[Digikam-users] Area in focus

[Gilles Caulier]

We have 2 entries in bugzilla about this topic to look which area have been
focused while shot. The first deal is to read metadata where camera store
this information. This way is fast.

https://bugs.kde.org/show_bug.cgi?id=138704

There is another entry which require a different approach : analysis the
content of image to see where are the most focused pixels. This way is used
in Darktable. This way is slow of course because whole pixels images must
be parsed.

https://bugs.kde.org/show_bug.cgi?id=314022

As we have already an algorithm to detect blur image, the second point will
be easy to implement i think. For the first one, Exiv2 must be patched to
decode camera marker-notes relevant of focus point. As each camera maker
use a different approach, this will be complex. Note : these information
are stored in private Exif area and of course are not documented.

Both way can be proposed for students next summer...

Gilles Caulier

2015-10-01 10:52 GMT+02:00 Marie-Noëlle Augendre <mnaugendre at gmail.com>:

> I think darktable has something like that (I use the program, but not this
> functionality), but it works with RAW pictures only.
>
> Marie-Noëlle
>
> 2015-10-01 10:42 GMT+02:00 B. M. <b-misc at gmx.ch>:
>
>> Dear all,
>>
>> I wonder if it's possible to automatically detect (and maybe mark) the
>> area which is reasonably well in focus of an image, with digikam or maybe
>> with other tools. Any ideas?
>>
>> Thank you for your inputs.
>> B.M.
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