CN104537098B - CAD diagram paper search method based on GIS technology - Google Patents
CAD diagram paper search method based on GIS technology Download PDFInfo
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- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
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Abstract
The present invention provides a kind of CAD diagram paper search method based on GIS technology, it is necessary first to during management of blueprint, sets up the index relative of " drawing coding --- object's position "；The content for obtaining drawing to be associated reflects the edge feature point of object's position, and the coordinate of each characteristic point is obtained by the position mark in drawing；The relationship maps of drawing coding and object's position are generated according to the coordinate information of acquisition, the mapping relations are stored as a GIS format space index files in the way of GIS graphical elements；When carrying out drawing retrieval, region interested is specified by way of carrying out region drafting in generalized information system, thus relationship maps concordance list and all drawings associated with the region are found out.The present invention has access to drawing material in real time available for patrol officer is moved, and lifts O＆M efficiency, the problem of effectively solving in the past by text or content retrieval drawing inefficiency.
Description
Technical field
The present invention relates to a kind of drawing search method, and in particular to a kind of CAD diagram paper search method based on GIS technology.
Background technology
It is widely used, is particularly set in urban design, building in all kinds of manufacturing business of CAD system at home and abroad
The fields such as meter have a wide range of applications.With the extensive use of CAD diagram paper, drawing is largely accumulated, and how these drawings is carried out
Effectively management, quick-searching are as one of focus studied instantly.
The CAD diagram paper retrieval of text is currently based on, is to extract that the crucial text message of its content can be summarized from drawing, such as
Designer, design content keyword etc., are named as designation of drawing or set up corresponding contingency table, drawing is inquired about with it.But this
Plant retrieval mode to be limited by strict naming standard, different production units and producer can not such as observe the standard well, will
Directly result in the decline of recall precision and accuracy.
The CAD diagram paper retrieval of content is currently based on, is geological information and the difference portion of figure in drawing information
Spatial relationship is retrieved to drawing between part, and the geometric properties information and its spatial relationship information of drawing are extracted first, is made
Preserved for its characteristic information into fixed character storehouse, when user designs new drawing, submit sketch to system and through system from
It is dynamic to contrast, filter out similar drawing.This retrieval mode, more is the angle from designer, it is considered to have answering for drawing
With property, complexity is high, and parser is complex.
In actual applications, except the designer of drawing, many non-professional users are carried out according to business demand
The retrieval of drawing, accordingly, it would be desirable to which a kind of convenient, efficient CAD diagram paper search method, layout design person, user can be given simultaneously
The approach of one quick-searching CAD diagram paper is provided.
The content of the invention
The problem of present invention exists for above-mentioned prior art makes improvements, i.e., the technical problem to be solved in the present invention is to carry
For a kind of CAD diagram paper search method based on GIS technology,
In order to solve the above-mentioned technical problem, the invention provides following technical scheme：
A kind of CAD diagram paper search method based on GIS technology, comprises the following steps：
S1, firstly the need of during management of blueprint, set up the index relative of " drawing is encoded --- object's position "；
S2, the content of acquisition drawing to be associated reflect the edge feature point of object's position, and the position passed through in drawing is marked
Note obtains the coordinate of each characteristic point；
S3, the relationship maps according to the coordinate information of acquisition generation drawing coding and object's position, the mapping relations are with GIS
The mode of graphical element is stored as a GIS format space index files；
S4, carry out drawing retrieval when, in generalized information system carry out region drafting by way of specify area interested
Domain, thus relationship maps concordance list and finds out all drawings associated with the region.
In addition, retrieving can be expanded directly to position position or periphery by the GPS positioning system of mobile terminal
Certain buffering range region；Thus relationship maps concordance list and all drawings associated with the region are found out.
Further, the relationship maps of drawing coding and object's position are generated according to the coordinate information of acquisition, the mapping is closed
System is stored as a GIS format space index file steps in the way of GIS graphical elements：
A newly-built GIS form is faced as figure layer, for storing " drawing encodes --- object's position " mapping relations
Figure layer is indexed, such as：Index.shp, is the attribute field that its increase by one is used to store drawing coding, such as：Image_NO；
According to acquired each angular coordinate information, a polygon key element is drawn in index figure layer index.shp, and
And by drawing number storage and the polygonal attribute field Image_NO.
Further, when carrying out drawing retrieval, specify interested by way of carrying out region drafting in generalized information system
Region, thus relationship maps concordance list and find out all drawing steps associated with the region：In generalized information system, utilize
The instrument of customization draws a polygon, and the polygon is the region interested specified by user；System is corresponding by the region
Space face key element with index figure layer index.shp in all space faces key element be compared, figure layer will be indexed
With the performance of the former topological relation it is " intersecting ", "comprising", the key element of " by comprising " all screen in index.shp.
Further, the certain buffering range area in position or periphery is directly positioned by the GPS positioning system of mobile terminal
Domain；Thus relationship maps concordance list and all drawing steps associated with the region are found out：Marched in hand-held mobile terminal uncommon
When hoping near the region for checking drawing, or building, installations and facilities, the GPS location functional localization user institute of mobile terminal is utilized
In position；According to the range size in the region for wishing inquiry, the buffering of certain distance is carried out to position, buffering is formed polygon
Shape, the polygon intersects comprising the region interested to user or with it；System is by the corresponding space face key element in the region and rope
All space faces key element drawn in figure layer index.shp is compared, and by index figure layer index.shp, is opened up with the former
The relation of flutterring is shown as " intersecting ", "comprising", the key element of " by comprising " are all screened.
The beneficial effects of the invention are as follows index information by being obtained during early stage management of blueprint, only with locus phase
Close, independent of the complicated algorithm and pattern built on the basis of pattern analysis, retrieval result has strict uniqueness；
Index information in the present invention during early stage management of blueprint by obtaining, and it is right in retrieving to be not related to
The identification and analysis of drawing content, therefore do not limited by the form of associated drawing, drawing can be with any file checked
Mode is stored, such as PDF format, JPG forms.
CAD diagram paper in the present invention refers generally to include the drawing of certain area spatial positional information, mostly planar design
Figure, can carry out drawing association and retrieval with this method.In addition, separately there is two kinds of drawing also to include based on GIS technology
The category of retrieval：1) include locus but the drawing of a key element may be shown as in generalized information system, as under small scale
The relevant design drawing of certain building, for such drawing, can be numbered and be write direct in the attribute field of a feature object,
Realize associate management；2) part of appliance of the universal design drawing, such as certain model of locus is not included, for such figure
Paper, can integrate and be retrieved based on two methods of text and GIS technology, i.e.,：The model code that the part of appliance can be identified is same
When write-in designation of drawing and generalized information system in device attribute field in, the equipment that any one same type is inquired about in generalized information system
Part, can retrieve relative drawing.
To sum up, the present invention can be used for moving patrol officer has access to drawing material in real time, lifts O＆M efficiency, effectively solve with
The problem of toward by text or content retrieval drawing inefficiency.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, the reality with the present invention
Applying example is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the flow chart of the CAD diagram paper search method based on GIS technology；
Fig. 2 is there are the three types associated between self defined area and index figure layer object.
Embodiment
As shown in Figure 1-2, the present invention discloses a kind of CAD diagram paper search method based on GIS technology, comprises the following steps：
S1, firstly the need of during management of blueprint, set up the index relative of " drawing is encoded --- object's position "；
S2, the content of acquisition drawing to be associated reflect the edge feature point of object's position, and the position passed through in drawing is marked
Note obtains the coordinate of each characteristic point；
S3, the relationship maps according to the coordinate information of acquisition generation drawing coding and object's position, the mapping relations are with GIS
The mode of graphical element is stored as a GIS format space index files；
S4, carry out drawing retrieval when, in generalized information system carry out region drafting by way of specify area interested
Domain, thus relationship maps concordance list and finds out all drawings associated with the region.
In addition, retrieving can be expanded directly to position position or periphery by the GPS positioning system of mobile terminal
Certain buffering range region；Thus relationship maps concordance list and all drawings associated with the region are found out.
The relationship maps of drawing coding and object's position are generated according to the coordinate information of acquisition, the mapping relations are schemed with GIS
The mode of shape key element is stored as a GIS format space index file steps：
A newly-built GIS form is faced as figure layer, for storing " drawing encodes --- object's position " mapping relations
Figure layer is indexed, such as：Index.shp, is the attribute field that its increase by one is used to store drawing coding, such as：Image_NO；
According to acquired each angular coordinate information, a polygon key element is drawn in index figure layer index.shp, and
And by drawing number storage and the polygonal attribute field Image_NO.
When carrying out drawing retrieval, region interested is specified by way of carrying out region drafting in generalized information system, by
This relationship maps concordance list simultaneously finds out all drawing steps associated with the region：In generalized information system, the work of customization is utilized
Tool draws a polygon, and the polygon is the region interested specified by user；System will by the corresponding space face in the region
Element is compared with all space faces key element in index figure layer index.shp, will index in figure layer index.shp, with
The performance of the former topological relation is " intersecting ", "comprising", the key element of " by comprising " are all screened.
The certain buffering range region in position or periphery is directly positioned by the GPS positioning system of mobile terminal；Thus close
Connection map index table simultaneously finds out all drawing steps associated with the region：Marched in hand-held mobile terminal and wish to check drawing
Region, or building, near installations and facilities when, utilize the GPS location functional localization user position of mobile terminal；According to
Wish the range size in the region of inquiry, the buffering of certain distance is carried out to position, form buffering polygon, the polygon
Intersect comprising the region interested to user or with it；System is by the corresponding space face key element in the region with indexing figure layer
All space faces key element in index.shp is compared, and will index in figure layer index.shp, with the former topological relation
Show as " intersecting ", "comprising", the key element of " by comprising " are all screened.
To sum up, index information is only related to locus by being obtained during early stage management of blueprint in the present invention, no
The complicated algorithm built on the basis of pattern analysis and pattern are relied on, retrieval result has strict uniqueness, available for moving
Dynamic patrol officer has access to drawing material in real time, lifts O＆M efficiency, effectively solves to imitate by text or content retrieval drawing in the past
The problem of rate is low.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality
Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.All essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (5)
1. a kind of CAD diagram paper search method based on GIS technology, it is characterised in that comprise the following steps：
S1, firstly the need of during management of blueprint, set up the index relative of " drawing is encoded --- object's position "；
S2, the content of acquisition drawing to be associated reflect the edge feature point of object's position, are obtained by the position mark in drawing
Take the coordinate of each characteristic point；
S3, the relationship maps according to the coordinate information of acquisition generation drawing coding and object's position, the mapping relations are with GIS figures
The mode of key element is stored as a GIS format space index files；
S4, carry out drawing retrieval when, in generalized information system carry out region drafting by way of specify region interested, by
This relationship maps concordance list simultaneously finds out all drawings associated with the region.
2. the CAD diagram paper search method according to claim 1 based on GIS technology, it is characterised in that retrieving is logical
The GPS positioning system for crossing mobile terminal directly positions the certain buffering range region in position or periphery；Thus relationship maps are indexed
Table simultaneously finds out all drawings associated with the region.
3. the CAD diagram paper search method according to claim 1 based on GIS technology, it is characterised in that according to the seat of acquisition
The relationship maps of information generation drawing coding and object's position are marked, the mapping relations are stored as one in the way of GIS graphical elements
GIS format space index file steps：
A newly-built GIS form is faced as figure layer, the index of " drawing encodes --- object's position " mapping relations for storing
Figure layer, is the attribute field Image_NO that its increase by one is used to store drawing coding；
According to acquired each angular coordinate information, a polygon key element is drawn in index figure layer, and by drawing number
It is stored in the polygonal attribute field Image_NO.
4. the CAD diagram paper search method according to claim 1 based on GIS technology, it is characterised in that carrying out drawing inspection
Suo Shi, region interested is specified by way of carrying out region drafting in generalized information system, thus relationship maps concordance list and is looked into
Find out all drawing steps associated with the region：In generalized information system, a polygon is drawn using the instrument of customization, this is more
Side shape is the region interested specified by user；System is all in figure layer with indexing by the corresponding space face key element in the region
Space face key element is compared, and will in index figure layer with the performance of the former topological relation be " intersecting ", "comprising", " be wrapped
Containing " key element all screen.
5. the CAD diagram paper search method according to claim 1 based on GIS technology, it is characterised in that pass through mobile terminal
GPS positioning system directly positions the certain buffering range region in position or periphery；Thus relationship maps concordance list and find out
All drawing steps associated with the region：Marched in hand-held mobile terminal and wish the region for checking drawing, or building, equipment are set
When applying nearby, the GPS location functional localization user position of mobile terminal is utilized；According to the scope in the region for wishing inquiry
Size, the buffering of certain distance is carried out to position, forms buffering polygon, and the polygon includes the area interested to user
Domain is intersected with it；The corresponding space face key element in the region is compared system with all space faces key element in index figure layer
Analysis will in index figure layer with the performance of the former topological relation be " intersecting ", "comprising", the key element of " by comprising " are all filtered out
Come.
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Address after: 210000 No.23, Changqing street, moling street, Jiangning District, Nanjing City, Jiangsu Province (Jiangning Development Zone) Patentee after: Nanjing Longkun Suchang industrial Internet Co., Ltd Address before: 211106, No. 199, Middle Road, Jiangning Development Zone, Nanjing, Jiangsu Patentee before: NANJING LUCULENT CO., LTD. |