Airborne infrared degradation image correction method
A technology of degraded image and correction method, applied in the field of aerospace remote sensing, can solve the problems of image blur, ringing phenomenon amplification, etc., to achieve the effect of improving reliability and enhancing image quality
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Embodiment 1
[0055] A method for correcting an airborne infrared degraded image, the method comprising the following steps:
[0056] (1) Fig. 2 (a) is the ripple noise of the airborne infrared degraded image provided by Embodiment 1 of the present invention; Fig. 2 (b) is the histogram projection of the airborne infrared degraded image provided by Embodiment 1 of the present invention Ripple noise; the size of the airborne infrared degraded image is 256*256, and the band noise in the airborne infrared degraded image is in the row direction, so the airborne infrared degraded image is extracted column by column;
[0057] (2) Extract the gray value of a column of pixels of the airborne infrared degraded image to form a one-dimensional signal f(x), x=0, 1, ..., N-1, such as image 3 As shown, the length is 256; perform discrete Fourier transform on f to obtain the frequency data sequence F,
[0058]
[0059] Among them, u is the frequency variable; the frequency corresponding to the nth po...
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