Estimate survey technique using metric camera cooperating with theodolite

A theodolite, electronic theodolite technology, applied in photogrammetry/video surveying, instruments, measuring devices, etc., can solve the problems of cumbersome steps, slow speed, low efficiency, etc.

Inactive Publication Date: 2008-11-05
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology

[0004] ①Using single-point acquisition methods such as tape measure plus electronic theodolite or total station is slow and inefficient, and the instrument is inconvenient to carry, and the steps of setting up the instrument, moving the station, and leveling the instrument are cumbersome and time-consuming
[0006] ③Using a non-meas...

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  • Estimate survey technique using metric camera cooperating with theodolite
  • Estimate survey technique using metric camera cooperating with theodolite
  • Estimate survey technique using metric camera cooperating with theodolite

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Embodiment Construction

[0027] 1. Implementation method of practical measurement camera with electronic theodolite to measure tree

[0028] (1) Establish a coordinate system: take the intersection point of the three axes of the theodolite at point A as the origin (0, 0, 0), take the vertical direction passing through the origin as the Z axis, and connect the intersection points A and B of the three axes of the two instruments on the horizontal plane The projection of is the X axis, the direction perpendicular to the xz plane is the Y axis, and xyz constitutes a right-hand measurement coordinate system. In the measurement coordinate system, let the horizontal projection b of AB be the base line length, and the height difference of AB is Δh.

[0029] (2) Accurately determine the height difference between the baseline length b and AB as Δh, such as image 3 , place a ruler with a known length horizontally at a position on both sides of the baseline that is convenient for observation as the standard len...

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Abstract

The invention discloses a technology for measuring the camera cooperation theodolite double image estimate survey, which uses the measurement camera, the electronical theodolite as the tool, wherein the inner orientation element is unknown and the outer orientation element is known to realize to measure the height of the stumpage by measuring the camera cooperation theodolite double image estimate surve. First, the axiallateral method of the space front is used to obtain the coordinate of the control point, then, the measurement camera is adopted to obtain the two imaged in the area to be measured, and the homologous image point of the two images are used to list the error equation, thereby resolving the outer orientation element of the two images, finally the light beam method is used to process the error compensation. The measurement method can simply and fast measure the tree height of the stumpage, overcomes the defect in the traditional technology.

Description

1. Technical field [0001] The invention relates to a technology of digital close-range photography tree measurement, in particular to a technology of tree measurement with a measurement camera and theodolite. 2. Background technology [0002] From the application situation at home and abroad, in the forest resources survey, the measurement of standing trees generally adopts single-point acquisition methods such as tape measure and electronic theodolite or total station. Tree-measuring techniques with measuring cameras and non-measuring cameras take multiple photos to measure trees. Through these techniques, higher tree-measuring efficiency and measurement values ​​of more parts can be obtained. [0003] However, all of the above methods have their disadvantages: [0004] ①Single-point acquisition methods such as tape measure plus electronic theodolite or total station are slow and inefficient, the instrument is inconvenient to carry, and the steps of setting up the instrume...

Claims

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Application Information

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IPC IPC(8): G01B11/02G01B11/03G01C11/00G01C11/06
Inventor 冯仲科姚山吴露露刘永霞袁进军邹晓涛聂伟
Owner BEIJING FORESTRY UNIVERSITY
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