https://bugs.kde.org/show_bug.cgi?id=369051
Bug ID: 369051
Summary: Too low similarity threshold in fuzzy/duplicate search
bloats the results with potentially unwished
high-similarity results
Product: digikam
Version: 5.1.0
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Severity: wishlist
Priority: NOR
Component: Searches-Fuzzy
Assignee: digikam-de...@kde.org
Reporter: mario.fr...@uni-potsdam.de
When having many pictures, including variants of one picture with different
quality, e.g. due to resizing, conversion and Collage creation, the
lower-quality pictures may be found only with low similarity threshold (e.g. 45
%). But the result set will contain all pictures with a similarity between 45 %
and 100 %. This can make the search for low-quality variants frustrating.
Having the possibility to specify the maximum similarity may solve the problem.
Reproducible: Always
Steps to Reproduce:
1.Have many series pictures you want to keep and some lower-quality variants
you want to get rid off.
2. Start a duplicate search with, let's say 40 %
Actual Results:
You will get all pictures with a similarity above 40 %
Expected Results:
It is designed to do that. But having an option to specify a maximum similarity
could be more convenient.
I implemented and tested that. Also, I can provide a patch file against the
master branch.
Here is the local commit message describing the implementation:
"Extended the findduplicatesview and fuzzysearchview with an
additional QSpinBox which denotes the maximum similarity. The new QSpinBox
has a minimum value that is the current value of the minimal similarity
threshold. When the minimum threshold is altered, the range of the new
QSpinBox is updated. If the minimum threshold is increased beyond the current
value of the new QSpinBox, the value of the new QSpinBox is increased
automatically. In the fuzzysearchview, altering the maximum similarity also
triggers the reuild of the similar images album. The extension can be highly
valuable if you knowingly want to ignore almost identical images but want to
find images that have a similarity of, let's say 50-60%, due to resizing,
cropping or something similar, without bloating your image pane."
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