CN109596105A - A kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction - Google Patents
A kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction Download PDFInfo
- Publication number
- CN109596105A CN109596105A CN201811635645.7A CN201811635645A CN109596105A CN 109596105 A CN109596105 A CN 109596105A CN 201811635645 A CN201811635645 A CN 201811635645A CN 109596105 A CN109596105 A CN 109596105A
- Authority
- CN
- China
- Prior art keywords
- scene
- image
- determines
- angle
- dimensional reconstruction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Graphics (AREA)
- Geometry (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction, using following steps, step 1: choosing the scene for needing to carry out Image Acquisition；Step 2: being provided with image collecting device, airborne laser range finder and angle-measuring equipment in the scene, image collecting device is horizontally fixed in scene, and the airborne laser range finder and angle-measuring equipment are arranged in front of described image acquisition device.The present invention can provide the photo postural position parameter and Image Control Point parameter of stationary body in more mesh three-dimensional reconstructions, and due to during this ranging directly obtained by airborne laser range finder, can reduce the trueness error due to caused by manual operation.
Description
Technical field
The present invention relates to field of image processings, and in particular to a kind of portable determines the mark of photographic scale after three-dimensional reconstruction
Determine method.
Background technique
Domestic and international application is numerous in variety in Image Feature Matching and three-dimensional reconstruction software at present, from the fortune of theory into action
It with having reached its maturity, but is mostly directly to take the picture taken by camera to carry out based on the Three-dimensional Gravity under camera coordinates system
It builds, such as the softwares such as Smart 3D Capture, Agisoft Photoscan, Visual SFM；Nowadays people are for three-dimensional
Rebuild from before only need to reconstruct geometrical relationship, and then wish to directly obtain the true of project by three-dimensional reconstruction now
Real size, the desired reconstruction model of software is more accurate or acquisition true model parameter also needs such as position other than needing photo
It sets and these elements of exterior orientation of angle.Wherein the method for more mesh three-dimensional reconstructions of the auxiliary camera under true coordinate system mainly have with
Lower five kinds:
1, sensor is installed.High-precision sensor is installed in camera site, in order to which photo position can be obtained when shooting
Attitude parameter, control point parameter are set, there can be higher reconstruction accuracy, but be modeled carrying out extensive, high-precision
When, high-precision, highdensity sensor arrangement cost needs are just relatively high, reduce this method economy, Er Qiean
The process of dress sensor can also reduce shooting speed and continuity.
The photo that each component for needing to rebuild at least needs two and two or more different angles to shoot, so obtaining every time
The picture location attitude parameter of camera, control point parameter are just aobvious particularly important, when the number of photos of not excessive needs is more
Also the parameter obtained required for being just encountered by also just increases therewith, in order to accurately and efficiently rebuild and obtain reconstructed results ginseng
Number, then improve obtain photo parameter efficiency it is also just imperative, this is also efficient carries out before extensive, high-precision models
It mentions, but high-precision, highdensity sensor arrangement cost needs are with regard to relatively high, it is difficult to be generally applicable to production and living and work as
In.
2, reference point is set in reconstruction component.For needing to carry out the component of three-dimensional reconstruction, first exist before shooting photo
Reference point is selected on component and in two reference points and is placing laser emitter and laser pickoff in reference point locations respectively,
And point-to-point transmission does not have barrier, and the distance between two o'clock is then measured by laser transmitting-receiving, operates more many and diverse, it is also necessary to
Range unit is installed in tested project, reduces shooting efficiency.
And when installing laser transmitting-receiving device, it can be inevitably generated the error of manual operation generation, cause to be pacified
There is an error in the position of holding position and true reference point.
3, reference substance (target) assisted reconstruction known to a size.To the component for needing to carry out three-dimensional reconstruction, together with
Reference substance is shot together, is carried out the three-dimensional reconstruction under camera coordinates system, the full-size(d) of reference substance is substituted into, by similar several
What relationship carries out the three-dimensional reconstruction under true coordinate system.
There are malfunctions for this method, for large scale project, if reference substance is too small, will lead to reconstructed results precision
On will appear problem, so will appear the size of required reference substance also due to rebuild project feelings of different sizes and different
Condition, and when carrying out three-dimensional reconstruction reference substance can also have to partial reconstitution component it is certain block, need to increase shooting number,
Otherwise reconstructed results be will lead to it is possible that undesirable situation.
4, the displacement of camera lens between measurement is shot twice when being shot.Due in present three-dimensional reconstruction
In algorithm, the position of each camera lens can be reconstructed in the model after reconstruction, so really shooting twice by measuring
Between displacement the threedimensional model under true coordinate system can be rebuild by similar geometry principle.
But such method implements more difficult, can exist quite since the displacement measurement between two lens gets up
Difficulty, and measure generate trueness error be also to be difficult to avoid that.
5, based on the three-dimensional reconstruction of phase measurement.High-precision digital phase-shifting technique raster image is generated using computer programming,
And the raster image with phase shift is projected to by object under test surface by DLP projector, CCD camera also will be obtained successively and be passed through
Object under test surface is crossed, CCD camera is also by the successive Morie fringe image obtained Jing Guo surface modulation to be measured, using image
The image signal process captured is sent into the phase that computer calculates each pixel of Morie fringe image by capture card, finally
The three dimensional point cloud that testee surface is calculated according to the mapping relations of phase and height, three obtained point cloud datas,
Then the three-dimensional appearance of object can be obtained by three-dimensional reconstruction.
This method is in the presence of complicated operation, and instrument cost is also higher, and the object bigger to volume carries out three-dimensional
Reconstruction operation is got up also just more complicated, and the time used in three-dimensional reconstruction also can be longer.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes the calibration that a kind of portable determines photographic scale after three-dimensional reconstruction
Method, specific technical solution are as follows:
A kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction, it is characterised in that:
Using following steps,
Step 1: choosing the scene for needing to carry out Image Acquisition；
Step 2: being provided with image collecting device (1), airborne laser range finder (5) and angle-measuring equipment (6) in the scene, image is adopted
Acquisition means (1) are horizontally fixed in scene, and the airborne laser range finder (5) and angle-measuring equipment (6) setting are acquired in described image and filled
It sets in front of (1)；
Step 3: the airborne laser range finder (5) determines in scene the first anchor point to scheming by issuing first laser beam (1) α
As the distance of acquisition device (1) is a, determine in scene the second anchor point to image collector by issuing second laser beam (2)
The distance for setting (1) is b；
Step 4: angle-measuring equipment (6) measures the angle α between first laser beam (1) and second laser beam (2)；
Step 5: assuming that the actual range between the first anchor point and the second anchor point is c, passing through formulaDetermine the length of distance C；
Step 6: image collecting device (1) acquires scene image, and image processing apparatus determines that the first anchor point and second is determined
Model length b of the site in scene image；
Step 7: computer processor unit obtains the calibration ratio between physical length c and model length b；
Step 8: image collecting device (1) acquires at least 2 scene images, and scene image is used for three by pattern algorithm
Dimension is rebuild, and threedimensional model is obtained；
Step 9: sizing calibration is carried out to threedimensional model according to calibration ratio.
Further: described image acquisition device (1) is camera.
The invention has the benefit that first, the present invention can provide the photo of stationary body in more mesh three-dimensional reconstructions
Postural position parameter and Image Control Point parameter, and due to during this ranging directly obtained by airborne laser range finder (5), can
To reduce the trueness error due to caused by manual operation；
Second, the instrumentation is simple and easy to operate, can be generally applicable to the camera of all models, can according to
Family demand is customized to the angle measurement mode of different accuracy, and use cost is adjusted flexibly；
Third, laser have high brightness, high directivity, high monochromaticity and high coherence, this also determines the present invention highlighted
Still smoothly mark point can be projected under degree environment and rebuild in project with assist three-dimensional；
4th, there are the problems such as cumbersome, calculating is complicated for three-dimensional rebuilding measuring technology before, and by camera
Additional instrument can directly obtain the scale parameter of reconstruction model after three-dimensional reconstruction, make simplified mathematical model, convenient for operation
It is achieved.
Detailed description of the invention
Fig. 1 is first structure diagram of the invention；
Fig. 2 is the second structural schematic diagram of the invention.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
A kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction as shown in Figure 1:,
Using following steps,
Step 1: choosing the scene for needing to carry out Image Acquisition；
Step 2: being provided with image collecting device 1, airborne laser range finder 5 and angle-measuring equipment 6, image collecting device in the scene
1 is horizontally fixed in scene, and image collecting device 1 is camera.
Airborne laser range finder 5 and the setting of angle-measuring equipment 6 are in 1 front of image collecting device；
Step 3: airborne laser range finder 5 determines in scene the first anchor point to image collector by issuing 1 α of first laser beam
The distance for setting 1 is a, determines that the distance of the second anchor point to image collecting device 1 in scene is b by issuing second laser beam 2；
Step 4: angle-measuring equipment 6 measures the angle α between first laser beam 1 and second laser beam 2；
Step 5: assuming that the actual range between the first anchor point and the second anchor point is c, passing through formulaDetermine the length of distance C；
Step 6: image collecting device 1 acquires scene image, and image processing apparatus determines the first anchor point and the second positioning
Model length b of the point in scene image；
Step 7: computer processor unit obtains the calibration ratio between physical length c and model length b；
Step 8: image collecting device 1 acquires at least 2 scene images, and scene image is used for three-dimensional by pattern algorithm
It rebuilds, obtains threedimensional model；
Step 9: sizing calibration is carried out to threedimensional model according to calibration ratio.
Claims (2)
1. the scaling method that a kind of portable determines photographic scale after three-dimensional reconstruction, it is characterised in that:
Using following steps,
Step 1: choosing the scene for needing to carry out Image Acquisition；
Step 2: being provided with image collecting device (1), airborne laser range finder (5) and angle-measuring equipment (6), image collector in the scene
It sets (1) to be horizontally fixed in scene, the airborne laser range finder (5) and angle-measuring equipment (6) are arranged in described image acquisition device (1)
Front；
Step 3: the airborne laser range finder (5) determines that the first anchor point is adopted to image in scene by issuing first laser beam (1)
The distance of acquisition means (1) is a, determines in scene the second anchor point to image collecting device (1) by issuing second laser beam (2)
Distance be b；
Step 4: angle-measuring equipment (6) measures the angle α between first laser beam (1) and second laser beam (2)；
Step 5: assuming that the actual range between the first anchor point and the second anchor point is c, passing through formula
Determine the length of distance BC；
Step 6: image collecting device (1) acquires scene image, determines the first positioning by existing more mesh three-dimensional reconstruction algorithms
Point and model length b of second anchor point in scene image；
Step 7: computer processor unit obtains the calibration ratio between physical length c and model length b；
Step 8: image collecting device (1) acquires at least 2 scene images, and scene image is used for Three-dimensional Gravity by pattern algorithm
It builds, obtains threedimensional model；
Step 9: sizing calibration is carried out to threedimensional model according to calibration ratio.
2. a kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction according to claim 1, feature exists
In: described image acquisition device (1) is camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635645.7A CN109596105A (en) | 2018-12-29 | 2018-12-29 | A kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635645.7A CN109596105A (en) | 2018-12-29 | 2018-12-29 | A kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109596105A true CN109596105A (en) | 2019-04-09 |
Family
ID=65964843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811635645.7A Pending CN109596105A (en) | 2018-12-29 | 2018-12-29 | A kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109596105A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990675A (en) * | 2019-04-18 | 2019-07-09 | 内蒙古工业大学 | Ancient architecture measuring scale |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4928175A (en) * | 1986-04-11 | 1990-05-22 | Henrik Haggren | Method for the three-dimensional surveillance of the object space |
| CN104835141A (en) * | 2015-03-09 | 2015-08-12 | 深圳市亿思达科技集团有限公司 | Mobile terminal and method for building three-dimensional model through laser range finding |
| CN105513049A (en) * | 2015-11-25 | 2016-04-20 | 中国联合网络通信集团有限公司 | Image forming method and image forming system |
| CN105953741A (en) * | 2016-07-13 | 2016-09-21 | 中冶建筑研究总院有限公司 | Steel structure local geometric deformation measurement system and method |
| CN106123780A (en) * | 2016-06-14 | 2016-11-16 | 北京交通大学 | Contactless space curve precision measurement method and device |
| CN107764187A (en) * | 2017-08-30 | 2018-03-06 | 深圳市赛亿科技开发有限公司 | A kind of system and device for linear measure longimetry |
-
2018
- 2018-12-29 CN CN201811635645.7A patent/CN109596105A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4928175A (en) * | 1986-04-11 | 1990-05-22 | Henrik Haggren | Method for the three-dimensional surveillance of the object space |
| CN104835141A (en) * | 2015-03-09 | 2015-08-12 | 深圳市亿思达科技集团有限公司 | Mobile terminal and method for building three-dimensional model through laser range finding |
| CN105513049A (en) * | 2015-11-25 | 2016-04-20 | 中国联合网络通信集团有限公司 | Image forming method and image forming system |
| CN106123780A (en) * | 2016-06-14 | 2016-11-16 | 北京交通大学 | Contactless space curve precision measurement method and device |
| CN105953741A (en) * | 2016-07-13 | 2016-09-21 | 中冶建筑研究总院有限公司 | Steel structure local geometric deformation measurement system and method |
| CN107764187A (en) * | 2017-08-30 | 2018-03-06 | 深圳市赛亿科技开发有限公司 | A kind of system and device for linear measure longimetry |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990675A (en) * | 2019-04-18 | 2019-07-09 | 内蒙古工业大学 | Ancient architecture measuring scale |
| CN109990675B (en) * | 2019-04-18 | 2021-06-29 | 内蒙古工业大学 | Ancient building measuring scale |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106959078B (en) | A kind of contour measuring method for measuring three-dimensional profile | |
| CN103559735B (en) | A kind of three-dimensional rebuilding method and system | |
| US9322643B2 (en) | Apparatus and method for 3D surface measurement | |
| CN103292695B (en) | A kind of single eye stereo vision measuring method | |
| CN109708618A (en) | A kind of combined type determines the scaling method of photographic scale after three-dimensional reconstruction | |
| CN108759669B (en) | Indoor self-positioning three-dimensional scanning method and system | |
| CN110514143A (en) | A kind of fringe projection system scaling method based on reflecting mirror | |
| CN107131848A (en) | The optical triangle method device of quick and fine and close SHAPE DETECTION can be realized | |
| CN105115560B (en) | A kind of non-contact measurement method of cabin volume of compartment | |
| JP2013539147A5 (en) | ||
| CN103196370A (en) | Measuring method and measuring device of conduit connector space pose parameters | |
| CN109307483A (en) | A kind of phase developing method based on structured-light system geometrical constraint | |
| Guidi et al. | 3D Modelling from real data | |
| JP2011242183A (en) | Image processing device, image processing method, and program | |
| CN112492292B (en) | Intelligent visual 3D information acquisition equipment of free gesture | |
| CN109855559A (en) | A kind of total space calibration system and method | |
| CN201041488Y (en) | Rock surface three-dimensional appearance measuring instrument | |
| Bergström et al. | Automatic in-line inspection of shape based on photogrammetry | |
| CN109596105A (en) | A kind of portable determines the scaling method of photographic scale after three-dimensional reconstruction | |
| CN112253913B (en) | Intelligent visual 3D information acquisition equipment deviating from rotation center | |
| CN109506562A (en) | A kind of Binocular vision photogrammetry device for the detection of solar wing spreading lock depth | |
| JP2022027111A (en) | Measurement processing device, method and program | |
| Zheng et al. | A method of 3D measurement and reconstruction for cultural relics in museums | |
| Zhang et al. | Freight train gauge-exceeding detection based on three-dimensional stereo vision measurement | |
| KR101292074B1 (en) | Measurement system using a camera and camera calibration method using thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190409 |
|
| RJ01 | Rejection of invention patent application after publication |