Photography measurement object space control rod and its use method

A technology of photogrammetry and joystick, which is applied in photogrammetry/video metrology, measuring devices, surveying and mapping and navigation, etc. It can solve problems such as difficulties in obtaining internal and external orientation elements, and achieve the effect of improving accuracy and efficiency

Inactive Publication Date: 2008-11-05
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problem that it is difficult to obtain the internal and external orientation elements in the close-range digital photogrammetry of a single photo, the purpose of the present invention is to provide a photogrammetric object space control rod and its use method

Method used

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  • Photography measurement object space control rod and its use method
  • Photography measurement object space control rod and its use method
  • Photography measurement object space control rod and its use method

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Embodiment Construction

[0021] 1) Photogrammetric object space control rod: Design the object space control rod with scale in the spatial three-dimensional mode, and assist the single-photograph photogrammetry to obtain the spatial coordinates of the object space control point. Such as figure 1 , 2 As shown, the entire control rod is composed of three aluminum alloy metal rods with centimeter-level scales, including a main rod and two support rods. Such as image 3 The design length of the main rod shown is 2.000 meters and the design length of the support rod is 1.838 meters. The height of the joint point between the main pole and the support pole is 1.300 meters, the angle formed by the main pole and each support pole is 45°, and the two planes formed by the main pole and the two support poles are perpendicular to each other, which is used to determine the control on the pole. The spatial coordinates of the point.

[0022] 2) How to use the photogrammetry object space control rod: ①Find a stand...

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Abstract

The invention discloses a photograph measurement object control rod and a using method, wherein the object control rod is composed of three metal rods with the scale of centimeter, including a main rod and two branch rods. The main rod is vertical to the two planes comprising two branch rods, used for determining the space coordinate of the control point on the rods, when in the estimate survey of signal photo, the main rod of the object control rod is vertical to the measured object. The compass is used to orientate, to make the magnetic bearing be 90 degree formed by the branch rod and the main rod on the plane direction. When in the photograph, the photo is guided to the estimate survey software of the close shot photograph uniwafer, the photo coordinates of the six control points are selected on the photos, wherein the object coordinates of the six control points are read from the scales of the object control rod. The photo coordinate and the object coordinate are linked by the collinearity equation, and the object coordinate of the any point can be figured out through the DLT linear transform.

Description

1. Technical field [0001] The invention relates to a photogrammetry auxiliary instrument and its use method, in particular to a photogrammetry object space control rod and its use method. 2. Technical Background [0002] So far, when applying the close-range photogrammetry technology for tree measurement, the measurement camera and the non-measurement camera are generally used to take multiple photos to measure the tree. Through these technologies, a higher tree measurement can be obtained. Measured values ​​for efficiency and more. When using single-photograph tree measurement, it is necessary to use the auxiliary tools of three-dimensional control field and benchmark. [0003] However, the above methods have their disadvantages: [0004] ①Using a measurement camera to measure trees is expensive, bulky and inconvenient to move. [0005] ②Using a non-measurement camera to measure trees, the internal and external orientation elements in the solution equation are unknown, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/00G01B11/00
Inventor 赵春江冯仲科姚山刘云伟
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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