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| bio | website | |
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| location | ||
| age | ||
| visits | member for | 5 months |
| seen | 8 hours ago | |
| stats | profile views | 16 |
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Jun 15 |
awarded | Nice Question |
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Jun 15 |
awarded | Promoter |
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Jun 14 |
comment |
Digital filter of image in Fourier space @AndrewJaffe simply because I don't know how to do it in practice :)) |
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Jun 14 |
comment |
Digital filter of image in Fourier space In case of confusion: I am in fact only interested in the last image (the one corresponding to the raw data). |
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Jun 14 |
comment |
Digital filter of image in Fourier space nice! is there any way to do the reverse, i.e. a kind of low-pass filter that gets rid of these small waves? |
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Jun 14 |
comment |
Digital filter of image in Fourier space @nikie, the FFT in my question corresponds to the image just above it, which is for a homogeneous system. The problem I am interested in, which is the last image of my question, being inhomogeneous will of course have a more complicated FFT, but one can still see circles (using exponential scale). |
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Jun 14 |
comment |
Digital filter of image in Fourier space @nikie, i uploaded a better image and the raw data corresponding to it is now on Pastebin. |
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Jun 14 |
revised |
Digital filter of image in Fourier space clarified question |
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Jun 14 |
revised |
Digital filter of image in Fourier space clarified question, added image |
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Jun 13 |
revised |
Digital filter of image in Fourier space added 820 characters in body; edited title |
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Jun 13 |
comment |
Digital filter of image in Fourier space in fact, i would like to upload the raw data, but its a large matrix and i'm not sure how to do that |
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Jun 13 |
awarded | Cleanup |
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Jun 13 |
revised |
Digital filter of image in Fourier space rolled back to a previous revision |
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Jun 13 |
revised |
Digital filter of image in Fourier space deleted 31 characters in body |
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Jun 13 |
comment |
Digital filter of image in Fourier space great work @nikie. one thing remains - isn't there some way of selecting just the waves which correspond to a certain ring in the Fourier transformed image? say something like a band pass filter which selects one ring? because i know that the close-spaced waves on the left of the center correspond to one particular ring only (namely the bright ring on the left of the 2D fft plot). |
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Jun 13 |
awarded | Commentator |
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Jun 13 |
revised |
Digital filter of image in Fourier space clarified question |
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Jun 13 |
asked | Digital filter of image in Fourier space |
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May 26 |
asked | Numerical solution of Schrödinger-type equation in Mathematica |
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May 19 |
comment |
Overloading conjugate operator for a particular function Ok @gpap, I followed your advice, hope you don't mind! :) |
