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Adaptive non-uniform correcting method for stare infrared focal plane detector

A non-uniformity correction, infrared focal plane technology, applied in the direction of testing optical properties, radiation pyrometry, instruments, etc., to achieve the effect of improving image quality stability, enhancing image quality, and solving periodic calibration problems

Inactive Publication Date: 2006-08-02
KUNMING INST OF PHYSICS
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Problems solved by technology

[0005] The present invention aims at the defect that calibration working parameters in the prior art need to be periodically calibrated under different working environments, and proposes a brand new technical solution and implementation theory, no need to provide a reference blackbody in field use, and solves the problem through adaptive adjustment of parameters To overcome this contradiction and effectively enhance the image quality, there is no special requirement for the detector, and the application conditions are more extensive

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  • Adaptive non-uniform correcting method for stare infrared focal plane detector
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Embodiment Construction

[0056] Further description in conjunction with accompanying drawings, such as figure 1 Shown: First, the entire system is placed in a temperature-controllable box, and the blackbody equivalent temperature of the blackbody radiation source can be changed. The infrared radiation emitted by the black body radiation source reaches the infrared staring focal plane detector through the infrared optical system, uses the detector working temperature acquisition device to measure the detector working temperature, and uses the signal acquisition device to collect the infrared staring focal plane detector at different working temperature points Response under low-temperature uniform blackbody radiation and high-temperature uniform blackbody radiation and store the data in the data storage device. The data processing device makes correction parameters according to the working temperature obtained by the acquisition device and the response data of the infrared staring focal plane detector a...

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Abstract

The present invention relates to a staring infrared focal plane detector adaptive non-uniformity correction method. It is characterized by that it uses the parameters of three fields of environmental temperature, prestored several parameter matrixes and image matrix obtained by detector as calculation basis of compensation algorithm, makes the preset correction parameters under the different working conditions and image matrix actually collected by detector undergo the process of algorithm iteration and utilizes the calculated result to adaptively correct current correction parameter matrix of detector.

Description

1. Technical field [0001] The invention relates to a non-uniformity correction and performance optimization method and a related device for a staring infrared focal plane thermal imager, and is a technology mainly applied to a staring infrared focal plane thermal imager. 2. Background technology [0002] Infrared staring focal plane detectors have fixed non-uniform noise due to the manufacturing process. The non-uniform noise is manifested as fixed irregular light and dark shading on the image. It has strong interference, and if the non-uniformity correction is not performed in the later stage, it may even cause the infrared system to fail to work normally. At the same time, the infrared staring focal plane detector also has the characteristic that the characteristic parameters drift rapidly with the working temperature. In order to solve the image degradation caused by the parameter drift of the infrared staring focal plane detector, the general solution to this problem is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/02G01M11/02H01L31/00
Inventor 刘传明吴诚苏俊波苏兰陈吕吉
Owner KUNMING INST OF PHYSICS
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