CN112256896A - CAD (computer-aided design) primitive automatic identification and replacement method - Google Patents
CAD (computer-aided design) primitive automatic identification and replacement method Download PDFInfo
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Abstract
The invention discloses a CAD graphic primitive automatic identification and replacement method, belonging to the technical field of CAD graphic primitive automatic identification and replacement, comprising an element sample template library, an element template, a key attribute module, an identification and replacement system, a key value graphic primitive module and a position coordinate system module, wherein the identification and replacement system is bidirectionally connected with the element sample template library, the template data in the element sample template library is based on basic graphic primitives, graphic block graphic primitives are updated in the using process, the identification and replacement system establishes the position coordinate system module according to the element template, and the element template comprises the key value graphic primitive module. After the element sample template library is gradually improved, the whole volume is carried out, the whole engineering drawing is identified and replaced in batches, the drawing can be designed before follow-up application, advanced design experience is absorbed, workload is reduced, and design efficiency is improved.
Description
Technical Field
The invention relates to the technical field of CAD graphic primitive automatic identification and replacement, in particular to a CAD graphic primitive automatic identification and replacement method.
Background
CAD is an english abbreviation of computer aided Design (CAD-computer aided Design), and refers to a process of manufacturing and simulating physical Design by using computer software, and showing features such as appearance, structure, color, texture and the like of newly developed commodities.
The earliest applications of CAD were in automotive manufacturing, aerospace, and electronics industry production for large companies. Later, along with the evolution of CAD realization technology and the change of computer price, the application range of the CAD realization technology is gradually widened, in the engineering field, the CAD is undoubtedly the design software which is most frequently used by each design unit, the project is finally stored in the form of an electronic edition, the project adopts self-defined drawing frames to indicate the design unit, the design project and the like due to different projects, all drawings are arranged by using drawing numbers and page numbers, and are finally printed and published, at present, various professional software which is secondarily developed by the CAD is popularized in each design unit, but most of the programs adopt the process of firstly establishing a drawing base of graphic elements, then utilizing the graphic elements of the drawing base to carry out CAD drawing, and finally extracting data or storing the data in real time in the drawing process, but before using the professional software, the CAD which is filed needs the identification and extraction of the software to achieve the purpose of applying the previous design drawings, the method has the advantages that advanced design experience is absorbed, workload is reduced, and design efficiency is improved, a CAD graphic primitive automatic identification and replacement technology is provided, drawings built by basic graphic primitives such as picture blocks, straight lines, multi-segment lines, circles and characters in the original automatic CAD or other CAD environments can be identified and replaced into template graphic primitives with attributes, and identification and extraction of professional CAD software are facilitated.
Disclosure of Invention
The invention aims to provide a CAD graphic primitive automatic identification and replacement method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a CAD graphic element automatic identification and replacement method comprises an element sample template library, an element template, a key attribute module, an identification and replacement system, a key value graphic element module and a position coordinate system module, wherein the identification and replacement system is connected with the element sample template library in a bidirectional mode, the identification and replacement system establishes the position coordinate system module according to the element template, the element template comprises the key value graphic element module, and the method comprises the following steps:
s101: picking up an element template and storing the appointed attribute characters in an element sample template library to obtain the composition of the graphic elements of the element template;
s102: taking any one of the elements in the element template elements as a key value element module and taking a key attribute module of the key value element module;
s103: identifying and replacing the element templates, identifying that the element templates in the replaced drawing are all in a pattern block format with attributes, traversing the drawing, searching and obtaining a matched primitive according to a key value primitive module, and establishing a position coordinate system module;
s104: sequentially obtaining other primitives from the primitive of the element template, and moving the coordinates of the primitive of the template to the position coordinates in the graph according to the relative coordinates of the primitive module of the key value and the matched primitives in the graph;
s105: and (3) primitive comparison: as shown in step S102, comparing whether the key attribute modules are consistent;
s106: until all the primitives in the element template are compared and matched consistently, the primitives matched in the drawing can be converged into a block, and corresponding attributes (matched according to the positions of characters) are added;
s107: identifying the replacement component is complete.
Further, the template data in the component sample template library is based on the basic primitive, and the tile primitives are updated during the using process.
Furthermore, the element template comprises a plurality of primitives, and any one primitive can be used as a key value primitive module.
Further, the key attribute module of the key-value primitive module comprises a picture block, a straight line, a plurality of lines, a circle and characters.
Further, the identification and replacement system identifies key attribute modules of the key-value primitive modules, establishes a position coordinate system module, and coordinates other key-value primitive modules in the element template onto the position coordinate system module.
Further, the identification and replacement system transmits the new image metadata back to the component sample template library after the identification and replacement are completed based on the template data in the component sample template library.
Further, the component sample template library updates the template data according to the new graph metadata.
Furthermore, after the element sample template library is gradually improved, the whole volume is carried out, the whole engineering drawing is subjected to batch identification and replacement, and the block primitives with the attributes are replaced for rapid identification and use of professional software.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a CAD graphic primitive automatic identification and replacement method, firstly establishing an element sample template library, then using the element sample template library to carry out CAD drawing, finally extracting data or storing the data in real time in the drawing process, before using professional software, using an identification and replacement system to identify and extract the archived CAD drawing so as to achieve the purposes of mechanically applying the previous design drawing, absorbing advanced design experience, reducing workload and improving design efficiency, after identifying and replacing elements, comparing whether each key attribute module is consistent or not, further reducing the distortion probability in the replacement process, updating the template data according to new image metadata by the element sample template library, after the element sample template library is gradually finished, carrying out the whole volume, identifying and replacing the batch quantity of the whole engineering drawing, replacing the graphic blocks with attributes for the professional software to rapidly identify and use, the drawing built by basic primitives such as picture blocks, straight lines, multi-segment lines, circles, characters and the like is used for identifying and replacing the template primitives with attributes, so that the identification and extraction of professional CAD software are facilitated.
Drawings
FIG. 1 is a business flow diagram of the present invention;
FIG. 2 is a working diagram of an identification and replacement system and a library of component sample templates in accordance with the present invention;
FIG. 3 is a schematic diagram of the operation of the present invention;
FIG. 4 is a flow chart of element screening according to the present invention;
fig. 5 is a block diagram of the process of the present invention.
In the figure: 1. a library of component sample templates; 2. an element template; 3. a key attribute module; 4. identifying a replacement system; 5. a key value primitive module; 6. a position coordinate system module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Referring to fig. 1-5, a CAD primitive automatic identification and replacement method includes a component sample template library 1, a component template 2, a key attribute module 3, an identification and replacement system 4, a key value primitive module 5, and a position coordinate system module 6, where the identification and replacement system 4 connects the component sample template library 1 bidirectionally, the identification and replacement system 4 establishes the position coordinate system module 6 according to the component template 2, and the component template 2 includes the key value primitive module 5. The method comprises the following steps:
s101: picking up the element template 2 and storing the designated attribute characters into the element sample template library 1 to obtain the primitive composition of the element template 2, wherein the template data in the element sample template library 1 is based on the basic primitives, the primitives of the block are updated in the using process, and the element template 2 is disassembled into the basic primitives, so that the identification is convenient;
s102: the element template 2 comprises a plurality of primitives, any one primitive can be used as a key value primitive module 5, any one primitive in the primitives of the element template 2 is used as the key value primitive module 5, and a key attribute module 3 of the key value primitive module 5 is obtained, the key attribute module 3 of the key value primitive module 5 comprises basic primitive attributes such as blocks, straight lines, multi-segment lines, circles, characters and the like, and the key information of the primitives can be retained to the maximum extent by utilizing the key attribute module 3 of the primitives, so that the key information of the primitives can be stored when the recognition and replacement system 4 carries out recognition and replacement on the primitives, and the probability of replacement distortion is reduced;
s103: identifying the replacement element template 2, identifying the replacement system 4 based on the template data in the element sample template library 1, transmitting the new image metadata to the element sample template library 1 by the identification replacement system 4 after the identification replacement is finished, identifying the element templates 2 in the replaced drawing in the image with the pattern block format with the attribute, traversing the image, searching to obtain the matched pixels according to the key value pixel module 5, establishing a position coordinate system module 6,
s104: then, other primitives are sequentially obtained from the primitives of the element template 2, and the coordinates of the element template 2 are moved to the position coordinates in the drawing according to the relative coordinates of the key value primitive module 5 and the matched primitives in the drawing, so that the authenticity of the information of the element template 2 can be maintained;
s105: and (3) primitive comparison: as shown in step S102, comparing whether the key attribute modules 3 are consistent, so as to further reduce the probability of distortion in the replacement process;
s106: until all the primitives in the element template 2 are compared and matched consistently, the primitives matched in the drawing can be converged into a block, and corresponding attributes are added for matching according to the positions of characters;
s107: the method comprises the steps that identification and replacement of elements are completed, the element sample template library 1 updates template data according to new image metadata, after the element sample template library 1 is gradually completed, the whole volume is rolled, batch identification and replacement of the whole engineering drawing are performed, the replaced image block primitives with the attributes are used for rapid identification of professional software, drawings built by basic primitives such as image blocks, straight lines, multi-segment lines, circles, characters and the like in the original AutoCAD or other CAD environments are used for identification and replacement of the template primitives with the attributes, and identification and extraction of the professional CAD software are facilitated.
In summary, the following steps: the invention provides a CAD graphic element automatic identification and replacement method, which comprises an element sample template library 1, an element template 2, a key attribute module 3, an identification and replacement system 4, a key value graphic element module 5 and a position coordinate system module 6, wherein the identification and replacement system 4 is connected with the element sample template library 1 in a two-way manner, the identification and replacement system 4 establishes the position coordinate system module 6 according to the element template 2, the element template 2 comprises the key value graphic element module 5, the element template 2 is picked up and designated attribute characters are stored in the element sample template library 1 to obtain the graphic element composition of the element template 2, the template data in the element sample template library 1 is based on the basic graphic elements, the graphic element blocks are updated in the using process, the element template 2 is disassembled into the basic graphic elements, and the identification is convenient; the element template 2 comprises a plurality of primitives, any one primitive can be used as a key value primitive module 5, any one primitive in the primitives of the element template 2 is used as the key value primitive module 5, and a key attribute module 3 of the key value primitive module 5 is obtained, the key attribute module 3 of the key value primitive module 5 comprises basic primitive attributes such as blocks, straight lines, multi-segment lines, circles, characters and the like, and the key information of the primitives can be retained to the maximum extent by utilizing the key attribute module 3 of the primitives, so that the key information of the primitives can be stored when the recognition and replacement system 4 carries out recognition and replacement on the primitives, and the probability of replacement distortion is reduced; identifying a replacement element template 2, identifying the replacement system 4 based on template data in the element sample template library 1, transmitting new image metadata to the element sample template library 1 by the identification replacement system 4 after the identification replacement is finished, identifying the element templates 2 in the replaced drawing in the block format with attributes, traversing the drawing, searching to obtain a matched primitive according to a key value primitive module 5, establishing a position coordinate system module 6, sequentially obtaining other primitives from the elements of the element template 2, and moving the coordinates of the element template 2 to the position coordinates in the drawing according to the relative coordinates of the key value primitive module 5 and the matched primitives in the drawing; comparing the primitives, namely comparing whether the key attribute modules 3 are consistent or not, further reducing the probability of distortion in the replacement process until all the primitives in the element template 2 are completely compared and matched consistently, converging the primitives matched in the drawing into a block, and adding corresponding attributes to match according to the positions of characters; and identifying and replacing elements, updating template data according to the new image metadata by the element sample template library 1, gradually completing the element sample template library 1, carrying out the whole volume, carrying out batch identification and replacement on the whole engineering drawing, and replacing the image block primitives with the attributes after replacement for quick identification and use by professional software.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. A CAD graphic primitive automatic identification and replacement method is characterized in that: including component example template storehouse (1), component template (2), key attribute module (3), discernment substitution system (4), key value primitive module (5) and position coordinate system module (6), discernment substitution system (4) two-way connection component example template storehouse (1), discernment substitution system (4) establish position coordinate system module (6) according to component template (2), component template (2) contain key value primitive module (5), and it includes following step:
s101: picking up an element template (2) and storing specified attribute characters into an element sample template library (1) to obtain a graphic element composition of the element template (2);
s102: taking any one of the primitives of the element template (2) as a key value primitive module (5) and taking a key attribute module (3) of the key value primitive module;
s103: identifying and replacing the element templates (2), identifying that the element templates (2) in the replaced drawing are all in a pattern block format with attributes, traversing the drawing, searching according to a key value primitive module (5) to obtain a matched primitive, and establishing a position coordinate system module (6);
s104: sequentially obtaining other primitives from the primitives of the element template (2), and moving the coordinates of the primitives of the template to position coordinates in the graph according to the relative coordinates of the key value primitive module (5) and the matched primitives in the graph;
s105: and (3) primitive comparison: as shown in step S102, comparing whether the key attribute modules (3) are consistent;
s106: until all the primitives in the element template (2) are compared and matched consistently, the matched primitives in the drawing can be converged into a block, and corresponding attributes are added;
s107: identifying the replacement component is complete.
2. A CAD primitive automatic identification and replacement method according to claim 1, characterized in that the template data in the component sample template library (1) is based on basic primitives, and the tile primitives are updated during use.
3. A CAD primitive automatic identification and replacement method according to claim 1, characterized in that the element template (2) comprises a plurality of primitives, any one of which can be used as a key-value primitive module (5).
4. The CAD graphic element automatic identification and replacement method as claimed in claim 1, wherein the key attribute module (3) of the key value graphic element module (5) comprises a picture block, a straight line, a multi-segment line, a circle and a character.
5. A CAD primitive automatic identification and replacement method according to claim 1, characterized in that the identification and replacement system (4) identifies the key attribute module (3) of the key-value primitive module (5) and then establishes the position coordinate system module (6), and coordinates other key-value primitive modules (5) in the element template (2) onto the position coordinate system module (6).
6. A CAD primitive automatic identification and replacement method according to claim 5, characterized in that said identification and replacement system (4) transmits new image metadata back to the component sample template library (1) after the identification and replacement is completed based on the template data in the component sample template library (1).
7. A method for automatic CAD primitive recognition and replacement according to claim 1, characterized in that the component sample template library (1) updates the template data according to the new drawing metadata.
8. The CAD graphic primitive automatic identification and replacement method according to claim 1, characterized in that after the component sample template library (1) is gradually completed, the whole volume is performed, the whole engineering drawing is subjected to batch identification and replacement, and the replaced graphic primitive with the attribute is used for rapid identification by professional software.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117473941A (en) * | 2023-12-28 | 2024-01-30 | 广东美创希科技有限公司 | Drawing processing method and device, electronic equipment and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117473941A (en) * | 2023-12-28 | 2024-01-30 | 广东美创希科技有限公司 | Drawing processing method and device, electronic equipment and storage medium |
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Application publication date: 20210122 |