Nonuniform correction method for thermal infrared imager

An infrared thermal imager, non-uniformity correction technology, applied in the field of infrared thermal imager, can solve the problem that the lens non-uniformity cannot be eliminated
CN103528690AActive Publication Date: 2014-01-22UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2014-01-22

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Abstract

The embodiment of the invention discloses a nonuniform correction method for a thermal infrared imager. The nonuniform correction method for the thermal infrared imager comprises the following steps: measuring the gray value of the infrared image of a black body and the gray value of the infrared image of a catch at at least two temperatures to obtain the function relationship between a black body image gray value and a catch image gray value; when the catch is used for carrying out nonuniform correction on the thermal infrared imager, converting the infrared image of the catch into a conversion image which satisfies the function relationship; and carrying out nonuniform correction by the conversion image. Therefore, the nonuniform correction comprises the nonuniform correction caused to a lens, and nonuniformity introduced in by the lens can be reduced or compensated together so as to improve the imaging quality of the thermal infrared imager.
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Description

technical field

[0001] The invention relates to the technical field of infrared thermal imaging cameras, in particular to a non-uniform correction method for infrared thermal imaging cameras. Background technique

[0002] Research on uncooled infrared focal plane detectors was established under the needs of national defense applications. At present, it has a wide range of applications and development prospects in industry, medical treatment, military affairs and other aspects. In recent years, there have been many studies on thermal imaging systems based on uncooled infrared focal plane detectors, and they have been gradually improved and matured.

[0003] Non-uniformity is an important index to measure the performance of the detector and affect the imaging effect. In order to improve the imaging quality, it is necessary to correct the non-uniformity. The general non-uniformity correction method is only for the detector. Other factors affecting non-uniformity may be intr...

Claims

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