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A method for extracting star point centroid of total station and its star image

An extraction method and the technology of a total station, applied in the field of image processing, can solve problems such as low efficiency and long time consumption, and achieve the effects of avoiding processing, shortening extraction time, and improving work efficiency

Inactive Publication Date: 2020-07-10
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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Problems solved by technology

[0005] The purpose of the present invention is to provide a total station and its method for extracting the star point centroid of the star image, aiming at greatly improving the star image processing speed of the image total station, realizing the fast extraction of the star point centroid, and ensuring the star point centroid extraction at the same time The accuracy is not lost, and the problem of long time-consuming and low efficiency in extracting the centroid of the existing technology is solved

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  • A method for extracting star point centroid of total station and its star image
  • A method for extracting star point centroid of total station and its star image
  • A method for extracting star point centroid of total station and its star image

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Embodiment Construction

[0048] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0049] A method for extracting a star point centroid of a total station stellar image of the present invention comprises the following steps:

[0050] (1) Obtain images of stars: Use the small field of view telephoto camera of the image total station to take pictures of stars. For example, use the Leica TS50i series video measurement robot (total station), which has a 1.5-degree telephoto camera, which can obtain higher quality star map image. figure 1 An image of the star taken in the field is shown.

[0051] (2) According to the shooting time of the star image, the approximate coordinates of the station and the star catalog, calculate the horizontal coordinates of the star (the azimuth and altitude angle of the star), that is, use the apparent position of the star to calculate the dynamic library and the Hipparcos star catalog, and use th...

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Abstract

The invention relates to a total station and a star image star centroid extraction method thereof, By calculating the horizontal coordinates of the stars relative to the stations, the azimuth and altitude of the star, Based on the inverse transformation model of total station pixel coordinates and dial coordinates, Predicting the Initial Imaging Position of a Star, At that initial image position,Setting the range of star image processing and calculating star point centroid coordinates in this range, the star image of total station can be processed locally and effectively, avoiding the whole image processing, greatly shortening the time of star point centroid extraction, improving the efficiency of star point centroid extraction, and providing technical support for rapid astronomical measurement.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a total station and a star point centroid extraction method of a star image. Background technique [0002] Astronomical surveying is one of the important technical means of space geodesy. Its observation sources are indestructible natural celestial bodies such as stars and planets. The needs of school, long-range artillery precision orientation and other aspects. The working mode of astronomical measurement is completely autonomous, with strong anti-interference ability, and it is a safe and reliable means of positioning and orientation. [0003] The astronomical measurement system based on the traditional electronic theodolite or total station is currently the main astronomical measurement equipment. It still needs to observe the stars with the naked eye to achieve precise positioning and orientation. The degree of automation is not high, the observation is...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/66G06T5/00
CPCG06T5/002G06T7/66
Inventor 詹银虎张超郑勇时春霖叶凯
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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