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Bilateral total variation regularization correction method for non-uniform response of IRFPA detector

A bilateral full variation and detector technology, applied in radiation pyrometry, instruments, measuring devices, etc., can solve the problem of poor protection of artifacts, real scene structure information, etc.

Inactive Publication Date: 2014-06-18
XIDIAN UNIV
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Problems solved by technology

However, in the case of severe non-uniform response, this method fails to solve the artifact phenomenon well and does not protect the structural information of the real scene well.

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  • Bilateral total variation regularization correction method for non-uniform response of IRFPA detector
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  • Bilateral total variation regularization correction method for non-uniform response of IRFPA detector

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Embodiment Construction

[0036] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0037] refer to figure 1 , the bilateral full variation regularization correction method of the non-uniform response of the IRFPA detector of the present invention, the bilateral full variation regularization is introduced into the correction parameter regression estimation, specifically comprising the following steps:

[0038] (1) The scene radiation observation value Y at time t is collected by the IRFPA detector t .

[0039] (2), using the estimated value of the current gain correction parameter and an estimate of the bias correction parameter Calculate the current scene radiation observation value Y t Correction value of

[0040] Formula 1).

[0041] (3) Use the neighborhood average method to calculate the current scene correction value expected value T t :

[0042] T t ...

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Abstract

The invention discloses a bilateral total variation regularization correction method for the non-uniform response of an IRFPA detector. The method is characterized in that according to requirements of correction output of the non-uniform response of the IRFPA detector for artifact inhibition and detail maintaining, a bilateral total variation regularization term is led into an energy functional in cooperation with a correction parameter regression estimation method, diffusion properties of the bilateral total variation anisotropy are fully utilized, the artifact effect of response output after correction is effectively reduced, and detail information in an original scene is maintained better, so the temperature resolution of the IRFPA detector is effectively promoted.

Description

technical field [0001] The invention relates to a method for correcting the non-uniformity of an IRFPA detector, in particular to a method for correcting the non-uniformity of an IRFPA detector which combines bilateral full variation regularization and correction parameter regression estimation, and belongs to the technical field of digital signal processing. Background technique [0002] The fixed pattern noise caused by the uneven response of the infrared focal plane array detector (IRFPA detector for short) has seriously affected the signal-to-noise ratio, temperature resolution and spatial resolution of the IRFPA imaging system. The most fundamental way to eliminate fixed pattern noise is to use new materials and processes in the detector manufacturing process to improve the consistency of the response of each detector element. However, the development of new materials and processes requires a large amount of investment and long-term research. It is difficult to meet the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G06T5/00
Inventor 赖睿肖鹤玲张剑贤杨银堂周慧鑫秦翰林王炳健
Owner XIDIAN UNIV
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