Long-distance target object measuring method and system based on refrigeration medium-wave thermal imaging rotary table

Abstract

The invention provides a long-distance target object measuring method based on a refrigeration medium wave thermal imaging rotary table. According to the method, a refrigeration medium-wave thermal imaging sensor is used for obtaining a thermal imaging image of a long-distance target object and carrying out preprocessing to obtain a high-quality image, a laser range finder is used for carrying outtarget object range finding, the height, width and relative coordinates of the target object are calculated through the thermal imaging image, turntable parameters and range finding values, and target object measurement is achieved. According to the invention, under the condition of low visibility, measurement with higher sensitivity, higher precision and smaller error can be carried out on a long-distance target object.

Description

Technical field [0001] The invention relates to the technical field of long-distance target measurement, in particular to a measurement method and system based on refrigerated medium-wave thermal imaging, turntable and laser ranging. Background technique [0002] Target measurement is a problem often encountered in the field of long-distance and large-scale security protection, especially the measurement of long-distance targets under low visibility conditions has always been a difficult point. [0003] Visual measurement is the use of a camera to take an image of the measured target, and the computer quickly extracts the characteristic signal of the target image. After analysis and calculation, the width, height, relative coordinates and other parameters of the measured target are obtained. Compared with other measurement methods, visual ranging is a passive measurement, that is, it does not need to transmit any signal to the target, just take the image of the target. The image o...

AI Technical Summary

Problems solved by technology

The binocular and multi-eye measurement accuracy is high, but the system is more responsible, and there are special constraints, such as binocular baseline accuracy requires extremely high stability of the measurement platform

Monocular measurement mainly uses scene feature information for calculation and measurement, which has the advantages of simple equipment and low cost, but traditional monocular measurement cannot meet the requirements of long-distance measurement

[0005] The disadvantages of the existing technology are: first, it is generally used for short-distance measurement, and is not suitable for long-distance and large-scale target measurement; second, outdoors, it is affected by various weather conditions, especially in low visibility conditions , the technology will fail; third, the accuracy of distance and relative coordinates is poor

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