SwishSwisher

2015 年からアクティブ

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質問

Fast Convex Optimizer for for images (compressed sensing)?
I have the following cost function minimize ||x||1, subject to || A(x) - b||2 < epsilon Where A is some...

11年弱前 | 0 件の回答 | 0

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質問

I would like to rewrite fftshift(fft2(fftshift(x)))) as F*x*F.' but how do I handle the fftshifts?
I would like to rewrite fftshift(fft2(fftshift(x)))) as F*x*F.' (where F = dftmtx(N) and N is the size of x), but how do I handl...

11年弱前 | 1 件の回答 | 0

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質問

How do I solve min ||y - A(x)||2 efficiently when A(x) is function (fourier ish) and x is large?
How do I solve for min ||y - A(x)||2 efficiently when A(x) is function? A(x) is a fourier transform plus a few other little thin...

11年弱前 | 2 件の回答 | 0

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