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Aerial image aerial triangulation operation method

A technology for aerial triangulation and aerial imagery, which is applied in the interpretation of photos, etc., can solve the problems of many aerial triangulation equipment and long calculation time, and achieve the effect of shortening the construction period and reducing the number of computer equipment.

Active Publication Date: 2021-09-17
WUHAN TIANYUANSHI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses an operation method for air triangulation measurement of aerial images, aiming to solve the problems that the aerial triangulation measurement requires many equipments and long calculation time

Method used

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  • Aerial image aerial triangulation operation method

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Experimental program
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Effect test

Embodiment 1

[0023] The invention discloses an aerial image triangulation operation method, comprising the following steps:

[0024] Step 1: Divide multiple sub-survey areas according to the scope of the survey area and terrain conditions, and the number of divided sub-survey areas is N;

[0025] Step 2: Extract the images of the sub-survey areas through aerial photography, and perform aerial triangulation processing on the images of the sub-survey areas that have been extracted in turn;

[0026] In the step 2 of this embodiment, image extraction and triangulation processing work are relayed at the same time. For example, after the aerial photography of the first day is over, the image taken and extracted on that day is submitted as the first sub-survey area, Immediately start the aerial triangulation processing, use the night of the same day and the next day to complete the office processing of these images; continue the aerial photography during the next day, and submit the images taken ...

Embodiment 2

[0037] The method verification effect based on traditional method and embodiment 1 and carry out comparative analysis, test method is as follows:

[0038] Taking a survey area of ​​20 square kilometers as an example, it is planned to take aerial photos of 2 square kilometers every day, and use two operation schemes to process this survey area.

[0039] In the traditional operation plan, the aerial photography takes 10 days, the aeronautical triangulation office processing starts on the 11th day, and it takes 7 days to complete the aeronautical triangulation office processing, which takes a total of 17 days; the number of computer nodes required is 11.

[0040] Adopt the operation plan of embodiment 1, adopt the relay-type aerial triangulation operation plan, take aerial photography for ten days, start to process the images of the sub-survey areas of the day after the aerial photography ends every day, and finally complete the merging of the sub-survey areas in one day. 12 days...

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Abstract

The invention discloses an aerial image aerial triangulation operation method, relates to the field of aerial image measurement, and aims to solve the problems of more required equipment and long calculation time of aerial triangulation, and the aerial image aerial triangulation operation method comprises the following steps: dividing a plurality of sub-measurement areas according to a measurement area range and topographic conditions, the number of the divided sub-measurement areas being N; carrying out image extraction on the sub-measurement areas through aerial photography, carrying out aerial triangulation processing on the extracted sub-measurement area images, and extracting the images of the remaining sub-measurement areas while carrying out aerial triangulation processing until the images of all the sub-measurement areas are extracted and processed; and merging the processed data of the plurality of sub-test areas to obtain a complete test area. the aerial image aerial triangulation operation method which costs less computer equipment and is shorter in construction period is realized.

Description

technical field [0001] The invention relates to the field of aerial image measurement, in particular to an aerial image aerial triangulation operation method. Background technique [0002] The existing aerial triangulation of aerial images generally adopts the following scheme: first, formulate the flight plan according to the scope of the survey area and the terrain conditions; then according to the flight plan, use the drone to take aerial photos on the spot to obtain the aerial images of the survey area; Finally, after the aerial photography of all areas is completed, the data of the entire survey area is sorted out, and then the internal processing of aerial triangulation is started. In this technical solution, the aerial photography and office processing can only be performed serially, that is, the office processing must wait for the aerial photography to be completed before it can start to execute, and it has the following disadvantages: it takes a long time to complet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/34
CPCG01C11/34
Inventor 张勇聂丹李学川黄海鹏张佩
Owner WUHAN TIANYUANSHI TECH
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