similar image search not always working as expected

[Daniel Bauer]

I have sent you a link to a sample...

Am 06.05.25 um 12:27 schrieb Maik Qualmann:
> I think we have a similar bug report; I'll have to look for it this evening.
> In that image set, one image was slightly cropped from the edges and the
> colors were modified. They were also barely recognized as similar. If you don't
> mind, send me an image set.
> 
> Maik
> 
> Am Dienstag, 6. Mai 2025, 11:52:43 Mitteleuropäische Sommerzeit schrieb Daniel
> Bauer:
>> Hello,
>>
>> Sometimes similar image search does not show all possible results, even
>> though I use similarity 55 - 100%. It does find it though with
>> similarity set to 40%, but then of course it also finds a lot of false
>> positives.
>>
>> Besides of file format and size the two images are identical, actually
>> the image used for the search is just a smaller .jpg-version made from
>> the .png original with a small added watermark.
>>
>> Over this night I let digikam rebuild all "fingerprints", but even after
>> a restart of dk if doesn't find those images when set to 50 or 55%.
>>
>> Is there a problem with .png files? (although it happens only with few
>> images, other .png's of other images are found)
>> Can I better the results with any trick?
>>
>> I can provide access to sample images in private, but those are nudes...
>>
>> Kind regards
>>
>> Daniel
>>
>> (I often use this function to find the original file or a published
>> version without having to go through the albums with countless photos,
>> even more when I forgot the name of a model :-) )
> 
> 
> 
> 

-- 
Daniel Bauer photographer Basel Málaga
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