CN103267516A - Sample plot measuring technology by using digital camera as tool - Google Patents
Sample plot measuring technology by using digital camera as tool Download PDFInfo
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- CN103267516A CN103267516A CN2013100608116A CN201310060811A CN103267516A CN 103267516 A CN103267516 A CN 103267516A CN 2013100608116 A CN2013100608116 A CN 2013100608116A CN 201310060811 A CN201310060811 A CN 201310060811A CN 103267516 A CN103267516 A CN 103267516A
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Abstract
The invention a sample plot measuring technology by using a digital camera as a tool. The digital camera is used as the tool to measure the sample plot information. Tree diameter at breast height, tree height, and relative coordinates are extracted through a method. Sample plot information calculation is achieved through a computational formula. The accuracy of sample plot information is greatly improved. The defects that accuracy is low for a simple method in past sample plot information measuring and the process is complex for high accuracy are overcome.
Description
One, technical field
The present invention relates to a kind of is the sample ground measuring method of instrument with the digital camera, particularly utilizes digital camera to be the sample ground information measuring of instrument.
Two, technical background
Traditional measuring forest technological means falls behind, and is based upon on the basis of handworks such as angle gauge is measured, felled tree is resolved, the interpretation of boat sheet, and the cycle is long, and efficient is low, and low precision can not adapt to the monitoring requirements to the forest reserves and ecologic environment far away.It is the macroscopic view of major technique, extensive stage that domestic monitoring for forest only is confined to remote sensing and conventional ground investigation.Accurately measuring of some index, problems such as the theory of obtaining as data such as sample ground mean height, average density, accumulation, biomasss, technology, instrument also are far from solving gratifying degree.
So the acquisition methods of traditional sample ground information etc. is subjected to the restriction of forest mesorelief complicated factor in forest resource monitoring, what make these data obtains that workload is big, precision is not high, and realizing therefore that these data are quick and precisely obtained becomes this area scientific and technical personnel problem anxious to be solved.The present invention simplifies field operation and measures by various effective processing of the data using digital camera and obtain, in measuring process, carry out the data storage automatically and handle, set up mathematical model, utilize intelligent in the system model of industry calculating.This system combination measurement of coordinates, area measurement, cubing, multiple apart from measurement of angle etc. in the industry processing capacity in one, promoted the speed that interior industry data are handled comprehensively, intellectuality and accuracy have effectively improved the means of forest monitoring technology measuring and calculating.
Three, summary of the invention
Long for the data acquisition cycle that overcomes classic method, efficient is low, the shortcoming of low precision, raise the efficiency and precision, realize the accurately measuring of stem volume, the invention provides a kind of is the sample ground instrumentation technology of instrument with the digital camera, it is characterized in that: be instrument with the digital camera, design novel station scale, judge the visible diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, the relative coordinate of setting in the sample ground by the reading in the scale of station and the position in the photo by algorithm, by extracting the diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, relative coordinate calculating sample ground information.
Main summary of the invention:
1. the design of novel station scale;
2. the foundation of picture data regression equation;
3. the trunk diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, relative coordinate obtains;
4. sample ground information model is set up.
This invention is compared with existing method and is had the following advantages:
(1) improved stem volume instrumentation work efficiency, needed to use multiple survey instrument in traditional stem volume measuring process, and need hand-kept, operation is loaded down with trivial details.The present invention directly measures and stores data reduction field operation process by digital camera, extracts the trunk diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, relative coordinate at computing machine, by calculated with mathematical model sample ground information.Realize intelligent, integrated, high reliability.Alleviate measurement operation intensity to a certain extent, expanded the business field of instrument of surveying and mapping.
(2) realized high-acruracy survey to sample ground information, classic method measures comparatively simple, and error is big.Can realize the accurate measurement of trunk peripheral characteristic point by digital camera, calculate simple and efficient.
Four, description of drawings
The present invention is further described below in conjunction with accompanying drawing and example.
Fig. 1 is novel station scale sign indicating number, and Fig. 2 is novel station scale, and Fig. 3 is sample ground photo handling principle figure.
Five, embodiment:
Different with existing method based on digital camera list wood measuring method, specifically be:
(1) the novel scale sign indicating number of design with 2cm be symbol width and adjacent code element between distance, 4cm is the reference code width, adopting 6 cray is information code, novel station scale constitutes by two this novel scale sign indicating numbers are orthogonal;
(2) choose single wood and well take a picture with digital camera in the observation scope, during photograph novel scale is placed on the trunk center
(3) read data value A (x on the yardstick by photo
A, y
A, z
A) and B (x
B, y
B, z
B) wait and photo relevant position formation regression equation
Find the solution the unknown value of the correspondence in the regression equation;
(4) differentiate trunk marginal position in the photo by pixel value, find the solution the coordinate at the trunk edge that interpretation goes out again by the regression equation that constitutes in the step 3), solve the diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, the trees relative coordinate of trunk any position by coordinate;
(5) by extracting the diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, relative coordinate calculating sample ground information.
Claims (3)
1. one kind is the sample ground instrumentation technology of instrument with the digital camera, it is characterized in that: be instrument with the digital camera, design forest measuration type station scale, judge the visible diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, the relative coordinate of setting in the sample ground by the reading in the scale of forest measuration type station and the position in the photo by algorithm, by extracting the diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, relative coordinate calculating sample ground information.
2. the forest measuration type scale sign indicating number method for designing in claims 1 is as follows: with 2cm be symbol width and adjacent code element between distance, 4cm is the reference code width, the code element height is 4cm, adopts 6 information code elements, and the forest measuration type scale constitutes by two this scale sign indicating numbers are orthogonal.
3. the algorithm of the diameter of a cross-section of a tree trunk 1.3 meters above the ground of setting in the judgement sample ground in claims 1, the height of tree, relative coordinate is as follows:
1) chooses single wood and well take a picture with digital camera in the observation scope, during photograph novel scale is placed on the trunk center;
2) read data value A (x on the yardstick by photo
A, y
A, z
A) and B (x
B, y
B, z
B) wait and photo relevant position formation regression equation
Find the solution the unknown value of the correspondence in the regression equation;
3) differentiate trunk marginal position in the photo by gray-scale value in the photograph, again by step 2) in the regression equation of formation find the solution the coordinate at the trunk edge that interpretation goes out, solve the diameter of a cross-section of a tree trunk 1.3 meters above the ground, the height of tree, the trees relative coordinate of trunk any position by coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100608116A CN103267516A (en) | 2013-02-27 | 2013-02-27 | Sample plot measuring technology by using digital camera as tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100608116A CN103267516A (en) | 2013-02-27 | 2013-02-27 | Sample plot measuring technology by using digital camera as tool |
Publications (1)
| Publication Number | Publication Date |
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| CN103267516A true CN103267516A (en) | 2013-08-28 |
Family
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| CN2013100608116A Pending CN103267516A (en) | 2013-02-27 | 2013-02-27 | Sample plot measuring technology by using digital camera as tool |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103942520A (en) * | 2014-03-04 | 2014-07-23 | 北京林业大学 | Forest permanent sample plot survey bar code ruler and use method thereof |
| CN105953776A (en) * | 2016-04-28 | 2016-09-21 | 北京派得伟业科技发展有限公司 | Stereophotogrammetric survey-based method for obtaining morphological parameters of maize plant |
| CN111504208A (en) * | 2020-05-21 | 2020-08-07 | 南京鸿亦沄智能科技有限公司 | Non-contact tree breast height diameter measuring method and system based on computer vision |
| CN112880556A (en) * | 2021-01-06 | 2021-06-01 | 南京林业大学 | Method for generating accurate codes of forest stand survey sample trees through three-dimensional laser scanning of foundation |
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| US20040236535A1 (en) * | 2003-03-31 | 2004-11-25 | Geodeettinen Laitos | Method, apparatus and program for determining growth of trees |
| CN1975323A (en) * | 2006-12-19 | 2007-06-06 | 南京航空航天大学 | Method for making three-dimensional measurement of objects utilizing single digital camera to freely shoot |
| CN101021409A (en) * | 2006-11-22 | 2007-08-22 | 北京林业大学 | Close-range ordinery digital camera tree metering method |
| 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 |
| CN101482396A (en) * | 2008-10-20 | 2009-07-15 | 华南理工大学 | Measuring method for cellular concrete surface pore diameter |
| CN102809371A (en) * | 2011-06-01 | 2012-12-05 | 华东师范大学 | Method for obtaining three-dimensional information by using field depth of planar picture and application of method |
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2013
- 2013-02-27 CN CN2013100608116A patent/CN103267516A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040236535A1 (en) * | 2003-03-31 | 2004-11-25 | Geodeettinen Laitos | Method, apparatus and program for determining growth of trees |
| CN101021409A (en) * | 2006-11-22 | 2007-08-22 | 北京林业大学 | Close-range ordinery digital camera tree metering method |
| CN1975323A (en) * | 2006-12-19 | 2007-06-06 | 南京航空航天大学 | Method for making three-dimensional measurement of objects utilizing single digital camera to freely shoot |
| 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 |
| CN101482396A (en) * | 2008-10-20 | 2009-07-15 | 华南理工大学 | Measuring method for cellular concrete surface pore diameter |
| CN102809371A (en) * | 2011-06-01 | 2012-12-05 | 华东师范大学 | Method for obtaining three-dimensional information by using field depth of planar picture and application of method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103942520A (en) * | 2014-03-04 | 2014-07-23 | 北京林业大学 | Forest permanent sample plot survey bar code ruler and use method thereof |
| CN105953776A (en) * | 2016-04-28 | 2016-09-21 | 北京派得伟业科技发展有限公司 | Stereophotogrammetric survey-based method for obtaining morphological parameters of maize plant |
| CN111504208A (en) * | 2020-05-21 | 2020-08-07 | 南京鸿亦沄智能科技有限公司 | Non-contact tree breast height diameter measuring method and system based on computer vision |
| CN112880556A (en) * | 2021-01-06 | 2021-06-01 | 南京林业大学 | Method for generating accurate codes of forest stand survey sample trees through three-dimensional laser scanning of foundation |
| CN112880556B (en) * | 2021-01-06 | 2022-04-22 | 南京林业大学 | Method for determining forest stand standard ground sample wood position through three-dimensional laser scanning of foundation |
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Application publication date: 20130828 |