similar image search not always working as expected

[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 :-) )