed carries out feature extraction, improves matched reliability；
S4：It is matched, is obtained initial using the method for Least-Square Matching for the image feature value of extraction
Matching position；
S5：The seam after split image and gray scale difference are inlayed and eliminated to the image of areal, are generated electronically
The reference map of figure, and be uploaded in database.
Preferably, in the step S2, the pretreatment of image includes that filtering removes dry, histogram equalization, Scaned map shadow
The foundation of mapping relations between the geometric correction of picture, electronic map image geographical coordinate and remote sensing image pixel coordinate.
Preferably, in the step S3, feature extraction is divided into planar feature extraction, linear feature extraction and point-like character and carries
It takes, the wherein extraction of planar feature is carried out using edge detection operator, and specific computational methods areWherein x,
Y is respectively the lateral coordinates value and longitudinal coordinate value where planar characteristic point.
Preferably, in the step S4, the mathematical model of Least-Square Matching isIts
In (x1,y1) it is target window image, (x2,y2) it is search window image, x1And y1It is origin to take the central point of window image.
Preferably, a kind of drawing electronic map device, the device include information acquisition module, data preprocessing module, spy
Levy extraction module, characteristic matching module, reference map generation module, electronic map system, cache map module, system database,
Map display module safeguards class Modules, annotation management module and map search module；
Described information acquisition module is for being acquired the geography information of target area；
The data preprocessing module is for being filtered except dry, histogram equalization and map are swept the information of acquisition
The data prediction of the geometric correction of shading picture；
The characteristic extracting module, which is used for the physics of scenery and geometrical property in pretreated map datum, makes image office
The discontinuity point that the gray scale in portion region generates the image greyscale curved surface that significant change is formed carries out feature extraction；
The characteristic matching module is matched for the image feature value of extraction, obtains initial Image Matching position；
The control point that the reference map generation module is used to automatically extract from remote sensing image and electronic map, is allowed using Le
Moral multinomial corrects remote sensing image using anti-solution as the transforming function transformation function corrected, distant after being corrected to areal
The seam and gray scale difference of split image, birthdate reference map are inlayed, eliminated to sense image；
The cache map module improves system effectiveness, reduces the reaction time of system for storing map datum, when with
When family accesses a certain region of map, electronic map system will read the data of the region close region, and be stored in map
In cache module, inquired convenient for user；
The system database is used for real-time storage electronic map information；
The operation of movement, amplification, diminution and the positioning of the map display module charge map, according to the behaviour of user
Make, first corresponding map datum is searched for from the cache map module, if not having correspondingly in the cache map module
Diagram data, then the cache map module request is sent into the system database, obtain current map datum；
The classification that class Modules are safeguarded for increasing, updating or deleting management label newly；
The annotation management module be used to make user indicate on the electronic map needed for the place that uses, and be illustrated；
The map search module is used to complete the search to place on electronic map.
Preferably, the lattice that the data transmission between the electronic map system and the cache map module passes through XML stream
Formula carries out.
Preferably, it is also provided with data query port on the system database, is used for the service request according to client,
The system database is inquired, query result is then sent to subscription client.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention can acquire various in target area in real time
Landform and geography information, by the operation of feature extraction and characteristic matching, the high reference map of production accuracy rate can extensive use
In fields such as traffic, electric power, mapping, medical treatment, military affairs, urban planning and environment.
Description of the drawings
Fig. 1 is work flow diagram of the present invention；
Fig. 2 is present system functional block diagram.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of drawing electronic map method, this method it is specific
Steps are as follows：
S1：The geography information of target area is acquired in the way of remote sensing mapping；
S2：The pretreatment of image is carried out to the information of the ground map of acquisition, the pretreatment of image includes that filtering removes dry, histogram
It is mapped between equalization, the geometric correction of Scaned map image, electronic map image geographical coordinate and remote sensing image pixel coordinate
The foundation of relationship；
S3：Physics and geometrical property to scenery in pretreated map datum make the gray scale of image regional area generate
The discontinuity point for the image greyscale curved surface that significant change is formed carries out feature extraction, improves matched reliability, feature extraction point
It is extracted for planar feature extraction, linear feature extraction and point-like character, the wherein extraction of planar feature uses edge detection operator
It carries out, specific computational methods areWherein x, y are respectively lateral coordinates value where planar characteristic point and vertical
To coordinate value；
S4：It is matched, is obtained initial using the method for Least-Square Matching for the image feature value of extraction
The mathematical model of matching position, Least-Square Matching isWherein (x1,y1) it is target window shadow
Picture, (x2,y2) it is search window image, x1And y1It is origin to take the central point of window image；
S5：The seam after split image and gray scale difference are inlayed and eliminated to the image of areal, are generated electronically
The reference map of figure, and be uploaded in database.
The present invention also provides a kind of drawing electronic map device, which includes information acquisition module, data prediction
Module, characteristic extracting module, characteristic matching module, reference map generation module, electronic map system, cache map module, system
Database, map display module safeguard class Modules, annotation management module and map search module；
Described information acquisition module is for being acquired the geography information of target area；
The data preprocessing module is for being filtered except dry, histogram equalization and map are swept the information of acquisition
The data prediction of the geometric correction of shading picture；
The characteristic extracting module, which is used for the physics of scenery and geometrical property in pretreated map datum, makes image office
The discontinuity point that the gray scale in portion region generates the image greyscale curved surface that significant change is formed carries out feature extraction；
The characteristic matching module is matched for the image feature value of extraction, obtains initial Image Matching position；
The control point that the reference map generation module is used to automatically extract from remote sensing image and electronic map, is allowed using Le
Moral multinomial corrects remote sensing image using anti-solution as the transforming function transformation function corrected, distant after being corrected to areal
The seam and gray scale difference of split image, birthdate reference map are inlayed, eliminated to sense image；
The cache map module improves system effectiveness, reduces the reaction time of system for storing map datum, when with
When family accesses a certain region of map, electronic map system will read the data of the region close region, and be stored in map
In cache module, inquired convenient for user；
The system database is used for real-time storage electronic map information；
The operation of movement, amplification, diminution and the positioning of the map display module charge map, according to the behaviour of user
Make, first corresponding map datum is searched for from the cache map module, if not having correspondingly in the cache map module
Diagram data, then the cache map module request is sent into the system database, obtain current map datum；
The classification that class Modules are safeguarded for increasing, updating or deleting management label newly；
The annotation management module be used to make user indicate on the electronic map needed for the place that uses, and be illustrated；
The map search module is used to complete the search to place on electronic map.
Wherein, the format that the data transmission between the electronic map system and the cache map module passes through XML stream
It carries out, data query port is also provided on the system database, for the service request according to client, inquire the system
System database, is then sent to subscription client by query result.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of drawing electronic map method, it is characterised in that：This method is as follows：
S1：The geography information of target area is acquired in the way of remote sensing mapping；
S2：The pretreatment of image is carried out to the information of the ground map of acquisition；
S3：It is apparent that physics and geometrical property to scenery in pretreated map datum make the gray scale of image regional area generate
The discontinuity point for changing the image greyscale curved surface formed carries out feature extraction, improves matched reliability；
S4：It is matched using the method for Least-Square Matching for the image feature value of extraction, obtains initial matching
Position；
S5：The seam after split image and gray scale difference are inlayed and eliminated to the image of areal, generate electronic map
Reference map, and be uploaded in database.
2. a kind of drawing electronic map method according to claim 1, it is characterised in that：In the step S2, image
Pretreatment include filtering except dry, histogram equalization, the geometric correction of Scaned map image, electronic map image geographical coordinate and
The foundation of mapping relations between remote sensing image pixel coordinate.
3. a kind of drawing electronic map method according to claim 1, it is characterised in that：In the step S3, feature carries
It takes and is divided into planar feature extraction, linear feature extraction and point-like character extraction, the wherein extraction of planar feature uses edge detection
Operator carries out, and specific computational methods areWherein x, y are respectively the lateral coordinates value where planar characteristic point
And longitudinal coordinate value.
4. a kind of drawing electronic map method according to claim 1, it is characterised in that：In the step S4, minimum two
The mathematical model for multiplying Image Matching isWherein (x1,y1) it is target window image, (x2,y2) it is to search
Rope window image, x1And y1It is origin to take the central point of window image.
5. a kind of drawing electronic map device, it is characterised in that：The device include information acquisition module, data preprocessing module,
Characteristic extracting module, characteristic matching module, reference map generation module, electronic map system, cache map module, system data
Library, map display module safeguard class Modules, annotation management module and map search module；
Described information acquisition module is for being acquired the geography information of target area；
The data preprocessing module is for being filtered except dry, histogram equalization and Scaned map shadow the information of acquisition
The data prediction of the geometric correction of picture；
The characteristic extracting module, which is used for the physics of scenery and geometrical property in pretreated map datum, makes image partial zones
The discontinuity point that the gray scale in domain generates the image greyscale curved surface that significant change is formed carries out feature extraction；
The characteristic matching module is matched for the image feature value of extraction, obtains initial Image Matching position；
The control point that the reference map generation module is used to automatically extract from remote sensing image and electronic map, it is more using Legendre
Item formula corrects remote sensing image using anti-solution as the transforming function transformation function corrected, the remote sensing shadow after being corrected to areal
Seam and gray scale difference as being inlayed, being eliminated split image, birthdate reference map；
The cache map module improves system effectiveness, reduces the reaction time of system, when user visits for storing map datum
When asking a certain region of map, electronic map system will read the data of the region close region, and be stored in cache map
In module, inquired convenient for user；
The system database is used for real-time storage electronic map information；
The operation of movement, amplification, diminution and the positioning of the map display module charge map, depending on the user's operation, first
Corresponding map datum is searched for from the cache map module, if there is no corresponding map number in the cache map module
According to then the cache map module sends request into the system database, obtains current map datum；
The classification that class Modules are safeguarded for increasing, updating or deleting management label newly；
The annotation management module be used to make user indicate on the electronic map needed for the place that uses, and be illustrated；
The map search module is used to complete the search to place on electronic map.
6. a kind of drawing electronic map device according to claim 5, it is characterised in that：The electronic map system and institute
The data transmission stated between cache map module is carried out by the format of XML stream.
7. a kind of drawing electronic map device according to claim 5, it is characterised in that：It is also set on the system database
Data query port has been set, for the service request according to client, the system database has been inquired, then sends out query result
It send to subscription client.
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| CN110704556A (en) * | 2019-09-03 | 2020-01-17 | 镇江市勘察测绘研究院 | Geographic information acquisition method based on GIS technology |
| CN111597284A (en) * | 2020-04-29 | 2020-08-28 | 武汉子雨科技有限公司 | Method for rapidly extracting surveying and mapping geographic information data |
| CN112100304A (en) * | 2020-09-15 | 2020-12-18 | 山东省地矿工程勘察院 | Geographic information acquisition method based on GIS technology |
| CN112651919A (en) * | 2021-01-26 | 2021-04-13 | 南京超辰信息科技有限公司 | Remote sensing image surveying and mapping and processing system |
| CN112880662A (en) * | 2021-01-12 | 2021-06-01 | 长春工程学院 | Method and system for generating field geological and geomorphic shape map |
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Application publication date: 20180904 |