Blind element detection method and device of infrared focal plane array

A technology of infrared focal plane and detection method, applied in measuring devices, radiation pyrometry, optical radiation measurement, etc., can solve problems such as poor stability, achieve low storage overhead, ensure fast implementation, and simple operation
CN104330164BActive Publication Date: 2018-03-23凯迈(洛阳)测控有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
凯迈(洛阳)测控有限公司
Publication Date
2018-03-23

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Abstract

The invention relates to a blind element detection method and device of an infrared focal plane array, which is used to solve the problem of poor stability of the existing blind element detection method. When judging the blind pixels, the present invention utilizes the characteristic that the gray value of the infrared image based on the uniform background is close to the normal distribution, adds a window and calculates with the pixel as the center. The accuracy rate of this scheme is poor. Through research, we found that this is caused by noise interference. Therefore, on this basis, one frame of the original image of the detector is collected each time, and the calculation results are statistically judged in the time domain. By setting the evidence threshold, the false blind detection caused by noise can be effectively avoided, and the detection accuracy can be improved. .
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Description

technical field

[0001] The invention relates to a blind element detection method and device of an infrared focal plane array. Background technique

[0002] Affected by factors such as materials and manufacturing processes at the present stage, invalid pixels generally exist in infrared focal plane array detectors, and these invalid pixels are also called blind pixels. If no corresponding processing is performed during imaging, blind pixels will cause bright or dark spots to appear in the corresponding positions of the infrared image, which will seriously affect the quality of infrared imaging. Therefore, compensation for blind pixels is not possible in infrared imaging. a missing link. However, the premise and foundation of blind pixel compensation is to be able to detect blind pixels effectively. Therefore, an efficient blind pixel detection method is of great significance for improving the quality of infrared imaging.

[0003] At present, it is a common method to detect ...

Claims

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