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Operation method for carrying out large-scale mapping by using unmanned aerial vehicle of non-measurement camera

A scale, drone technology, applied in photogrammetry/video surveying, measuring devices, surveying and navigation, etc., can solve the problem that light drones are difficult to apply to large-scale surveying projects in mountainous areas, and reduce equipment costs. Effect

Active Publication Date: 2019-11-22
GUIZHOU ELECTRIC POWER DESIGN INST
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  • Abstract
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an operation method for large-scale mapping using a UAV with a non-measuring camera, so as to solve the problem that it is difficult for a light-duty UAV equipped with a non-measuring camera to be used in large-scale areas in mountainous areas. Problems in surveying engineering

Method used

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  • Operation method for carrying out large-scale mapping by using unmanned aerial vehicle of non-measurement camera

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Embodiment

[0037] This embodiment provides an operation method for large-scale surveying with a drone that is not a measuring camera, including the following steps:

[0038] S1. Select a suitable drone and non-measurement camera according to the aerial survey task book, and determine the surveying range on the scale map;

[0039] S2. Calibrate the camera to obtain lens distortion parameters;

[0040] S3, select the size of the grid layout on the map;

[0041] S4, according to the grid size determined in the step S3, evenly draw the grid within the surveying map boundary line range determined by the step S1 on the survey map, and number the grid;

[0042]S5, check the terrain in each grid determined by step S4, determine the terrain feature points in the grid according to the terrain on the map, use the terrain feature points at this place as image control points, in the grid without terrain feature points Evenly set grid points as image control points, and record the coordinates of all...

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Abstract

The invention discloses an operation method for carrying out large-scale mapping by using an unmanned aerial vehicle of a non-measurement camera, which belongs to the technical field of power engineering survey. The method comprises the following steps of (1) receiving an aerial survey task, (2) performing camera calibration to obtain lens distortion parameters, (3) designing a gridding phase control point layout scheme, and performing optimizing, (4) arranging a gridding phase control point on site and collecting the coordinates, (5) aerial survey task design including aerial photography partitioning, aerial height design and overlapping degree design, (6) flight preparation work including inspection of aircraft propellers, batteries, memory cards, camera working performance and the like,(7) carrying out field flight operation, and (8) flight data processing. By means of the operation method, a light multi-rotor unmanned aerial vehicle can be applied to a large-scale mapping task, the equipment use cost is greatly reduced, and the operation risk is reduced.

Description

technical field [0001] The invention relates to the technical field of electric power engineering surveying, in particular to an operation method for large-scale surveying with an unmanned aerial vehicle other than a measuring camera. Background technique [0002] When the light-duty UAV aerial photography system is applied in large-scale mapping, the traditional center projection equation and aerial photogrammetry operation mode are mainly inapplicable for the following three reasons: (1) Due to its small weight, it is easily affected by wind , resulting in unstable flight attitude, large photo deflection angle, blurred photos, and large route curvature; (2) The non-professional measurement camera equipped with it has a small image size and large lens distortion; (3) Ordinary drones The pos system has poor positioning and attitude determination accuracy and cannot meet the accuracy requirements of aerial photogrammetry. [0003] Aiming at the problems caused by light UAV d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/00G01C11/04
CPCG01C11/00G01C11/04
Inventor 何林徐静张雷程伟唐锡彬皇建胡红兵刘永杨建华王得洪董鹏杨乾高元任文龙王宏胜王建成赵乐
Owner GUIZHOU ELECTRIC POWER DESIGN INST
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