How can I clear the noise from a picture

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geometry geometry
geometry geometry il 30 Giu 2018
Commentato: Image Analyst il 1 Lug 2018
Assume that a picture is multiplied by the noise sin(Ax+By). how can I clear the noise using deconvolution?

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Image Analyst
Image Analyst il 30 Giu 2018
The easiest thing to to not use convolution and just divide by the known pattern. Any reason why you're not doing that?
Otherwise you can find the low frequency spikes in the Fourier domain and erase them. See attached demos.

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