[Digikam-users] Two search questions

Gandalf Lechner gandalf.lechner at univie.ac.at
Sat Aug 2 23:32:30 BST 2008

Am Samstag, 2. August 2008 18:13:53 schrieb Marcel Wiesweg:
> > > Hi all,
> > >
> > > I have to simple questions regarding search tools in digikam 0.10-svn:
> > >
> > > 1) Is the duplicates search implemented already? I clicked "find
> > > duplicates" in the corresponding tool, using on a test set containing
> > > identical images, but it returned nothing. (Fingerprints were updated
> > > before.)
> >
> > Perhaps you don't have duplicates on your collection.
> >
> > Can you see any messages from the console ?
> Gandalf, when you click "Find duplicates" you should get a number of
> messages on the console reading "Duplicates with id and score:" followed by
> image ids and their similarity in percents.

Hi, and thanks for your answers. Here are some more comments/questions about 
the fuzzy search tools.

To find duplicates, I selected an image and clicked tools->find duplicates from 
the menu. At first, nothing appeared in the duplicates sidebar, and also 
nothing in the main window. There were also no messages in the console. (Only 
"style reset requested" all the time.) At that point I thought duplicate 
search was not working at the moment. However, when I shut down digikam, and 
started it again, all duplicates were listed in the duplicates sidebar. So the 
tool seems to be working after all, and maybe my initial problems were due to 
changing digikam databases and settings. I will do some more checking.

Regarding the similar items search, I was a bit surprised to find it not to be 
symmetric, i.e. if image A is similar to B then B is not necessarily similar 
to A. Is this intended? And just out of curiosity: Is "find duplicates" just 
"find similar" with 100% threshold, or is there some more difference?

Finally, regarding the draw sketch search, I found that it often returns 
matches which are not even remotely similar to the sketch. Apparantly, setting 
the items count to X forces the tool to return precisely X hits in any 
situation, if there are similar items or not. Moreover, I am not sure about 
the order of the matching pictures (didn't check thoroughly) - are they 
ordered by same measure of closeness to the sketch or are they always ordered 
by album? The former possibility would be better, of course.

Best regards,

> Marcel
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