Display and calibration method for chromometry-based temperature measurement system

A technology of colorimetric temperature measurement and calibration method, which is applied in the field of infrared temperature measurement, to achieve the effects of reducing the output data bandwidth, being portable, and implementing a simple process

Active Publication Date: 2015-11-11
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0010] In order to overcome the limitations of the current focal plane colorimetric temperature measurement system display and calibration method, the present invention proposes a new focal plane colorimetric temperature measurement system display and calibration method

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  • Display and calibration method for chromometry-based temperature measurement system
  • Display and calibration method for chromometry-based temperature measurement system
  • Display and calibration method for chromometry-based temperature measurement system

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Embodiment Construction

[0050] The overall flow chart of the colorimetric temperature measurement system in the present invention is as follows image 3 As shown, it specifically includes image preprocessing, image registration, information fusion, and temperature calibration. Realize the schematic diagram as Figure 4 As shown, the specific implementation of each step is as follows:

[0051] 1. Image preprocessing

[0052] Ideally, when the infrared focal plane detector is irradiated by uniform light, the output signal amplitude of each pixel should be exactly the same. In fact, due to the inhomogeneity of the semiconductor material used to make the device, mask errors, defects, processes and other factors, the output amplitude will appear uneven, and at the same time there will be some bright or dark spots on the image, which are blind elements ( Also known as invalid elements). Non-uniformity will vary with the temperature of the detector's operating environment. Due to the existence of these...

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Abstract

The invention relates to a display and calibration method for a chromometry-based temperature measurement system, which comprises the steps of 1) respectively pre-processing a transmission light path image acquired by a transmission light path detector and a reflection light path image acquired by a reflection light path detector; 2) registering the pre-processed images and forming a unique corresponding point in the reflection light path image that corresponds to each point in the transmission light path image, so as to enable the two corresponding points of each set to correspond to the same physical location and complete the image registration; 3) figuring out the ratio of the gray levels of the two corresponding points of each set for all pixels of the two registered images, and corresponding the above ratio of the gray levels to a suitable display grayscale based on the image gray level mapping algorithm so as to form images after the information fusion process. The above method overcomes the limitations that the common ratios and the temperature calibration of a conventional focal-plane chromometry-based temperature measurement system, and images formed through a transmission light path and images formed through reflection light path are respectively displayed, can be overcome. Meanwhile, the method is simple in implementation process and good in application and promotion value.

Description

technical field [0001] The invention belongs to the field of infrared temperature measurement, in particular to a display and calibration method for an infrared focal plane colorimetric temperature measurement system. Background technique [0002] Temperature measurement plays an important role in national defense, military affairs, scientific experiments, and industrial and agricultural production. Infrared temperature measurement technology has the advantages of not destroying the temperature field of the measured object, fast response, high sensitivity, and wide temperature measurement range. It is widely used in aerospace, materials, energy, metallurgy and other fields. At present, various infrared temperature measurement methods have appeared at home and abroad, and these methods can be roughly divided into: full radiation temperature measurement method, brightness temperature measurement method, and colorimetric temperature measurement method. The accuracy of the tota...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00
Inventor 刘伟曹剑中段程鹏陈耀弘谢庆胜易波陈卫宁范哲源
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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