Novel automatic aero-triangulation software

An automatic matching and self-calibration technology, applied in image data processing, special data processing applications, instruments, etc., can solve the problems of stationary digital cameras, increasing the difficulty of image matching and aerial triangulation, etc.

Inactive Publication Date: 2015-02-04
王涛
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Problems solved by technology

The important feature of low-altitude remote sensing images is that due to the influence of wind power and the control characteristics of the remote sensing platform itself, it is difficult for the remote sensing platform to fly in a straight line according to the route, and the attitude angle of the digital camera cannot be kept fixed. When shooting from multiple angles, the digital camera needs to constantly Changing the direction of the main optical axis will inevitably have a large difference

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Embodiment approach

[0012] The implementation plan of block adjustment for mid- and low-altitude remote sensing images is as follows:

[0013] The regional network adjustment mainly uses the connection points obtained by intelligent aerial three-dimensional matching, combined with the GPS / IMU data obtained by the remote sensing platform and possible ground control point data, to accurately solve the image orientation elements. Using the adjustment data and adjustment parameters, the initial value of the outer orientation element of the image and the initial value of the ground coordinates of the point with the same name are solved by the method of relative orientation and free network construction. Then establish equations for all observation data and perform legal processing. In this process, ground control points can be introduced to construct conditional equations and set the weight matrix of observation values. Then, the least squares method can be used to solve the algorithm equations t...

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Abstract

Novel automatic aero-triangulation software is disclosed. With wide application of unmanned aerial vehicles, responses to emergencies can be carried out by means of the unmanned aerial vehicles as a platform to perform photogrammetry. The software aims to aerial images, especially to aerial image treatment in the unmanned aerial vehicles. In the software, a feature extraction algorithm of large data is employed for treating the aerial images and a block adjustment of the large data is treated in a manner of internal and external memories, and meanwhile camera parameters are calculated.

Description

technical field [0001] The invention relates to a photogrammetry method and system for processing unmanned aerial vehicles and airborne aerial images. Background technique [0002] Unmanned aerial vehicles first appeared in 1917. The early development and application of unmanned aerial vehicles were mainly used as aircraft target drones, and the scope of application was concentrated in the military field. With the development of science and technology, its scope of application has gradually expanded to combat, reconnaissance and civilian remote sensing flight platforms. The technological revolution of the 1980s took drones a step further. With the rapid development of computer technology and communication technology and the continuous emergence of various new sensors that are digitized, weighted, small in size and high in detection accuracy, the performance of UAVs has been continuously improved, and the application range and application fields have been rapidly expanded....

Claims

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Application Information

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IPC IPC(8): G01C11/34G06T7/00G06F19/00
CPCG01C11/34G06T7/80
Inventor 王涛
Owner 王涛
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