CN110411418A - A kind of multi-disc sequence photography measuring system association calculation method - Google Patents
A kind of multi-disc sequence photography measuring system association calculation method Download PDFInfo
- Publication number
- CN110411418A CN110411418A CN201810394167.9A CN201810394167A CN110411418A CN 110411418 A CN110411418 A CN 110411418A CN 201810394167 A CN201810394167 A CN 201810394167A CN 110411418 A CN110411418 A CN 110411418A
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- CN
- China
- Prior art keywords
- point
- measuring system
- coordinate
- object space
- sequence photography
- 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.)
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Classifications
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- 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
- G01C11/04—Interpretation of pictures
Abstract
It is low in cost the invention discloses the method that a kind of association of multi-disc sequence photography measuring system resolves, control point is marked and drawed using ground reflective plastic plate, carries out any shooting with ordinary digital camera；It takes continuous adjacent to be overlapped photograph, using corresponding image points and known six or more control point, a series of Combined Calculations is carried out according to least square method and mathematic(al) manipulation, finally obtain the object space coordinate and internal and external orientation of accurately ground point to be asked.
Description
One, technical field
The invention belongs to the methods that photogrammetric association resolves building ground point cloud.
Two, technical background
Conventional photogrammetric equipment belongs to high-precision profession and measures camera, and this camera is expensive, general raw
Production department powerlessly buys.And non-metric camera more common in life has great flexibility such as mobile phone, digital camera,
Photography can be held, and is photographed with any angle, it is cheap, therefore be easier to purchase in general division unit and put into life
It produces, research.Therefore, the method that photogrammetric association high, low to hardware requirement that there is an urgent need to operability at present resolves.
Three, summary of the invention
In order to overcome conventional photogrammetric cost high to hardware requirement and high, the object of the invention is to mention
Calculation method is associated with for a kind of multi-disc sequence photography measuring system.
The object of the present invention is achieved like this:
First for being continuously shot three sheet photos, adjacent degree of overlapping accounts for percent 60 or more, In between every sheet photo
Three sheet photo overlapping regions are placed with the mark reflective plastic plate made, and are considered as control point, three-dimensional coordinate it is known that similarly,
Six or more control points are needed altogether.Secondly with the corresponding image points coordinate after control point coordinates, and matching for given data, joint is straight
It connects solution and obtains the ground point three-dimensional coordinate of any picpointed coordinate.
Advantages of the present invention:
1. not having to calibration, therefore the elements of interior orientation of camera, camera distortion parameter are required no knowledge about, greatly reduces hardware
Requirement；
2. not having to POS data, this method is solved using control point；
3. freely photograph, i.e., any photography of less demanding to camera angle；
4. not needing initial value；
Four, Detailed description of the invention
Fig. 1 is that three pieces are overlapped graph, and S is photo centre.Fig. 2 is reflecting sign plastic plate master drawing.
Five, specific embodiment:
Using multi-disc sequence photography association calculation method and traditional calculation method, in terms of algorithm and technical method side
There is biggish improvement in face, shows down:
1) core equations collinearity equation is converted, requires no knowledge about the initial of elements of interior orientation and elements of exterior orientation
1. value converts to obtain mathematical model by a series of property by collinearity equation lineConstruct picpointed coordinate
With the direct solution relationship of object space coordinate.It further obtains calculating mathematical model 2. by mathematic(al) manipulationIt is calculated according to this formula.
2) implement to use reflective plastic plate in the selection of surface mark point first, depict obvious reflecting sign point on plate,
Three control points on every plate are in cross distribution, its object space coordinate can be obtained with measuring tool.Continuous adjacent picture
Piece needs six or more control points, 2. therefore obtains 12 equations simultaneousnesses by model and settles accounts to obtain L coefficient
Approximation.Next acquires the approximation of object space point, 3. the calculating formula of mathematical model isThis method simultaneous three opens continuous photograph.Then it is sat with picture point
It is designated as observation, the exact value of L coefficient is obtained according to transformation.Finally ask object space empty according to given data and same principle joint solution
Between coordinate.
Claims (2)
1. a kind of multi-disc sequence photography measuring system is associated with calculation method, it is characterized in that: 1. not having to calibration, therefore require no knowledge about
The elements of interior orientation of camera, camera distortion parameter, greatly reduce the requirement of hardware；2. not having to POS data, this method utilizes control
System point and same place combine direct solution；3. freely photographing, camera angle is any；4. not needing any initial value data, we
Method can solve.
2. a kind of multi-disc sequence photography measuring system according to claim 1 is associated with settlement method, it is characterised in that: 1. right
Core equations collinearity equation converts, and the initial value of elements of interior orientation and elements of exterior orientation is required no knowledge about, by conllinear
1. equation line converts to obtain mathematical model by a series of propertyConstruct picpointed coordinate and object
The direct solution relationship of side space coordinate further obtains calculating mathematical model 2. by mathematic(al) manipulationIt is calculated according to this formula；2. implementing the selection first in surface mark point
Using reflective plastic plate, obvious reflecting sign point is depicted on plate, three control points on every plate are in cross distribution, can use survey
Amount tool obtains its object space coordinate, and continuous adjacent photo needs six or more control points, 2. therefore obtains ten by model
Two equations simultaneousnesses are settled accounts to obtain the approximation of L coefficient, next acquires the approximation of object space point, the calculating of mathematical model
3. formula isThis method simultaneous three opens continuous photograph, then with picpointed coordinate
For observation, the exact value of L coefficient is obtained according to transformation, object space is finally asked according to given data and same principle joint solution
Coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810394167.9A CN110411418A (en) | 2018-04-27 | 2018-04-27 | A kind of multi-disc sequence photography measuring system association calculation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810394167.9A CN110411418A (en) | 2018-04-27 | 2018-04-27 | A kind of multi-disc sequence photography measuring system association calculation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110411418A true CN110411418A (en) | 2019-11-05 |
Family
ID=68346797
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810394167.9A Pending CN110411418A (en) | 2018-04-27 | 2018-04-27 | A kind of multi-disc sequence photography measuring system association calculation method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298985A (en) * | 2008-07-01 | 2008-11-05 | 北京农业信息技术研究中心 | Photography measurement object space control rod and its use method |
| CN103424104A (en) * | 2013-09-04 | 2013-12-04 | 中测新图(北京)遥感技术有限责任公司 | Close shot large span digital photogrammetry system and method |
| CN106384368A (en) * | 2016-09-14 | 2017-02-08 | 河南埃尔森智能科技有限公司 | Distortion self-correction method for non-measurement type camera lens and light-sensing chip |
| CN106767895A (en) * | 2015-11-25 | 2017-05-31 | 南京中观软件技术有限公司 | The system and method for solving camera elements of exterior orientation using index point orientation |
| CN107014399A (en) * | 2017-04-25 | 2017-08-04 | 国家测绘地理信息局卫星测绘应用中心 | A kind of spaceborne optical camera laser range finder combined system joint calibration method |
-
2018
- 2018-04-27 CN CN201810394167.9A patent/CN110411418A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298985A (en) * | 2008-07-01 | 2008-11-05 | 北京农业信息技术研究中心 | Photography measurement object space control rod and its use method |
| CN103424104A (en) * | 2013-09-04 | 2013-12-04 | 中测新图(北京)遥感技术有限责任公司 | Close shot large span digital photogrammetry system and method |
| CN106767895A (en) * | 2015-11-25 | 2017-05-31 | 南京中观软件技术有限公司 | The system and method for solving camera elements of exterior orientation using index point orientation |
| CN106384368A (en) * | 2016-09-14 | 2017-02-08 | 河南埃尔森智能科技有限公司 | Distortion self-correction method for non-measurement type camera lens and light-sensing chip |
| CN107014399A (en) * | 2017-04-25 | 2017-08-04 | 国家测绘地理信息局卫星测绘应用中心 | A kind of spaceborne optical camera laser range finder combined system joint calibration method |
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Application publication date: 20191105 |