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Distance measuring device and method based on large-field shooting and image processing

An image processing and distance measuring device technology, applied in the field of photoelectric detection, can solve the problems of difficult parameter calculation, easily lost targets, small data volume, etc., and achieve the effect of clear image, fast calculation speed and small data volume

Active Publication Date: 2010-10-13
XIAN TIANHE DEFENCE TECH
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Problems solved by technology

[0008] In order to overcome the shortcomings of the existing technology, which is easy to lose targets and difficult to calculate parameters, the present invention provides a ranging method based on large field of view photography and image processing. The large field of view makes it easier to find the observed target, and it is easier to determine whether it is the same target. In order to be accurate, the selection of feature reference points after image mosaic makes the data volume of the calculation target smaller and the calculation speed faster

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  • Distance measuring device and method based on large-field shooting and image processing
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  • Distance measuring device and method based on large-field shooting and image processing

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Embodiment Construction

[0029] The invention includes two detection stations, which are Figure 5 The two stations A and B in the double-station intersection method, and each detection station includes detection subsystem, image processing subsystem, data processing control subsystem, turntable subsystem and communication subsystem, the composition and working principle diagram of each station See figure 1 .

[0030] The detection subsystem uses a multi-spectral photoelectric array, which consists of a photoelectric array (2×3) unit, a telephoto unit and an infrared thermal imager measurement unit, and is equipped with a multi-spectral camera control unit.

[0031] (1) The photoelectric array (2×3) unit uses 6 multi-spectral cameras arranged in parallel in 2 columns and 3 rows. Each multi-spectral camera covers visible light and mid-wave infrared spectrum, that is, light waves from 400nm to 1200nm. The field of view of the spectral camera is greater than 2.7° (azimuth) × 3.7° (pitch), and the entir...

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Abstract

The invention belongs to the technical field of photoelectric detection, in particular to a distance measuring device and a method thereof. The method comprises the following steps of: assembling a large field by using a 2*3 array of multispectral cameras, obtaining background images and labeling characteristic reference points by using real-time image arrangement, and calculating an object distance by using an image convergence shooting algorithm. Because the invention adopts a large-field angle, observed objects are more easily found, and judging whether the observed objects are the same one is more accurate; and because the characteristic reference points are selected after image arrangement, the data volume of object calculation is smaller, and calculation is faster.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, in particular to a distance measuring device and a method thereof. Background technique [0002] The fields of key air defense, frontier and coastal defense monitoring, and battlefield real-time monitoring all involve the measurement of target parameters in the surveillance area, including measuring the distance, azimuth, and elevation angle of the target. Among them, ranging is a key issue. The commonly used methods for distance measurement include laser rangefinder distance measurement method, pitch angle distance measurement method, optical lens focusing distance measurement method, dual-station intersection distance measurement method and stereo image method, etc. [0003] The laser rangefinder ranging method uses laser beams to irradiate the selected target with laser light, and calculates the distance of the target through the return time of the light and the speed of the l...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C3/00
Inventor 贺增林
Owner XIAN TIANHE DEFENCE TECH
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