Linear filter and non-linear filter combined heterogeneity correction method
A nonlinear filter and non-uniformity correction technology, which is applied in instrumentation, image enhancement, computing, etc., can solve problems such as slow convergence speed and poor smoothing effect of nonlinear smoothing filter
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[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0057] Such as figure 1 As shown, the non-uniformity correction method combining linear and nonlinear filters of the present invention includes:
[0058] Step 101: Receive the infrared focal plane output image sequence frame by frame, and perform linear correction on the current image of each frame according to the current gain and offset correction parameter values of each pixel position in the image to obtain the corrected image. The correction formula is as follows:
[0059] the y ij (n)=g ij (n)x ij (n)+o ij (n)
[0060] where y ij (n) is the corrected image, x ij (n) is the focal pla...
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