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Stereo image-pickup tree measruing instrument and its fully-automatic tree-measuring method

A technology of stereo camera and dendrometer, which is applied in the field of forest resource investigation, can solve the problems of inconvenience, large error, inseparability, etc., and achieve the effect of broad market prospects

Inactive Publication Date: 2006-08-09
RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that it has poor adaptability to various shapes of forest trunks and large errors
Its shortcoming is that it is still inseparable from the aid of the ruler when measuring the distance and dry diameter, which is somewhat inconvenient
[0012] 2. The application of stereo vision technology for information collection is the direction of the development of angle gauges. At present, it is only in the initial stage of exploration and no relevant breakthrough reports have been seen.
However, there are still many technical problems

Method used

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  • Stereo image-pickup tree measruing instrument and its fully-automatic tree-measuring method
  • Stereo image-pickup tree measruing instrument and its fully-automatic tree-measuring method
  • Stereo image-pickup tree measruing instrument and its fully-automatic tree-measuring method

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Experimental program
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Effect test

Embodiment Construction

[0084] The specific implementation process is completely carried out under the prompt of the photogrammetry software.

[0085] First find the sample plot and its nearest measurement control point, and input the geographic coordinates of the control point. Then, through the scaleless distance measurement and precise positioning data provided by the compass, vertical disk and binocular camera, the branch wires are quickly laid out in the direction of the square gauge point, and the geographic location coordinates of the square gauge point are determined and input at the end point. Finally, the "start" command can be issued on the angle gauge point, and the angle gauge sectional area coefficient Fg can be input according to the actual situation of the forest stand, and the auxiliary height angle α b , approximate shape point height angle α a , displayed on the screen.

[0086] During the winding test, the two cooperated. One person observes the camera, and the other person mar...

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Abstract

Present invention discloses a stereo camera shot dendrometer and full automaticity tree measuring method. It combines point sampling tree measuring technology, photoelectric technology, measuring technique, stereovision technology, and computer technology. It can overcomes crown lapped intervisibility difficulty directly surveying volume increment of whole woods through three order camera shot, and obtaining forest sample area highest resolution image data to realize omnirange automatization of forest resources sampling survey. Said stereo camera shot dendrometer can be developed into stereo station instrument, stereo theodolite, magnetic compass without auxiliary reflector and scale.

Description

1. Technical field [0001] The invention relates to an instrument and a method for forest resource investigation, in particular to a stereo camera dendrometer for forest sampling survey and a fully automatic tree measuring method. It is a multidisciplinary combination of square gauge point sampling tree measurement technology, photoelectric technology, stereo vision technology and computer technology. This new and efficient forest sampling survey method can provide a technology for obtaining forest stand survey factors for high-resolution remote sensing images. As part of Digital Forestry (Digita Forestry), the highest resolution image data obtained on the sample plot, together with the space remote sensing image data and aerial photogrammetry image data on the sample plot, form a multi-resolution image database. [0002] It is worth pointing out that the stereo camera dendrometer of the present invention can be developed into a stereo total station, a stereo electronic theodo...

Claims

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Application Information

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IPC IPC(8): G01C11/00G01C11/36
Inventor 李海奎徐祯祥
Owner RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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