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Hardware phase-control-free orientation processing method for aerial photography photos

A technology of aerial photography and processing method, applied in the field of aerial photography measurement, can solve the problems of low accuracy and low efficiency, achieve the effect of improving efficiency, simplifying the operation process, and avoiding the risk of solution failure

Inactive Publication Date: 2019-07-12
成都纵横融合科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is to provide a hardware-free phase control orientation processing method for aerial photographs to solve the problems of low efficiency and low accuracy in the orientation of aerial photographs in the traditional technology

Method used

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  • Hardware phase-control-free orientation processing method for aerial photography photos
  • Hardware phase-control-free orientation processing method for aerial photography photos
  • Hardware phase-control-free orientation processing method for aerial photography photos

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Effect test

Embodiment 1

[0047] In this embodiment, while utilizing the photogrammetry sensor to take aerial photography photos, the position information output by the GNSS system and the attitude information output by the INS system are obtained; The corresponding initial value of the solution is used to calculate the triangle in the air to obtain the precise position and attitude information of the photo and realize the orientation of the photo.

[0048] The specific steps of aerotriangulation calculation are as follows:

[0049] s1. Extract the real image point coordinates (x, y) of the feature points on the photo;

[0050] In this step, generally the real image point coordinates of the feature points are obtained by means of feature point matching (commonly used are SIFT, SURF, etc.), that is, the positions of the same point in different photos are found in the respective photos. It can also be obtained manually.

[0051] s2. Use the attitude information obtained in step s1 as the initial value ...

Embodiment 2

[0062] In this embodiment, while using the photogrammetry sensor to take aerial photography photos, the position information output by the GNSS system and the attitude information output by the INS system are obtained; The attitude information is directly used as the final position information and attitude information of the photo orientation, that is, the pose information of the photo has been obtained when the photo is taken, and the orientation processing of the photo is completed. Therefore, there is no need to arrange phase control points, which simplifies the operation process, and does not need to perform triangle calculation in the air, which greatly improves the efficiency of photo orientation and fundamentally avoids the risk of failure of calculation. Can be applied to fast orientation processing of photographs where certain precision requirements allow.

[0063] In the schemes of the above two embodiments, after obtaining the position and attitude information outpu...

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Abstract

The invention relates to an aerial photography measurement technology, discloses an aerial photography photo hardware phase-control-free orientation processing method, and solves the problems of low efficiency and low accuracy in aerial photography photo orientation in the prior art. Directional processing is carried out based on data provided by a GNSS / INS integrated navigation system, and the GNSS system, the INS system and the photogrammetry sensor are fixedly connected and share the same trigger acquisition system. Position information output by the GNSS system and attitude information output by the INS system are obtained while using the photogrammetric sensor to shoot aerial photograph; the obtained position information and attitude information are used as corresponding initial values for aerial triangle resolving during photo orientation, and aerial triangle resolving is performed to obtain accurate position and attitude information of the photo; under the condition that certainprecision requirements are allowed, the obtained position information and attitude information can even be directly used as final position information and attitude information of photo orientation. The method is suitable for efficient and accurate orientation processing of aerial photography photos.

Description

technical field [0001] The invention relates to aerial photography measurement technology, in particular to an aerial photography photo hardware-free phase control orientation processing method. Background technique [0002] Traditional aerial photogrammetry refers to the operation of continuously taking photos of the ground with aerial photography instruments on an aircraft, and drawing topographic maps in combination with ground control point measurement, surveying and mapping, and three-dimensional surveying and mapping. [0003] Traditional aerial photogrammetry requires a large amount of control point information as an auxiliary to ensure the reliability of the final result: after taking aerial photography photos, it is necessary to use ground control points and measurement photos distributed at specific locations to obtain corresponding image point coordinates And take the ground control point as the reference to carry out the least squares adjustment to determine the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/04
CPCG01C11/04
Inventor 邓填棣窦凡卢胜洪苟娟张宁波任斌
Owner 成都纵横融合科技有限公司
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