Device and method for joint calibration of industrial binocular camera and infrared thermal imager

A technology of infrared thermal imager and binocular camera, which is applied in the fields of instruments, image analysis, image data processing, etc., and can solve problems such as high cost and complicated process

Active Publication Date: 2020-08-18
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are countless methods to calibrate industrial binocular cameras or infrared thermal imagers alone, and there are also many methods to convert the black and white checkerboard of Zhang Zhengyou calibration board into a heat source checkerboard; although the method is effective, the process is complicated and the cost is high

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  • Device and method for joint calibration of industrial binocular camera and infrared thermal imager
  • Device and method for joint calibration of industrial binocular camera and infrared thermal imager
  • Device and method for joint calibration of industrial binocular camera and infrared thermal imager

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Embodiment Construction

[0079] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0080] Such as figure 1 As shown, the present invention includes the following feature parts: 1 is a small hole, 2 is an incandescent bulb, and 3 is a lamp holder.

[0081] A device for joint calibration of an industrial binocular camera and an infrared thermal imager according to the present invention uses the inner corner point of the Zhang Zhengyou calibration plate in a standard format as the center of the circle, and opens a small hole, the radius of which is less than half of the side length of the black and white grid;

[0082] An incandescent bulb is installed in the small hole, and the base of the incandescent bulb communicates with the power supply ...

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Abstract

The invention relates to an industrial binocular camera and infrared thermal imager combined calibration device and method, and the method comprises the steps: taking an inner corner point of a ZhangZhengyou calibration plate in a standard format as a circle center, forming a small hole, and enabling the radius of the small hole to be smaller than a half of the side length of a black-white grid;incandescent bulbs are installed in the small holes, and bases of the incandescent bulbs are communicated with a power source through adjusting devices. A sensor support is erected above the Zhang Zhengyou calibration plate, an industrial binocular camera and an infrared thermal imager are installed on the sensor support, and visual angles of the industrial binocular camera and the infrared thermal imager coincide when the industrial binocular camera and the infrared thermal imager shoot calibrated devices; the invention has the advantages of simple design, simple operation and low cost, and can calibrate the two cameras at the same time.

Description

technical field [0001] The invention relates to a device and method for joint calibration of an industrial binocular camera and an infrared thermal imager, belonging to camera calibration methods. Background technique [0002] In complex terrain environments such as changing backgrounds, occlusions by terrain and objects, or in natural environments with low visibility such as rainy days, smog, and darkness, in order to obtain multi-dimensional information of the integrity, reliability, and accuracy of the target object, often The method of multi-sensor joint observation is adopted. Among them, the industrial binocular camera can not only obtain rich texture information, but also obtain the depth information of the image, while the infrared thermal imager can obtain temperature information; therefore, the joint measurement method of the industrial binocular camera and the infrared thermal imager is widely used . [0003] When the industrial binocular camera and the infrared...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/80
Inventor 殷国栋吴愿耿可可薛培林邹伟刘帅鹏
Owner SOUTHEAST UNIV
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