Infrared focal plane array blind pixel detection method based on integral time adjustment

A technology of integration time and detection method, applied in the field of signal detection and processing, can solve the problems of high cost and depend on price, and achieve the effect of simple and convenient operation and accurate detection.

Active Publication Date: 2012-04-11
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0008] The present invention aims at the deficiency that the existing blind element detection method must rely on expensive standard black body radiation, and needs a fixed darkroom to perform blind element detection, and proposes an infrared focal plane array blind element detection method based on integration time adjustment

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  • Infrared focal plane array blind pixel detection method based on integral time adjustment
  • Infrared focal plane array blind pixel detection method based on integral time adjustment
  • Infrared focal plane array blind pixel detection method based on integral time adjustment

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Embodiment Construction

[0019] The implementation process of the present invention is specifically described below with reference to the accompanying drawings and examples, figure 1 It is a flow chart of the blind element detection and compensation method of the present invention, which specifically includes the following steps: recording the detection unit response output values ​​under different integration times, blind element detection and blind element compensation.

[0020] The implementation process of the IRFPA blind element detection method based on integration time adjustment is as follows:

[0021] Record the response output value of the detection unit IRFPA under different integration times.

[0022] Determine the integration time point for IRFPA. According to the range of integration time variation of the IRFPA readout circuit, the step size of the integration time ( ) from the minimum integration time ( ) (the integration time can be the minimum integration time given in the detecto...

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Abstract

The invention requests to protect an infrared focal plane array blind pixel detection method based on integral time adjustment, belongs to the technical field of signal detection. Aiming at the condition limitation that the traditional blind pixel detection method based on a standard black body radiation source depends on an expensive black body and a fixed dark room and the blind pixel detectioncannot be performed as required anytime anywhere, the invention provides a method of flexibly and conveniently adjusting a response output value of the infrared focal plane array in different integral time through a CPLD (complex programmable logic device) programming, computing a response rate of each detection unit according to the response output value and detecting the blind pixel according to the blind pixel definition. The detection unit response output value, the blind pixel detection and the blink pixel compensation in different integral time are recorded. The method provided by the invention has a simple implementation process, and has application and spread value in the IRFPA (infrared focal plane array) blind pixel detection.

Description

technical field [0001] The invention relates to the technical field of signal detection and processing, in particular to an infrared focal plane array blind element detection and compensation method. Background technique [0002] Infrared focal plane array imaging system has become the development trend of infrared imaging technology due to its advantages of high sensitivity, small size, compact structure, long range, good anti-interference, strong ability to penetrate smoke, and can work all-weather and all-day. , and the staring infrared focal plane array has become the mainstream detection device for the development of future infrared thermal imaging systems. However, due to the influence of materials and processing technology, there are generally differences in response among the detection units of the infrared focal plane array (IRFPA). When the external thermal radiation changes, the response output of a certain detection unit remains unchanged or changes. slow, that ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/02
Inventor 代少升肖义黄俊
Owner CHONGQING UNIV OF POSTS & TELECOMM
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