CN104408161A - Mould CAD drawing query based on similarity query and management method - Google Patents
Mould CAD drawing query based on similarity query and management method Download PDFInfo
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- CN104408161A CN104408161A CN201410735622.9A CN201410735622A CN104408161A CN 104408161 A CN104408161 A CN 104408161A CN 201410735622 A CN201410735622 A CN 201410735622A CN 104408161 A CN104408161 A CN 104408161A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- 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 invention discloses a mould CAD drawing query based on similarity query and a management method, according to the following steps: putting the drawing in storage in a batch mode, extracting the basic information of the CAD drawing and writing the basic information into the database in a batch mode; extracting the geometry moment of the section of the mould as the shaft characteristic; extracting the basic element characteristic of the midpoint, line and surface and the like of the drawing; taking the extracted characteristic as the similarity calculating parameter, defining the similarity percentage according to the requirement and contrasting the shape characteristic of different drawings, calculating the similarity of the different drawings according to the mathematic operation, thereby obtaining the final search result. The mould CAD drawing query based on similarity query and the management method are simple in method and high in query precision.
Description
Technical field
The invention belongs to drawing classified inquiry administrative skill field, relate to the Mould CAD drawing inquiry based on similarity search and management method.
Background technology
Mould is the key equipment of various material or formed product, and along with passage of time, many producers have accumulated a large amount of Design of Dies drawing.On the other hand, Design of Dies personnel are when developing new die, and need often with reference to history mould drawing, therefore, mould management of blueprint software systems are arisen at the historic moment.Mould management of blueprint software systems known are at present carry out management of blueprint and inquiry according to key word substantially, and these key words comprise time, designer, purposes etc.Current querying method is too complicated, and inquiry precision is low, can not inquire about fast and effectively.The present invention adopts similarity to carry out management of blueprint and inquiry, and Design of Dies personnel can be helped quickly and easily accurately to find required history drawing, greatly improves mould development speed.
Summary of the invention
The object of the present invention is to provide the Mould CAD drawing inquiry based on similarity search and management system, solve existing a large amount of history mould drawing querying method complicated, the problem that the precision of inquiry is low.
The technical solution adopted in the present invention is carried out according to following steps:
Step 1: drawing batch warehouse-in, by the Back ground Information of CAD drawing extract and batch input in database;
Step 2: extract the geometric moment of mould section as shape facility;
Step 3: to extract in drawing the fundamental element features such as point, line, surface;
Step 4: using the feature of extraction in step 2, step 3 as Similarity Measure parameter, defines similarity number percent as required, contrasts the shape facility of different drawing, according to ranking operation, calculate the similarity between different drawing, obtain final Query Result.
The invention has the beneficial effects as follows that method is simple, inquiry precision is high.
Accompanying drawing explanation
Fig. 1 is the inquiry of Mould CAD drawing and the management method schematic diagram that the present invention is based on similarity search.
Embodiment
The invention provides the Mould CAD drawing inquiry based on similarity search and management system, this System Implementation process as shown in Figure 1, comprising:
(1) drawing batch warehouse-in, enterprises have accumulated a large amount of drawing, the Back ground Information of these drawings is extracted also batch input and, in database, carries out unified management and inquiry.These Back ground Informations mainly contain: deviser, design time, purposes, the graphic feature etc. of drawing.Wherein the graphic feature of drawing is the key message for similarity search.
(2) drawing based on similarity is inquired about, and user can adopt the drawing in multiple inquiry mode Query Database, such as: inquired about by CAD drawing, inquired about by simple diagram, or photo is inquired about.
(3) similarity is the arithmetic number of (0%-100%), can be inputted by user as required, according to this similarity, the mould section CAD drawing of system auto-returned some, corresponding Design of Dies CAD can be found to scheme according to this sectional drawing, once user finds this Design of Dies figure, the function that CAD drawing is checked in detail and downloaded can be used, the drawing in database is operated.
The element extraction technology of the present invention's application CAD drawing, by element extraction such as the point, line, surface of drawing out, calculates the geometric properties square parameter of mould; According to these geometric parameters, then calculate the similarity of two width drawings; The last inquiry carrying out mould drawing according to similarity:
(1) based on definition and the calculating of the similarity of geometric properties square:
The sectional feature of mould is an irregular closed geometric figure, and graphics shape feature has computing velocity soon relative to characteristics of image, and feature interpretation feature accurately, therefore, the present invention extracts the shape facility of die drawing as Similarity Measure parameter.
The moment characteristics main geometric properties of image-region, be also called geometric moment, the girth of figure, area are also special geometric properties squares.There is the invariant features of the characteristics such as rotation, translation, yardstick, so be called again not bending moment due to it.In image procossing, geometric invariant moment can represent object as an important feature, feature can carry out the operations such as classification to image accordingly, therefore, second gordian technique of the present invention be extract mould section geometric moment as shape facility.
On the basis of these two gordian techniquies, once be extracted the shape facility of drawing, contrast the shape facility of different drawing, can according to simple weighted computing, calculate the similarity between different drawing, similarity is defined as the parameter of a similarity number percent (0-100%), similarity parameter is carried out sequence and returns to user, and user can have access to required mould drawing.
(2) the element extraction technology of CAD drawing:
One secondary drawing is drawn by primitive geometric element such as designer's point, line, surface, and geometric properties is hidden in these elements behind.Therefore, extracting in AutoCAD drawing the fundamental elements such as point, line, surface, is the 3rd gordian technique of the present invention.AutoCAD is the CAD drawing business software of designing mould drawing, and occupy the market of CAD design more than 90%, so the general format of mould drawing is .dwg form, the data structure of dwg file belongs to the secret of the trade of autodesk, inc..But some individual or entities in the world, in order to impel DWG graphical format to become disclosed CAD standard, are devoted to the research and development of DWG file form, wherein, OpenDWG is League of Nations's tissue.This is organized in for many years on Research foundation, and provide the function library (being called for short ODT) of a set of direct access DWG file, software developer can, so as to developing application, make system can access DWG file independent of outside AutoCAD platform.The open function library (ODT) of third party that present invention employs OpenDWG accesses DWG file, and this function library can be called under the software development environments such as VC, VB.
Empirical tests, it is 80% that the present invention defines similarity, then Query Result has 18.
The above is only to better embodiment of the present invention, not any pro forma restriction is done to the present invention, every any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (1)
1., based on the inquiry of Mould CAD drawing and the management system of similarity search, it is characterized in that: carry out according to following steps:
Step 1: drawing batch warehouse-in, by the Back ground Information of CAD drawing extract and batch input in database;
Step 2: extract the geometric moment of mould section as shape facility;
Step 3: to extract in drawing the fundamental element features such as point, line, surface;
Step 4: using the feature of extraction in step 2, step 3 as Similarity Measure parameter, defines similarity number percent as required, contrasts the shape facility of different drawing, according to ranking operation, calculate the similarity between different drawing, obtain final Query Result.
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| CN201410735622.9A CN104408161A (en) | 2014-12-08 | 2014-12-08 | Mould CAD drawing query based on similarity query and management method |
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| CN201410735622.9A CN104408161A (en) | 2014-12-08 | 2014-12-08 | Mould CAD drawing query based on similarity query and management method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105183950A (en) * | 2015-08-14 | 2015-12-23 | 深圳市向杉科技有限公司 | Mobile terminal based method and system for referring to engineering drawing |
| CN108388676A (en) * | 2018-03-27 | 2018-08-10 | 广东工业大学 | A kind of mold data matching process, apparatus and system based on simulated annealing |
| CN109029333A (en) * | 2018-07-18 | 2018-12-18 | 浙江地科土地勘测规划设计有限公司 | A kind of land area proofreading method |
| CN110378302A (en) * | 2019-07-24 | 2019-10-25 | 广东电网有限责任公司 | A kind of customer engineering drawing intelligent identifying system based on PDF format Drawings and documents |
| CN110866317A (en) * | 2019-11-23 | 2020-03-06 | 广东科龙模具有限公司 | Design tool kit reconstruction method based on product historical information and design behavior analysis |
| CN111143925A (en) * | 2019-12-18 | 2020-05-12 | 万翼科技有限公司 | Drawing labeling method and related product |
| CN112131734A (en) * | 2020-09-18 | 2020-12-25 | 杭州筑峰科技有限公司 | Die matching method and system applied to curtain wall aluminum profile |
| CN115004221A (en) * | 2020-02-06 | 2022-09-02 | 三菱电机株式会社 | Image analysis device, image analysis method, and image analysis program |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105183950A (en) * | 2015-08-14 | 2015-12-23 | 深圳市向杉科技有限公司 | Mobile terminal based method and system for referring to engineering drawing |
| CN105183950B (en) * | 2015-08-14 | 2018-12-25 | 深圳市向杉科技有限公司 | A kind of method and system for consulting engineering drawing based on mobile terminal |
| CN108388676A (en) * | 2018-03-27 | 2018-08-10 | 广东工业大学 | A kind of mold data matching process, apparatus and system based on simulated annealing |
| CN109029333A (en) * | 2018-07-18 | 2018-12-18 | 浙江地科土地勘测规划设计有限公司 | A kind of land area proofreading method |
| CN110378302A (en) * | 2019-07-24 | 2019-10-25 | 广东电网有限责任公司 | A kind of customer engineering drawing intelligent identifying system based on PDF format Drawings and documents |
| CN110866317A (en) * | 2019-11-23 | 2020-03-06 | 广东科龙模具有限公司 | Design tool kit reconstruction method based on product historical information and design behavior analysis |
| CN110866317B (en) * | 2019-11-23 | 2023-06-30 | 广东科龙模具有限公司 | Design tool kit reconstruction method based on product history information and design behavior analysis |
| CN111143925A (en) * | 2019-12-18 | 2020-05-12 | 万翼科技有限公司 | Drawing labeling method and related product |
| CN115004221A (en) * | 2020-02-06 | 2022-09-02 | 三菱电机株式会社 | Image analysis device, image analysis method, and image analysis program |
| CN112131734A (en) * | 2020-09-18 | 2020-12-25 | 杭州筑峰科技有限公司 | Die matching method and system applied to curtain wall aluminum profile |
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Application publication date: 20150311 |