CN101298985A - Photography measurement object space control rod and its use method - Google Patents
Photography measurement object space control rod and its use method Download PDFInfo
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- CN101298985A CN101298985A CNA2008101329186A CN200810132918A CN101298985A CN 101298985 A CN101298985 A CN 101298985A CN A2008101329186 A CNA2008101329186 A CN A2008101329186A CN 200810132918 A CN200810132918 A CN 200810132918A CN 101298985 A CN101298985 A CN 101298985A
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- control rod
- mobile jib
- object space
- coordinate
- rod
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Abstract
The invention discloses a photograph measurement object control rod and a using method, wherein the object control rod is composed of three metal rods with the scale of centimeter, including a main rod and two branch rods. The main rod is vertical to the two planes comprising two branch rods, used for determining the space coordinate of the control point on the rods, when in the estimate survey of signal photo, the main rod of the object control rod is vertical to the measured object. The compass is used to orientate, to make the magnetic bearing be 90 degree formed by the branch rod and the main rod on the plane direction. When in the photograph, the photo is guided to the estimate survey software of the close shot photograph uniwafer, the photo coordinates of the six control points are selected on the photos, wherein the object coordinates of the six control points are read from the scales of the object control rod. The photo coordinate and the object coordinate are linked by the collinearity equation, and the object coordinate of the any point can be figured out through the DLT linear transform.
Description
One, technical field
The present invention relates to a kind of photogrammetric supplementary instrument and using method thereof, particularly a kind of photography measurement object space control rod and using method thereof.
Two, technical background
Up to the present, when the application close-shot photography measure technique carries out assize work, generally all utilize assize of scalability camera and non-scalability camera to take technology such as many sheet photos assize,, can obtain the higher assize efficient and the measuring value of multi-section position more by these technology.When adopting single-phase assize, need be by the aid of three-dimensional controlling filed and mark post.
But above the whole bag of tricks all exists its shortcoming:
1. use the assize of scalability camera, its instrument costs an arm and a leg, and is bulky, handicapped.
2. utilize the assize of non-scalability camera, its s internal and external orientation of resolving in the equation is unknowable, though also can need to take many sheet photos and look for same place by walking around this problem after the collinearity equation process DLT conversion, step is more loaded down with trivial details.
When 3. carrying out single-phase measurement by three-dimensional controlling filed, controlling filed is bulky, carries inconvenience, is not suitable for the field and especially carries out assize work in the mountain area.
Therefore, traditional close-range photogrammetry mode inevitably exists a lot of troubles in assize work.
Three, summary of the invention
Obtain the problem of comparison difficulty in order to overcome s internal and external orientation in the digital photogrammetry of single-sheet photo close shot, the purpose of this invention is to provide a kind of photography measurement object space control rod and using method thereof.
The object of the present invention is achieved like this:
1. the object space control rod that has scale with the space three-dimensional Design Pattern, auxiliary single-phase photogrammetric object space reference mark volume coordinate of obtaining.The The whole control bar is made up of three aluminium alloy system Metallic rod that have the centimetre-sized scale, comprises a mobile jib and 2 poles, and the mobile jib design length is 2.000 meters, and the pole design length is 1.838 meters.Mobile jib and pole binding site height are 1.300 meters, and the angle that mobile jib and each pole are constituted is 45 °, and two planes that mobile jib and two poles constitute respectively are orthogonal, are used for determining the volume coordinate at reference mark on the bar.
2. the using method of photography measurement object space control rod is as follows: 1. look for a normal wood in zone to be determined, the object space control rod mobile jib is vertically stood on measured normal wood before; 2. adopt box compass to carry out orientation, the magnetic azimuth that makes one of them pole and mobile jib form in-plane is 90 °, takes photograph; 3. photograph is imported in the up short monolithic assize software, on photograph, choose the picture side coordinate (x at 6 reference mark
i, y
i); 4. the corresponding object coordinates (X that reads 6 reference mark from object space control rod
i, Y
i, Z
i); 5. will connect with collinearity equation as square coordinate and object coordinates, the object coordinates that process DLT linear transformation calculates the arbitrfary point is a coordinate.
This invention has the following advantages:
1. the object space control rod design has the centimetre-sized scale, conveniently reads the scale value at object space reference mark;
2. mobile jib and each pole angle design at 45, the coordinate figure that resolves the object space reference mark is convenient and swift;
3. two planes that constitute respectively of mobile jib and two poles are orthogonal, and The whole control body of rod system constitutes space coordinates, conveniently obtains the volume coordinate at object space reference mark;
4. the picture side at reference mark coordinate and object coordinates all can obtain by measuring directly, need not resolve conversion, are suitable for carrying out the photogrammetric of single-sheet photo, have improved photogrammetric precision and efficient.
Four, description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the photography measurement object space control rod front elevation;
Fig. 2 is the photography measurement object space control rod side view;
Fig. 3 is a photography measurement object space control rod two-dimensional design drawing.
Five, embodiment:
1) photography measurement object space control rod: have the object space control rod of scale with the space three-dimensional Design Pattern, auxiliary single-phase photogrammetric object space reference mark volume coordinate of obtaining.As shown in Figure 1, 2, the The whole control bar is made up of three aluminium alloy system Metallic rod that have the centimetre-sized scale, comprises a mobile jib and 2 poles.The mobile jib design length is 2.000 meters as shown in Figure 3, and the pole design length is 1.838 meters.Mobile jib and pole binding site height are 1.300 meters, and the angle that mobile jib and each pole are constituted is 45 °, and two planes that mobile jib and two poles constitute respectively are orthogonal, are used for determining the volume coordinate at reference mark on the bar.
2) using method of photography measurement object space control rod: 1. look for a normal wood in zone to be determined, the object space control rod mobile jib is vertically stood on measured normal wood before; 2. adopt box compass to carry out orientation, the magnetic azimuth that makes one of them pole and mobile jib form in-plane is 90 °, takes photograph; 3. photograph is imported in the up short monolithic assize software, on photograph, choose the picture side coordinate (x at 6 reference mark
i, y
i); 4. the corresponding object coordinates (X that reads 6 reference mark from object space control rod
i, Y
i, Z
i); 5. will connect with collinearity equation as square coordinate and object coordinates, the object coordinates that process DLT linear transformation calculates the arbitrfary point is a coordinate.
Claims (2)
1. photography measurement object space control rod is characterized in that: have the object space control rod of scale, auxiliary single-phase photogrammetric object space reference mark volume coordinate of obtaining with the space three-dimensional Design Pattern.Control lever is made up of three aluminium alloy system Metallic rod that have the centimetre-sized scale, comprises a mobile jib and 2 poles, and the mobile jib design length is 2.000 meters, and the pole design length is 1.838 meters.Mobile jib and pole binding site height are 1.300 meters, and the angle that mobile jib and each pole are constituted is 45 °, and two planes that mobile jib and two poles constitute respectively are orthogonal, are used for determining the volume coordinate at reference mark on the bar.
2. realize the described photogrammetric survey method of claim 1 for one kind, it is characterized in that based on object space control rod: 1. look for a normal wood in zone to be determined, the object space control rod mobile jib is vertically stood on measured normal wood before; 2. adopt box compass to carry out orientation, the magnetic azimuth that makes one of them pole and mobile jib form in-plane is 90 °, takes photograph; 3. photograph is imported in the up short monolithic assize software, on photograph, choose the picture side coordinate (x at 6 reference mark
i, y
i); 4. the corresponding object coordinates (X that reads 6 reference mark from object space control rod
i, Y
i, Z
i); 5. will connect with collinearity equation as square coordinate and object coordinates, the object coordinates that process DLT linear transformation calculates the arbitrfary point is a coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101329186A CN101298985A (en) | 2008-07-01 | 2008-07-01 | Photography measurement object space control rod and its use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101329186A CN101298985A (en) | 2008-07-01 | 2008-07-01 | Photography measurement object space control rod and its use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101298985A true CN101298985A (en) | 2008-11-05 |
Family
ID=40078882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101329186A Pending CN101298985A (en) | 2008-07-01 | 2008-07-01 | Photography measurement object space control rod and its use method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162635A (en) * | 2013-02-21 | 2013-06-19 | 北京林业大学 | Method for measuring diameter at breast height and tree height with camera |
| CN103267516A (en) * | 2013-02-27 | 2013-08-28 | 北京林业大学 | Sample plot measuring technology by using digital camera as tool |
| CN106248052A (en) * | 2016-06-27 | 2016-12-21 | 北京林业大学 | A kind of telescope cooperative intelligent mobile phone and electronic distance meter long-distance photograph measuring method |
| CN110411418A (en) * | 2018-04-27 | 2019-11-05 | 北京林业大学 | A kind of multi-disc sequence photography measuring system association calculation method |
-
2008
- 2008-07-01 CN CNA2008101329186A patent/CN101298985A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162635A (en) * | 2013-02-21 | 2013-06-19 | 北京林业大学 | Method for measuring diameter at breast height and tree height with camera |
| CN103267516A (en) * | 2013-02-27 | 2013-08-28 | 北京林业大学 | Sample plot measuring technology by using digital camera as tool |
| CN106248052A (en) * | 2016-06-27 | 2016-12-21 | 北京林业大学 | A kind of telescope cooperative intelligent mobile phone and electronic distance meter long-distance photograph measuring method |
| CN110411418A (en) * | 2018-04-27 | 2019-11-05 | 北京林业大学 | A kind of multi-disc sequence photography measuring system association calculation method |
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Open date: 20081105 |