Method for analyzing micro-density image of tree annual ring

A technology for tree rings and density images, applied in the field of electronic information, can solve the problems of low measurement efficiency, expensive X-ray densitometer measurement, and low precision, and achieve the effects of enhancing image brightness, eliminating noise, and correcting background errors.

Inactive Publication Date: 2009-01-28
ANHUI AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0003] In order to overcome the disadvantages of low measurement efficiency and low precision of the traditional weighing method and the high price of the X-ray densitometer measurement method, the present invention provides a me...

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  • Method for analyzing micro-density image of tree annual ring
  • Method for analyzing micro-density image of tree annual ring
  • Method for analyzing micro-density image of tree annual ring

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Embodiment Construction

[0012] The tree ring density image analysis technology is to analyze the reflected light or transmitted light image to obtain the image brightness data, and directly measure the object density by using the linear relationship between the gray value of the image and the density of the penetrating object material. Such as figure 1 As shown, the tree ring density image analysis system includes several processes such as image reading and writing, image processing, density calibration, data storage, chart display, and printing.

[0013] 1. Image reading and writing: After running the system, if the background of the imported tree ring reflected light or transmitted light image is uniform, the 'mathematical morphology correction method' is used; if the background is uneven, the 'subtraction correction method' is used for correction. Mathematical morphology correction imports a processed image, and subtraction correction imports two original and background images (the two images have...

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Abstract

The invention discloses a method for analyzing wood growth ring micro-density images, which belongs to the field of electronic information, in particular to a method for collecting and analyzing the wood growth ring micro-density images. Growth ring micro-density measuring methods include traditional weighing methods and X ray densimeter methods, etc. The traditional weighing methods are simple, but have low measuring efficiency and low precision. The X ray densimeter methods have high measuring precision but expensive price. The method for analyzing the wood growth ring micro-density images of the invention builds universal high-precision processing techniques and application platforms of the wood growth ring images, and adopts self-adaptive wave filtering, histogram equalizing technique, mathematical morphology and image difference methodology for processing the wood growth ring images so as to eliminate noise, increase image brightness and rectify background error. The method for analyzing the wood growth ring micro-density images can analyze X ray images, scanning images and digital camera images, etc., measure not only growth ring density but also growth ring width, and implement intuitive cross dating during measurement.

Description

Technical field: [0001] A method for analyzing micro-density images of tree rings belongs to the field of electronic information, specifically an image method for collecting and analyzing micro-density images of tree rings. Background technique: [0002] Wood density refers to the mass of wood per unit volume, often referring to the average density. Tree ring density refers to the density within a narrow range within the rings. The traditional determination of wood density is obtained by measuring volume and mass. Generally, it can only study the level of average density of growth rings. With the continuous improvement and perfection of measurement methods and technologies, wood density has developed from average density to annual density. Determination of density and density distribution in the wheel. At present, wood physics, biogenetics, dendrochronology, tree-ring climatology, tree-ring ecology, and tree-ring hydrology all use the components of tree-ring density as a t...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01N33/46G06F19/00G06T5/00
Inventor 刘盛全夏萍周亮徐斌印崧
Owner ANHUI AGRICULTURAL UNIVERSITY
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