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http://bugs.kde.org/show_bug.cgi?id=128333
------- Additional Comments From arnd.baecker web de 2007-09-12 08:11 -------
Roger,
I think this is very interesting, and running a search
for "detect blur" gives many hits.
For example there is a paper "Blur Detection for Digital Images Using Wavelet Transform" which sounds interesting as it will output a single
number ("blur extent"). However, I am not sure whether the given examples
really correspond to "real world" situations.
So, before anything interesting like this is integrated into digikam,
some research is needed, in my opinion.
We would need a stand-alone implementation for one (better: a bunch) of
the methods (including the one you proposed, of course) and
see how well they perform on real world images.
To test such code, it might be better to prototype
it eg. in python. Once could think of using the
Python Image Library (
http://www.pythonware.com/products/pil/)
(together with numpy) or VIPS (
http://www.vips.ecs.soton.ac.uk/index.php?title=VIPS)
which is also scriptable using python.
Of course one can do the stuff straight in C++ ... ;-)
Do you think you could maybe have a try with that?
(For the python/PIL/numpy I could give you some more pointers, if needed).
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