CN104634324B - A kind of arbitrarily photograph single-phase coordinates the technical method of the emergent regional space state of DTM positioning - Google Patents
A kind of arbitrarily photograph single-phase coordinates the technical method of the emergent regional space state of DTM positioning Download PDFInfo
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- CN104634324B CN104634324B CN201510064806.1A CN201510064806A CN104634324B CN 104634324 B CN104634324 B CN 104634324B CN 201510064806 A CN201510064806 A CN 201510064806A CN 104634324 B CN104634324 B CN 104634324B
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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
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Abstract
First, arbitrarily photograph single-phase and coordinate the emergent regional space state of DTM positioning to be divided into aeroplane photography and ground photography both of which, obtain the formula and each emergent provincial characteristics point height of aeroplane photography and ground photography both of which respectively by calculating.Then, in case of emergency, as long as finding multiple boundary points in emergent region on photograph, and obtain these elevations in characteristic point grid using DTM, emergent region can be just formed, and obtains the data such as the scope, landform and area in the region, decision support is provided for emergency response.
Description
First, technical field
This method belongs to the photogrammetric middle skill for coordinating DTM to position emergent regional space state using any single-phase of photography
Art method.
2nd, technical background
When occurring the accidents such as forest fires, earthquake, fire and environmental disaster, if it is possible to which real-time ground monitoring is simultaneously
Handled rapidly, can farthest retrieve the loss of property and resource.Traditional the condition of a disaster detecting system can be because burst thing
The influence of part, will not timely feed back to the accurate information of the condition of a disaster, therefore, it is impossible to rapidly carry out emergency processing.It is photogrammetric
With the advantage such as easy to carry, real-time monitored and rapid processing.Therefore, arbitrarily photograph single-phase and coordinate the emergent area of DTM positioning
The technical method of domain space state can provide support facility for the rapid processing in region of meeting an urgent need.
3rd, the content of the invention
(1) arbitrarily photograph single-phase and coordinate the emergent regional space state of DTM positioning to be divided into aeroplane photography and ground photography two
The pattern of kind, is that the emergent sheet photo of region one is arbitrarily shot using digital camera and is quickly corrected, the photography of ground photography pattern
Formula is corrected in measurementThe photogrammetric correction formula of aeroplane photography pattern is
Wherein, λ 2 and λ 1 is zoom factor, and (u, f, v) and (u, v ,-f) is the picpointed coordinate of arbitrfary point,
(Xs, Ys, Zs) is the object space coordinate of known point, and (X, Y, Z) is that need to calculate the object space coordinate of obtained point；
(2) in the photogrammetric correction formula of ground photography pattern, orderAnd, obtain public
Formula：In the photogrammetric correction formula of aeroplane photography pattern, orderAndObtain formula：Equally distributed 5 marks are obvious in selection photo and accurately control
Point, the object space coordinate at this 5 control points and picpointed coordinate is substituted into the photogrammetric correction formula of aeroplane photography pattern, led to
Cross Taylor series expansion, can solution obtain a1, a2, a3, b1, b2, b3, c1, c2, c3 value, this step is iterative process；
(3) set up grid along X-axis and Y direction in units of 2cm on DTM figures, parse 5 control point coordinates (Xi,
Yi, Zi), it corresponds to picpointed coordinate (ui, vi) in photograph to inverse, according to formula under ground photography pattern：According to formula under aeroplane photography pattern：
(4) each emergent provincial characteristics point P coordinates are parsed, if it falls on image among four characteristic points, its distance point
Not Wei d1, d2, d3, d4, then can obtain P point height Zp formula：
(5) according to formula under ground photography patternAccording to formula under aeroplane photography patternUsing determining picpointed coordinate (ui, vi) and required P point height Zp of the boundary point in photo,
P point coordinates is calculated, each characteristic point connection forms emergent region.
4th, illustrate：
The present invention is further described with example below in conjunction with the accompanying drawings.
Fig. 1 coordinates technical method schematic diagram (the 1- features of the emergent regional space state of DTM positioning for any single-phase of photography
Point grid, 2- meets an urgent need zone boundary point, and 3- meets an urgent need region)；
Fig. 2 be characteristic point P distribution maps in grid (P- grid internal boundary points, 1,2,3, four characteristic points, d in 4- grid1,
d2, d3, d4- four characteristic points correspond to the distance of P points respectively)
5th, embodiment：
In case of emergency, as long as finding multiple boundary points in emergent region on photograph, and these points are obtained using DTM
Dispersed elevation within the specific limits, utilizes this technical method, it is possible to obtain the number such as the scope, landform and area in the region
According to providing decision support for emergency response.
Claims (2)
1. a kind of arbitrarily photograph single-phase coordinates the technical method of the emergent regional space state of DTM positioning, comprise the concrete steps that：
(1) arbitrarily photograph single-phase and coordinate the emergent regional space state of DTM positioning to be divided into two kinds of moulds of aeroplane photography and ground photography
Formula, is that the emergent sheet photo of region one is arbitrarily shot using digital camera and is quickly corrected, ground photography pattern it is photogrammetric
Correcting formula isThe photogrammetric correction formula of aeroplane photography pattern is
Wherein, λ 2 and λ 1 is zoom factor, and (u, f, v) and (u, v ,-f) is the picpointed coordinate of arbitrfary point,
(Xs, Ys, Zs) is the object space coordinate of known point, and (X, Y, Z) is that need to calculate the object space coordinate of obtained point；
(2) in the photogrammetric correction formula of ground photography pattern, orderAnd, obtain formula：In the photogrammetric correction formula of aeroplane photography pattern, orderAndObtain formula：Equally distributed 5 marks are obvious in selection photo and accurately control
It is processed, the object space coordinate at this 5 control points and picpointed coordinate are substituted into the photogrammetric correction formula of aeroplane photography pattern,
By Taylor series expansion, can solution obtain a1, a2, a3, b1, b2, b3, c1, c2, c3 value, this step is iterative process；
(3) set up grid along X-axis and Y direction in units of 2cm on DTM figures, parse 5 control point coordinates (Xi, Yi,
Zi), picpointed coordinate (ui, vi) in its correspondence photograph of inverse, according to formula under ground photography pattern：According to formula under aeroplane photography pattern：
(4) each emergent provincial characteristics point P coordinates are parsed, if it falls on image among four characteristic points, its distance is respectively
D1, d2, d3, d4, then can obtain P point height Zp formula：
(5) according to formula under ground photography patternAccording to formula under aeroplane photography patternUsing determining picpointed coordinate (ui, vi) and required P point height Zp of the boundary point in photo,
P point coordinates is calculated, each characteristic point connection forms emergent region.
2. a kind of any single-phase according to claim 1 technical method for coordinating the emergent regional space state of DTM positioning,
Its feature in case of emergency, as long as finding multiple boundary points in emergent region on photograph, and obtains these points using DTM and existed
Elevation in characteristic point grid, it is possible to form emergent region, and obtain the data such as the scope, landform and area in the region, be
Emergency response provides decision support.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510064806.1A CN104634324B (en) | 2015-02-06 | 2015-02-06 | A kind of arbitrarily photograph single-phase coordinates the technical method of the emergent regional space state of DTM positioning |
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| CN201510064806.1A CN104634324B (en) | 2015-02-06 | 2015-02-06 | A kind of arbitrarily photograph single-phase coordinates the technical method of the emergent regional space state of DTM positioning |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105865422A (en) * | 2016-03-24 | 2016-08-17 | 北京林业大学 | Method for positioning forest fire at night via unmanned aerial vehicle |
| CN105865425A (en) * | 2016-03-24 | 2016-08-17 | 北京林业大学 | Technical method for determining essential factors of huge ancient and famous trees by using CCD total station stereopair photography |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08321875A (en) * | 1995-05-25 | 1996-12-03 | Hitachi Ltd | Portable telephone set |
| CN103150754A (en) * | 2011-12-06 | 2013-06-12 | 泰瑞数创科技(北京)有限公司 | Moving object locating and tracking technique based on three-dimensional geographic information technique |
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| US8422825B1 (en) * | 2008-11-05 | 2013-04-16 | Hover Inc. | Method and system for geometry extraction, 3D visualization and analysis using arbitrary oblique imagery |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08321875A (en) * | 1995-05-25 | 1996-12-03 | Hitachi Ltd | Portable telephone set |
| CN103150754A (en) * | 2011-12-06 | 2013-06-12 | 泰瑞数创科技(北京)有限公司 | Moving object locating and tracking technique based on three-dimensional geographic information technique |
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