[email protected] writes:
> I've a file taken with a mobile phone. The detail is execrable.
> It's important to identify a couple of faces in the file.
I don't want to intrude into whatever happened, which sounds both
personal and unpleasant, but: if this is a legal issue, talk to the
police and/or your lawyer before you do *anything* with the
information.It is surprisingly easy to make the evidence invalid by
fiddling with it yourself, in many cases.
If it isn't, um, make sure you actually want to know the answer to the
question you were asking, and good luck.
> I've asked around. The best I have is to go through the file, select a
> critical frame, download it and use The Gimp to sharpen a given face.
>
> First off, can this be done?
Sure. There is no guarantee that you will get the results you want, but
it can certainly be done. Using "The Gimp" is not the only path, BTW.
> Secondly, can it be done in one sweep for critical frame +/- 10
> frames?
It is extremely unlikely that the same point focus and sharpening with
bring out good results across a set of frames, due to motion, changes in
lighting and so forth.
You will probably also get better results with more than just sharpening
the image; adjusting contrast and colour balance, using individual
channels and other adjustments can do more to bring out the detail you
want to see — even uniform or non-uniform blurring can help, in some
cases.
> (the reason: should the sharpening not be good enough, I might be able
> to recognise a face by the way it "looks"---like the slightly blurred
> Mona Lisa of some psychological tests).
>
> Any help etc.
I strongly advise you to use, or consult, a professional in this matter,
whatever it is. Doing it yourself is unlikely to bring the satisfaction
you are looking for, and whatever the problem is, I bet that it is a
social and not a "technical" problem.
Regards,
Daniel
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