CN101718524A - Method for measuring and correcting annual ring width by image processing technology - Google Patents
Method for measuring and correcting annual ring width by image processing technology Download PDFInfo
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- CN101718524A CN101718524A CN200910138257A CN200910138257A CN101718524A CN 101718524 A CN101718524 A CN 101718524A CN 200910138257 A CN200910138257 A CN 200910138257A CN 200910138257 A CN200910138257 A CN 200910138257A CN 101718524 A CN101718524 A CN 101718524A
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- annual ring
- ring width
- image processing
- width
- annual
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Abstract
The invention discloses a new method for measuring and correcting annual ring width by image processing technology by means of image processing software Photoshop, comprising: scanning ground annual ring sample core; recording the annual ring coordinate and annual ring inclination angle under the help of the Photoshop software; and realizing accurate calculation of the annual ring width through an annual ring width measurement template which is automatically set up. The method realizing automatic correction of annual ring inclination, is characterized by being simple and convenient as well as easy to do, and is very convenient and effective for laboratories without a professional annual ring rotating degree measuring instrument.
Description
Technical field
The present invention relates to a kind of new method that measures and proofread and correct annual ring width by the Photoshop image processing software, particularly do not possess under the condition of professional annual ring measuring instrument in the laboratory, this method is very suitable.
Background technology
It is the basis of Dendrochronology research that annual ring width measures.For the tree ring scholar, only determine the age accurately, accurately measure the width of annual ring, information such as the weather that could further manage to study in the tree ring to be write down or hydrology.Measured the method for annual ring width both at home and abroad, over-borrowing helps special hardware to measure system, as the LINTAB numeric type analysis of annual rings instrument of Germany's production in the past.But the mensuration system of specialty comprises software and hardware, costs an arm and a leg, and is difficult in the laboratory that does not possess the financial support condition carry out.When directly utilizing microscope to measure, the mensuration of inclination annual ring is cumbersome, the more important thing is, checks time-consuming.Therefore, explore a kind of new method of how utilizing general soft hardware equipment to carry out year wheel measurement and correction, will be practical more, popularize easily.
Summary of the invention
The objective of the invention is to provide a kind of new method that measures annual ring width and correction, it is easy and simple to handle but also accuracy of judgement not only, as long as possess a computing machine and corresponding Photoshop image processing software ABC, the plain scan instrument can adopt the method.
Embodiment
The present invention measures " annual ring coordinate and degree of tilt " by the Photoshop image processing software and judges annual ring width.Its specific practice is that the annual ring image that scans is carried out following operation:
1. open Photoshop software; Open image, adjust image direction, size, unit, the backup original image is in order to check.
2. be provided with and measure 3 of line upper, middle and lowers, the interval of 2 mensuration lines is slightly less than the diameter of annual ring bar up and down, and center line is positioned at the two middle
3. take turns to heartwood interior from bark outermost layer wheel, at the image lower limb, an interval made marks in per 10 years; Look into after the several years wheel number, dated at the right-hand member of image.
4. measurement annual ring width.Set up the degree of tilt thresholding of permission as required on their own, check the annual ring of whole annual ring bar then, surpass making marks of domain value range.On center line, measure the image coordinate of annual ring, calculate annual ring width in view of the above.The inclination annual ring that surpasses the thresholding place, its width need to proofread and correct, and write down the pitch angle, and above information are filled in " horizontal ordinate " and " inclination angle " row of " annual ring width mensuration template "; Near the annual ring of marrow core segment, not only degree of tilt is big sometimes, and camber, is difficult to measure the pitch angle, can directly measure annual ring width, fills in " width " row of " annual ring width mensuration template ".
5. the inclination annual ring is proofreaied and correct: according to the trigonometric function principle, set up calculation template, the inclination annual ring is carried out from normal moveout correction.
The invention is characterized in, when measuring annual ring width, by popular image processing software Photoshop and set up voluntarily " annual ring width mensuration template ", realized inclination place annual ring width from normal moveout correction, both solved and do not possessed the breadboard trying situation that specialty measures annual ring width, provide a kind of easy and simple to handle again, practical annual ring method for measurement.And what write down in the mensuration process is the coordinate of annual ring in image, very convenient to the check of suspicious annual ring.
Studies show that, adopt the inventive method, can obtain annual ring width indirectly, and precision be reliable exactly by measuring coordinate information and inclination angle.The more important thing is that the present invention has started a new approach for the tree ring scholar measures annual ring width, do not need the expensive special measuring equipment of purchasing price, the saving funds are convenient to popularize.
Claims (4)
1. new method of utilizing image processing techniques that annual ring width is measured and proofreaies and correct, it is characterized in that the annual ring photo after the scanning, by Photoshop software, use various tool, record annual ring coordinate and pitch angle, converse information such as annual ring width and the wide index of wheel by " the annual ring width mensuration template " set up voluntarily, realized to the inclination annual ring from normal moveout correction.
2. according to claim 1, a kind of new method of utilizing image processing techniques that annual ring width is measured and proofreaies and correct, annual ring width after it is characterized in that scanning is measured, and writes down information on the annual ring by the Photoshop imgae processing software.
3. according to claim 1, a kind of new method of utilizing image processing techniques that annual ring width is measured and proofreaies and correct is characterized in that self-control " annual ring width mensuration template " can calculate annual ring width like clockwork.
4. according to claim 1, a kind of new method of utilizing image processing techniques that annual ring width is measured and proofreaies and correct, it is characterized in that realizing the inclination annual ring width from normal moveout correction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910138257A CN101718524A (en) | 2009-05-08 | 2009-05-08 | Method for measuring and correcting annual ring width by image processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910138257A CN101718524A (en) | 2009-05-08 | 2009-05-08 | Method for measuring and correcting annual ring width by image processing technology |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101859419A Division CN101922916A (en) | 2009-05-08 | 2009-05-08 | Tree ring width measuring error correction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101718524A true CN101718524A (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910138257A Pending CN101718524A (en) | 2009-05-08 | 2009-05-08 | Method for measuring and correcting annual ring width by image processing technology |
Country Status (1)
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| CN (1) | CN101718524A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006767A (en) * | 2014-05-26 | 2014-08-27 | 中国农业科学院油料作物研究所 | High-throughput plant type measurement method based on image processing |
| CN106152901A (en) * | 2015-04-27 | 2016-11-23 | 北京林业大学 | The assay method of a kind of annual ring width and system |
| CN106404777A (en) * | 2016-08-24 | 2017-02-15 | 河北农业大学 | Tree ring width measuring method based on digital photo image correction |
-
2009
- 2009-05-08 CN CN200910138257A patent/CN101718524A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006767A (en) * | 2014-05-26 | 2014-08-27 | 中国农业科学院油料作物研究所 | High-throughput plant type measurement method based on image processing |
| CN104006767B (en) * | 2014-05-26 | 2017-05-17 | 中国农业科学院油料作物研究所 | High-throughput plant type measurement method based on image processing |
| CN106152901A (en) * | 2015-04-27 | 2016-11-23 | 北京林业大学 | The assay method of a kind of annual ring width and system |
| CN106152901B (en) * | 2015-04-27 | 2019-05-10 | 北京林业大学 | A kind of measuring method and system of annual ring width |
| CN106404777A (en) * | 2016-08-24 | 2017-02-15 | 河北农业大学 | Tree ring width measuring method based on digital photo image correction |
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Open date: 20100602 |