CN108088378A - A kind of ordinary digital camera forest with connecting final proof photogrammetric survey method - Google Patents
A kind of ordinary digital camera forest with connecting final proof photogrammetric survey method Download PDFInfo
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- CN108088378A CN108088378A CN201611039795.2A CN201611039795A CN108088378A CN 108088378 A CN108088378 A CN 108088378A CN 201611039795 A CN201611039795 A CN 201611039795A CN 108088378 A CN108088378 A CN 108088378A
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Classifications
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- 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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
-
- 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
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0035—Measuring of dimensions of trees
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Botany (AREA)
- Multimedia (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of ordinary digital camera forest with connecting final proof photogrammetric survey methods.The technology selects suitable digital camera as measuring apparatus first, then stands an apparent line rod respectively on permanent sample plot central point and four boundary points, wherein, known to the coordinate of this five location points；Secondly, periphery carries out arbitrary photography to it in sample, and every photography photo is made at least to be imaged three line rods；When sample trees are sparse, 2 photos of diagonally photographing, when sample trees are closeer, four borders need 4 photos of photographing；Then by collinearity equation and the known control point of 3 or more is coordinated to every photo, resolves the object coordinates of the corresponding spatial point of arbitrary picture point；Finally using the coordinate of interest points acquired, cooperation photography photo determines seeds, the diameter of a cross-section of a tree trunk 1.3 meters above the ground, tree height, sample trees coordinate information.
Description
First, technical field
It is particularly a kind of to utilize ordinary digital camera forest the present invention relates to a kind of forest with connecting final proof photogrammetric survey method
With connecting final proof photogrammetric survey method.
2nd, technical background
It is all to carry out Investigation for per wood with diameter of a cross-section of a tree trunk 1.3 meters above the ground ruler, height finder to measure to traditional forest final proof to forest sample, inside and outside
Industry detection calculates, the substantial amounts of personnel's input of statistical work needs, and not only work efficiency is low and precision is poor.In recent years, with
Photogrammetric be applied in forestry is necessarily to be become by the rapid development of photogrammetric technology.Using digital camera in forest sample
Ground is shot, and can quickly determine seeds, the diameter of a cross-section of a tree trunk 1.3 meters above the ground, tree height, sample trees coordinate information, and this method only needs one man operation,
It is simple and convenient, it is saves time and effort.The present invention exactly proposes in this context.
3rd, the content of invention
In order to which traditional forest is overcome to measure the shortcomings that work efficiency is low, time-consuming and laborious with connecting final proof, the present invention proposes one
Plant ordinary digital camera forest with connecting final proof photogrammetric survey method.
The purpose of the present invention is such：
Suitable digital camera is selected first as measuring apparatus, then on permanent sample plot central point and four boundary points
An apparent line rod is stood respectively, wherein, known to the coordinate of this five location points；Secondly, it is arbitrarily taken the photograph in periphery in sample
Shadow makes every photography photo at least be imaged three line rods；When sample trees are sparse, diagonally photograph 2 photos, when sample trees are closeer, four
Border needs 4 photos of photographing；Then by collinearity equation and the known control point of 3 or more is coordinated to every photo, resolved
The object coordinates of the corresponding spatial point of arbitrary picture point；Finally using the coordinate of interest points acquired, cooperation photography photo determines tree
Kind, the diameter of a cross-section of a tree trunk 1.3 meters above the ground, tree are high, sample trees coordinate information.
This invention has the following advantages compared with existing conventional method：
(1) measuring apparatus has larger improvement, one man operation digital camera is only needed to carry out shooting photo in sample ground, simply
It is convenient；
(2) only need to set up an instrument, you can be basically completed the measurement that forest connects final proof ground, substantially increase forest connect it is clear
The work efficiency measured sample；
(3) seeds in sample ground, the diameter of a cross-section of a tree trunk 1.3 meters above the ground, tree height, sample trees coordinate information can be quickly checked, forest is improved and surveys with connecting final proof
The accuracy of amount.
4th, illustrate：
The present invention is further described with example below in conjunction with the accompanying drawings.
Fig. 1 photogrammetric coordinate system principle schematics for sample；
Fig. 2 is with connecting final proof photographic observation scheme schematic diagram.
5th, specific embodiment：
A kind of ordinary digital camera forest with connecting final proof photogrammetric survey method with existing forest sample even compared with clearing method,
Larger improvement and innovation are made in operating method and resolving model accuracy, have been specifically：
(1) the ordinary digital camera conduct of 60 ° of transverse field angle ＞, longitudinal field angle >=45 °, focal length f=20mm are selected
Measuring apparatus；
(2) an apparent line rod is stood respectively on permanent sample plot central point and four boundary points, wherein, this five location points
Coordinate it is known that as shown in Figure 1；
(3) periphery carries out arbitrary photography to it in sample, and every photography photo is made at least to be imaged three line rods；Sample trees are sparse
When, 2 photos of diagonally photographing, when sample trees are closeer, four borders need 4 photos of photographing, as shown in Figure 2；
(4) every photo is resolved, using mathematical model 1.
Wherein, (x, y) is the image space coordinate of picture point, and (X, Y, Z) corresponds to object coordinates for picture point, (XS, YS, ZS) it is photography
The object coordinates at center, ai、bi、ci(i=1,2,3) serves as reasonsThe spin matrix coefficient that tri- attitude angles of ω, κ determine, cooperation 3
A above known control point resolves the object coordinates of the corresponding spatial point of arbitrary picture point；
(5) using the coordinate of interest points acquired, cooperation photography photo determines seeds, the diameter of a cross-section of a tree trunk 1.3 meters above the ground, tree height, sample trees coordinate information.
Claims (1)
1. a kind of ordinary digital camera forest with connecting final proof photogrammetric survey method, it is characterized in that：
1) 60 ° of transverse field angle ＞, longitudinal field angle >=45 °, the ordinary digital camera of focal length f=20mm is selected to be set as measurement
It is standby；
2) an apparent line rod is stood respectively on permanent sample plot central point and four boundary points, wherein, the seat of this five location points
Known to mark；
3) periphery carries out arbitrary photography to it in sample, and every photography photo is made at least to be imaged three line rods；It is right when sample trees are sparse
2 photos of angle photography, when sample trees are closeer, four borders need 4 photos of photographing；
4) every photo is resolved, using mathematical model 1.
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Wherein, (x, y) is the image space coordinate of picture point, and (X, Y, Z) corresponds to object coordinates for picture point, (XS, YS, ZS) it is photo centre
Object coordinates, ai、bi、ci(i=1,2,3) serves as reasonsThe spin matrix coefficient that tri- attitude angles of ω, κ determine, cooperation 3 with
On known control point, resolve the object coordinates of the corresponding spatial point of arbitrary picture point；
5) using the coordinate of interest points acquired, cooperation photography photo determines seeds, the diameter of a cross-section of a tree trunk 1.3 meters above the ground, tree height, sample trees coordinate information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039795.2A CN108088378A (en) | 2016-11-23 | 2016-11-23 | A kind of ordinary digital camera forest with connecting final proof photogrammetric survey method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039795.2A CN108088378A (en) | 2016-11-23 | 2016-11-23 | A kind of ordinary digital camera forest with connecting final proof photogrammetric survey method |
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| Publication Number | Publication Date |
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| CN108088378A true CN108088378A (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611039795.2A Pending CN108088378A (en) | 2016-11-23 | 2016-11-23 | A kind of ordinary digital camera forest with connecting final proof photogrammetric survey method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613941A (en) * | 2015-01-30 | 2015-05-13 | 北京林业大学 | Analysis method of terrestrial photograph Kappa and Omega angle with vertical base line |
| CN104613940A (en) * | 2015-02-05 | 2015-05-13 | 北京林业大学 | Scheme for photographing and measuring forest permanent sample plot |
-
2016
- 2016-11-23 CN CN201611039795.2A patent/CN108088378A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613941A (en) * | 2015-01-30 | 2015-05-13 | 北京林业大学 | Analysis method of terrestrial photograph Kappa and Omega angle with vertical base line |
| CN104613940A (en) * | 2015-02-05 | 2015-05-13 | 北京林业大学 | Scheme for photographing and measuring forest permanent sample plot |
Non-Patent Citations (1)
| Title |
|---|
| 赵芳: "测树因子遥感获取方法研究", 《中国博士学位论文全文数据库 农业科技辑》 * |
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Application publication date: 20180529 |
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