CN107730557A - A kind of fast parameter reverse method - Google Patents
A kind of fast parameter reverse method Download PDFInfo
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- CN107730557A CN107730557A CN201710874581.5A CN201710874581A CN107730557A CN 107730557 A CN107730557 A CN 107730557A CN 201710874581 A CN201710874581 A CN 201710874581A CN 107730557 A CN107730557 A CN 107730557A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/50—Depth or shape recovery
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2200/00—Indexing scheme for image data processing or generation, in general
- G06T2200/08—Indexing scheme for image data processing or generation, in general involving all processing steps from image acquisition to 3D model generation
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- General Physics & Mathematics (AREA)
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- Computer Vision & Pattern Recognition (AREA)
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- Software Systems (AREA)
- Image Processing (AREA)
Abstract
The invention discloses a kind of fast parameter reverse method, the main information acquisition system formed using camera and frock, collection exemplar sized data simultaneously exports the pictorial information of collection, pictorial information is after the software processing in information preprocessing system, when three-dimensional drawing software in information after-treatment system is opened, the sized data of presentation and the actual size of exemplar are identical, finally in three-dimensional drawing software, the specific size for obtaining exemplar is sketched the contours using lines and is exported into three-dimensional drawing file, wherein, to ensure reverse precision, specific frock is coordinated come gathered data using the locked camera of focal length, using scaling board come correction data, using the software program of special algorithm come processing data.The present invention reverse method, quickly can inversely obtain the 2D plane informations of exemplar, inversely there is preferable effect especially for circuit board, can effective lower cost, realize degree of precision.
Description
Technical field
It is specifically a kind of with simple to operate, inexpensive, the high feature of precision the present invention relates to a kind of fast reverse method
Fast parameter reverse method, belong to reverse Engineering Technology field.
Background technology
In trial production, designer particularly create it is objective, extremely it is customized make product during, be often based upon cost and trial-production
Condition considers, is all to try to by increasing existing exemplar, delete, change, realize corresponding function, but during increasing, delete, change often
Also without the specific drawing of the exemplar, the instruments such as slide calliper rule can only be borrowed and carry out dimensional measurement, can not be used once running into complicated exemplar
Kind of calliper, then can only remake part, and cost is higher.
And when being scanned using 3D scanners to exemplar size, in the scanning to electronic component, particularly circuit board
Larger problem be present, (probe diameter is about when exemplar circuit board runs into, such as when needing to install the demand of multiprobe additional for multiconductor
0.7mm), with need spray developer 3D scanners circuit board can be caused to use, and because dusting after, because the thickness of powder can be made
Become big into contact, precision is lost serious.And during the laser 3D scanners in face of that need not dust, it may appear that loss in detail situation
(such as certain contact and certain details are not scanned all the time), and precision does not reach requirement, when such as using the laser scanner of higher precision instead,
Then cost is higher, and the problem of loss in detail still occurs.
In patent application CN201210052972.6, a kind of three-dimensional sketch reverse method is disclosed, is to pass through measurement
The sized data of exemplar is obtained with geometrical constraint, this method occurs in reverse real process, Complex Different Shape part indeterminacy
The problem of with exemplar geometrical constraint difficulty, practicality is poor.
In patent application CN201410532630.3, a kind of method of the reverse art work is disclosed, this method is using in vain
Photoscanner obtains related data, and the problem of precision is not high occurs in the reverse data of this method, is not appropriate for industrial practicality.
The content of the invention
In view of the above-mentioned problems, there is simple to operate, inexpensive, the high feature of precision fast parameter the invention provides a kind of
Change reverse method.
For achieving the above object, the present invention uses following technical proposals：
A kind of fast parameter reverse method, the main information acquisition system formed using camera and frock, gathers exemplar
Sized data and the pictorial information for exporting collection, pictorial information is after the software processing in information preprocessing system, in information
When three-dimensional drawing software in after-treatment system is opened, the sized data of presentation and the actual size of exemplar be it is identical, finally
In three-dimensional drawing software, the specific size for obtaining exemplar is sketched the contours using lines and is exported into three-dimensional drawing file, wherein, to protect
Reverse precision is demonstrate,proved, specific frock is coordinated come gathered data using the locked camera of focal length, using scaling board come correction data, is used
The software program of special algorithm carrys out processing data.
Further scheme is：
Described information acquisition system camera+tight shot, and locked lens focus, coordinate frock clamp collection exemplar
Dimension information, accuracy of data acquisition is lifted, then single anti-lens distortion and perspective distortion are corrected with scaling board, lifting data are overall
Precision.
Wherein, the frock clamp of use is primarily to guarantee the distance between camera and exemplar and angle, reduce data
The uncontrollability of collection.
Further scheme is：
Described information preprocessing system utilizes the size pictorial information of information acquisition system collection, using according to special algorithm
Software program, and scaling board correction data is combined, pictorial information is changed, makes the pictorial information in three-dimensional drawing software
During opening, the exemplar size and the actual size that are presented in three-dimensional drawing software are coincide.
Further scheme is：
Described information after-treatment system is mainly gone back using three-dimensional drawing software by using lines to pictorial information
Original, obtain the drawing being coincide with the actual size of exemplar.
The reverse method of the present invention, the 2D plane informations of exemplar quickly can be inversely obtained, especially for circuit board
Inversely have preferable effect, can effective lower cost, realize degree of precision.
Brief description of the drawings
Fig. 1 is present invention demarcation schematic diagram；
The schematic diagram of data acquisition when Fig. 2 is reverse circuit board of the invention；
Fig. 3 is to sketch the contours exemplar outline drawing using UG lines.
Embodiment
Technical scheme is further described in detail with specific embodiment below in conjunction with the accompanying drawings：
First, the mentality of designing of the present invention is briefly explained：Mainly exemplar sized data is gathered using camera and export collection
Pictorial information, pictorial information is after the software processing in preprocessing system, when three-dimensional drawing software is opened, the chi of presentation
Very little data and the actual size of exemplar are identical, and finally in three-dimensional software, the specific chi for obtaining exemplar is sketched the contours using lines
It is very little and export into three-dimensional drawing file.
Described information acquisition system camera+tight shot, and utilize the fine setting work(of the locked lens focus of focal length fixator
Can, coordinate the dimension information of frock clamp collection exemplar, in data acquisition, camera aperture uses minimum aperture as far as possible, and uses
Remote control presses the vibrations that shutter reduces camera, to lift accuracy of data acquisition.
Described information acquisition system changes the outfit camera lens every time or scaling board must be all placed on specified location by every three months, uses phase
Machine gathers pictorial information to scaling board, and freshly harvested pictorial information is imported in processing system in software program, to correct
Single anti-lens distortion and perspective distortion, lift data overall precision.
The frock clamp is primarily to ensure the distance between camera and exemplar and angle.
Described information preprocessing system gathers pictorial information with camera, big by testing to obtain before using software program
Amount exemplar actual size and three-dimensional software open the data relationship between the specific size presented after pictorial information, according to specific calculation
Method, and scaling board correction data is combined, pictorial information is changed, the pictorial information is beaten in industrial three-dimensional drawing software
When opening, the specific size of exemplar presented in three-dimensional drawing software is coincide with actual size.
Described information after-treatment system is mainly reduced using industrial three-dimensional software using lines to pictorial information, special
It is not the reduction of profile information, when sketching the contours profile (including details profile) information of exemplar with lines, as far as possible using straight line, circle
Arc sketches the contours profile, tangible when not describing, then is described using B-spline curves, when B-spline curves describe, it is necessary to detect institute
The slope of B-spline curves is sketched the contours, if slope mutation is larger, it is necessary to correct, whole B-spline curves is kept fairing, so as to
To the actual size and drawing of model machine.
With a specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the information acquisition system changes the outfit camera lens every time in system or every three months must all use scaling board 11
To correct, and the fine setting focal length of the locked 1311 locked camera lens of device of camera lens focal length, the related data in each hole of scaling board are being believed
Registration was carried out in breath preprocessing system, and during demarcation, system then coordinates scaling board bottom to 111 three macropore fixation and recognitions
The rotation scaling board of sign 121,122,123,124, is rotated by 90 °, every time rotation by 121 → 122 → 123 → 124 order every time
Shi Douyong cameras 131 gather a data (totally four times) to scaling board 11, finally import data to information preprocessing system.
As shown in Figure 2, it is that the information acquisition system utilizes camera 211 and the locked device 2111 of focal length, coordinates frock clamp
221 pairs of circuit boards 231 carry out data acquisition.Frock clamp 221 mainly has camera assembling stand 2211 and exemplar clamping tooling 2212
Form, 2211 and 2221 are assemblied on bottom plate, can so ensure angle and distance between exemplar and camera.Gathering
Before, the level of camera 211 is finely tuned with level meter 2112, and the gathered data of camera 211 is controlled with remote control panel in gatherer process,
To reduce vibrations.The collection preferably can be acquired to the irregular contour of circuit board 231, particularly to irregular contact
2311 (diameter about 0.7mm) and pilot hole 2312 can preferably gather size and positional information is carried out.
As shown in Figure 3, opened in UG softwares after the picture of information preprocessing system processing, start with UG sketches
Function reduces to exemplar dimension information, has used B-spline 311 to describe exemplar profile in reduction process, completes to retouch
After stating, 311 slope being checked, is adjusted, the slope comb 312 for representing 311 slopes is presented fairing states, then and 311
Also fairing, profile description has also been carried out to the contact at 321, has been finally completed the specific size description of exemplar, and the information is defeated
Go out into 2D drawings.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in principle disclosed in the present application
Within scope and spirit.
Claims (4)
- A kind of 1. fast parameter reverse method, it is characterised in that：The main information acquisition system formed using camera and frock, Collection exemplar sized data simultaneously exports the pictorial information of collection, the software processing that pictorial information passes through in information preprocessing system Afterwards, when the three-dimensional drawing software in information after-treatment system is opened, the sized data of presentation and the actual size of exemplar are kisses Close, finally in three-dimensional drawing software, the specific size for obtaining exemplar sketched the contours using lines and is exported into three-dimensional drawing file, Wherein, it is to ensure reverse precision, coordinates specific frock to be corrected using scaling board come gathered data using the locked camera of focal length Data, using the software program of special algorithm come processing data.
- 2. fast parameter reverse method according to claim 1, it is characterised in that：Described information acquisition system camera+tight shot, and locked lens focus, coordinate the size of frock clamp collection exemplar Information, accuracy of data acquisition is lifted, then single anti-lens distortion and perspective distortion are corrected with scaling board, the overall essence of lifting data Degree.
- 3. fast parameter reverse method according to claim 1, it is characterised in that：Described information preprocessing system utilizes the size pictorial information of information acquisition system collection, utilizes the software according to special algorithm Program, and scaling board correction data is combined, pictorial information is changed, the pictorial information is opened in three-dimensional drawing software When, the exemplar size and the actual size that are presented in three-dimensional drawing software are coincide.
- 4. fast parameter reverse method according to claim 1, it is characterised in that：Described information after-treatment system is mainly reduced using three-dimensional drawing software by using lines to pictorial information, is obtained To the drawing being coincide with the actual size of exemplar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710874581.5A CN107730557A (en) | 2017-09-25 | 2017-09-25 | A kind of fast parameter reverse method |
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| CN201710874581.5A CN107730557A (en) | 2017-09-25 | 2017-09-25 | A kind of fast parameter reverse method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140104398A1 (en) * | 2012-07-25 | 2014-04-17 | Jack Marshall Zoken | System and Method for Analysis of Surface Features |
| CN104598675A (en) * | 2015-01-07 | 2015-05-06 | 北京卫星环境工程研究所 | Actually measured data-based spacecraft component assembly simulation method |
| CN105867308A (en) * | 2015-01-24 | 2016-08-17 | 李哲浩 | Sheet metal part rapid development system based on precision control |
-
2017
- 2017-09-25 CN CN201710874581.5A patent/CN107730557A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140104398A1 (en) * | 2012-07-25 | 2014-04-17 | Jack Marshall Zoken | System and Method for Analysis of Surface Features |
| CN104598675A (en) * | 2015-01-07 | 2015-05-06 | 北京卫星环境工程研究所 | Actually measured data-based spacecraft component assembly simulation method |
| CN105867308A (en) * | 2015-01-24 | 2016-08-17 | 李哲浩 | Sheet metal part rapid development system based on precision control |
Non-Patent Citations (4)
| Title |
|---|
| 万刚等编著: "《无人机测绘技术及应用》", 31 December 2015, 北京：测绘出版社 * |
| 冯其强等编著: "《数字工业摄影测量技术及应用》", 31 May 2013, 北京：测绘出版社 * |
| 周小东等: ""基于参数化逆向建模的仿真优化设计"", 《组合机床与自动化加工技术》 * |
| 周小东等: ""基于逆向工程的参数化优化设计"", 《组合机床与自动化加工技术》 * |
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