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A device and method for calibrating guns based on digital images

A technology of digital image and gun calibration, applied in the field of photoelectric imaging detection, can solve the problems of accidental injury to observers, low detection efficiency and large error of the gun barrel, and achieve the effect of reducing manpower input, reducing safety hazards, and improving detection accuracy.

Active Publication Date: 2021-06-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method relies on the experience of the observers, has large errors, requires the cooperation of multiple people, has low detection efficiency, and has the potential safety hazard of the gun barrel accidentally injuring the observers

Method used

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  • A device and method for calibrating guns based on digital images
  • A device and method for calibrating guns based on digital images
  • A device and method for calibrating guns based on digital images

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment proposes a kind of calibration gun device based on digital images, such as figure 1 As shown, the device includes a gauge plug 2, an image acquisition module 5 and an image processing module 6; wherein, the image acquisition module 5 is fixed on an end face of the gauge plug 2; One end of the 5 is pushed into and fixed on the gun barrel 1 out of the muzzle, and then the image acquisition module 5 is communicated with the image processing module 6; then the image information collected by the image acquisition module 5 is sent to the image processing module 6 for digital processing ; Finally, the image processing module 6 obtains the position deviation value of the gun barrel by comparing the centroid coordinates of the cross target of the two images, so as to realize intelligent gun calibration.

[0039] In this embodiment, the image acquisition module 5 adopts a CCD camera; the image processing module 6 adopts a computer with an image acquisition card. ...

Embodiment 2

[0044] Based on the above-mentioned embodiment 1, the present embodiment proposes a method for calibrating guns based on digital images, the method comprising the following steps:

[0045] Step 1. Device installation

[0046] Install and fix the gun calibration device on the gun barrel outlet, and then connect the image acquisition module and image processing module (through wired or wireless communication connection), to ensure the stability of the equipment; figure 2 shown.

[0047] Step 2: Carry out intelligent calibration

[0048] The image information is collected by the image acquisition module and sent to the image processing module for digital processing to obtain the coordinates of the centroid of the cross target; the image processing module obtains the position deviation value of the gun barrel by comparing the coordinates of the centroid of the two images of the cross target to realize intelligent Chemical school gun. specific:

[0049] Step S21, collect the i...

Embodiment 3

[0072] Utilize the device that above-mentioned embodiment 1 proposes and the method that embodiment 2 proposes to detect: gun calibration device is installed, gather image information by CCD camera and send to computer, obtain cross target and carry out centroid point coordinates (X 0 , Y 0 ); Take off the gun calibration device, and the vehicle is subjected to an environmental test. After the test is completed, return to the initial position of the vehicle, push the gun calibration device into the gun barrel mouth again, and carry out the coordinates of the centroid point of the cross target (X 1 , Y 1 ) calculation, move the barrel so that X 0 =X 1 , Y 0 =Y 1 , to realize the reset of the gun barrel; compare the centroid coordinates before and after the environmental test, and obtain the offset of the two coordinates, which is the walking distance of the gun barrel. Such as Figure 4 Schematic diagram of the centroid offset of the target crossbar shown.

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Abstract

The invention discloses a device for calibrating guns based on digital images and a method thereof. The device includes a gauge plug, an image acquisition module and an image processing module; wherein, the image acquisition module is fixed on an end surface of the gauge plug; when calibrating guns, Push the end of the gauge plug that is not equipped with the image acquisition module into and fix it on the gun barrel outlet, and then communicate the image acquisition module with the image processing module; then collect image information through the image acquisition module and send it to the image processing module for further processing. Digital processing; finally, the image processing module obtains the position deviation value of the gun barrel by comparing the centroid coordinates of the two images of the cross target before and after the environmental test, so as to realize intelligent gun calibration. The present invention utilizes the gauge plug, the image acquisition module and the image processing module to realize intelligent gun calibration without manual experience and the cooperation of multiple people; realizes automatic and digital gun calibration, greatly reduces manpower input, and reduces the safety of operators Hidden danger.

Description

technical field [0001] The invention relates to the technical field of photoelectric imaging detection, in particular to a digital image-based gun calibration device and a method thereof. Background technique [0002] As an important component of the vehicle's fire control system, the infrared thermal imaging sight is mainly responsible for target detection, tracking, and aiming. Tank vehicles will produce shocks and vibrations during driving and shooting, and the optical axis of the sight may change. Serious changes will directly affect the reliability and hit rate of the sighting system. The zero movement of the thermal imager will directly affect the accuracy of aiming at the target. Therefore, after the sight is shipped from the factory, the zero movement of the fire control system is one of the important indicators to measure the performance stability of the sight. [0003] The traditional gun calibration method is to guide the gunner to calibrate the zero position of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F41F1/00F41G1/54G01B11/00G06T7/136G06T7/194G06T7/66
CPCF41F1/00F41G1/54G01B11/002G06T7/136G06T7/194G06T7/66
Inventor 郑兴仇佳乐任煜吴景彬赵嘉学刘子骥
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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