[digiKam-users] fuzzy search for duplicates - how to use?

[Uwe Haider]

Thanks again Mario,

again a step further.... your explanations are very good, the use of the 
fuzzy search tool is not so trivial.

My problem is not the search for duplicate images. Seems I search for 
duplicate albums....

The duplicated albums are spread all over my collection (failed 
backup-routine). I mark all duplicated albums in the collection (all 
from 2010) search duplicates, delete the duplicate-images in the wrong 
positioned albums, move the single-images in the right places and delete 
the empty wrong positioned albums. That's the plan...

Current status: 67 albums are marked, two times duplicate search & 
deleting the found two duplicates for each image -> next search again 
found ~ 70 duplicated files? This time only one duplicate for each 
image....

What settings for the search will be best? Is there a way to find all 
duplicate images in the marked albums in the first search? Or must I 
rebuild fingerprints after every search & delete? Or must I perform a 
database cleaning after every search & delete?

Is the fingerprints of an image with tags/geotags/faces equal to the 
fingerprint of the same image without any tags?

btw:
marking albums in the album tree to select them for the search is a bit 
curios to me: I mark a first level album for the search and the second 
level albums in this first level album are not included for the 
search....? The search run was very fast :-)

Same behaviour in the tag tree. bug or feature? Or is there a trick like 
Strg + mouse or something like that?

best regards
Uwe
Am 09.01.19 um 09:31 schrieb Mario Frank:
> Hi Uwe,
> 
> You're welcome. I will answer inline again.
> 
> Am 08.01.19 um 22:48 schrieb Uwe Haider:
>> Many thanks Mario,
>>
>> for your explanations.
>>
>> Am 08.01.19 um 10:23 schrieb Mario Frank:
>> [...]
>>
>> I don't understand the part with the "reference album":
>> (please have a look inline)
>>
>>>>
>>>> Next pull down restriction "none" "restrict to reference album" /
>>>> "exclude reference album" ??
>>>>
>>>> What is the "reference Album" the first or the oldest album in the
>>>> album list? Can I select a reference album?
>>> This pull down menu gives you the possibility to restrict the images
>>> with which an image is compared.
>>> If you have an image in Album1 and one image in Album 2.
>>> If you choose "none", the images are compared.
>>> If you choose "restrict to reference album", the images are not
>>> compared.
>>
>> Seems to be senseless for me????
> The example was too trivial to explain the functionality well, I think.
> 
> Okay: Consider you select Album 1 and Album 2.
> In Album 1, you have two images, Image 1 and Image 2.
> Image 2 is a nearly-duplicate of Image 1 with 90 % similarity (e.g. you
> made series photos).
> In Album 2, you have a duplicate of Image 1, let's call it Image 3.
> 
> When selecting "none", the result will be Image 1, Image 2 and Image 3
> When selecting "restrict to reference album", the result will be Image 1
> and Image 2.
> This option is good if you have huge albums with potentially many
> duplicates.
> 
> When selecting "exclude reference album", the result will be Image 1 and
> Image 3.
> This option is good if you do not care about duplicates in the same album.
> 
>>
>>> If you choose "exclude reference album", the images are compared.
>>
>> Seems to function as "none"???
>>
>>>
>>> To make it brief, the "reference Album" is the album of the image for
>>> which the duplicates are searched.
>>
>> I don't select an image to look for its duplicates... I mark several
>> albums to compare them. My goal is to delete all duplicate images,move
>> the different images in the correct album and delete the empty
>> "leftovers-albums". How is the reference album chosen by digikam? Is
>> it the first marked album?
> 
> You are right, you do not select images.
> But If you select an album, a duplicates search is done for every
> (reference) image in this album.
> and for each of these duplicates searches, the reference album is the
> album in which
> the image is located.
> So, in the example above, the reference album of Image 1 and Image 2 is
> Album 1
> and the reference album of Image 3 is Album 2.
>>
>>
>>>> In the results list some pictures in several albums are marked as
>>>> reference. But I can't see why? There are albums in different album
>>>> trees marked as reference....
>>> Can you describe this more precise? I am not sure I understand what you
>>> mean.
>>
>> OK, my english is a leftover from school... from the las centura :-) I
>> try my very best:
> That's okay. :)
>>
>> I have chosen 67 albums from 2 different album trees and searched the
>> duplicates. The result list is ordered by date and separated by album.
>>
>> For the first xxx images the there were 3 albums with duplicates,
>> images in the second album are marked as "reference".
>>
>> Suddenly... >xxx+1 image the reference image is located in the first
>> album. No new search, just a chance in the ordering of the result list.
>>
>> I want to clean my album structure so I decide to delete the albums in
>> the "wrong" position in my trees. The reference is not important for
>> this decision. But I like to understand how it works...
> If you chose those 67 albums, and get duplicates, you get a list of
> duplicates results (result list) in the left part of the panel
> with a thumbnail, the filename of the image, the count of duplicates and
> the average similatrity.
> Each of these duplicates results has one "reference image" (or in German
> "Referenzbild") which is the one
> with the filename given in the left panel.
> 
> If you click on a duplicates result, you get the duplicates and the
> result image (just for comparison) in the right panel.
> The right panel is usually organised by album (but you can change this),
> and you should have one and only one
> reference image in the right panel.
> 
> The right panel is not sorted by the reference image. The sorting of the
> right panel depends on the view configuration you have chosen.
> If the panel shall be separated by albums, you get the albums in
> lexicographical order.
> The album content itself is sorted by the option you chose in view->sort
> entries (in German "Einträge sortieren").
> So the reference image can be shown in any album if you separate the
> view by albums.
> 
> I hope I got you right. Otherwise, can you send some screenshots?
> 
>>
>>
> 
> 

-- 
Uwe Haider
uwe.haider at gmx.net