Infrared focal plane array blind pixel detection method and device

Abstract

The invention relates to an infrared focal plane array blind pixel detection method and device so as to solve the problem of poor stability of a conventional blind pixel detection method. The method, when judging blind pixels, utilizes the feature that the grey level value of an infrared image based on an uniform background is similar to normal distribution to carry out windowing and calculation with each pixel being a center. The accuracy rate of the scheme is poor; and through research, the poor accuracy rate is found to be caused by noise interference. Therefore, on the basis of the above, a frame of detector original image is collected each time, and statistics judgment is carried out on calculation results in a time domain range, and wrong blind pixel detection caused by noise is effectively prevented through setting evidence threshold value, thereby improving detection accuracy.

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 ...

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