thank you for this advice. I made a quick test myself and it works as
described. The only thing that would remain, is making it truely
lossless but it's very close, as you wrote.
> Hi Rainer,
>
> there is an alternative to wavelets: Simply do a bandpass filter in the Fourier transform.
>
> With Process>FFT>Bandpass filter (suppress stripes=none, all autoscaling off) I have tried decomposing an image into three bands, 0-3, 3-40 and 40-400000 wavelength bands.
> (for a small image, 400000 is close to infinity; I think that the program does not accept infinity here).
>
> Then I have added these three contributions. Apart from a constant offset (which means one should to do the calculations on float images), the result was very close to the original (0.3% of the maximum pixel value or so).
>
> Michael
> ________________________________________________________________
> On Nov 7, 2013, at 13:54, Rainer M. Engel wrote:
>
>> I'm searching for something like this but for ImageJ.
>>
http://registry.gimp.org/node/11742>>
>> Thanks for your help.
>>
>> Regards,
>> Rainer
>>
>> --
>> Rainer M. Engel, Dipl. Digital Artist
>> scientific|Media GbR
>> Pichelsdorfer Str. 143
>> 13595 Berlin
>>
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>> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>
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