Bug 464475

Summary:	It would be nice if auto crop also worked with black borders,and not just white borders.
Product:	[Applications] digikam	Reporter:	jm7 <jm7>
Component:	Plugin-Editor-Crop	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	REPORTED ---
Severity:	wishlist	CC:	caulier.gilles, metzpinguin, michael_miller
Priority:	NOR
Version First Reported In:	7.8.0
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description jm7@acm.org 2023-01-18 19:17:36 UTC

SUMMARY
I have a large number of slides that I am scanning, and because they are backlit when scanned, the over scan comes out a near black.  Autocrop refuses to work on these, and I have to do every one of them manually.

Comment 1 caulier.gilles 2023-01-19 08:05:59 UTC

You want mean that scanned image has a black frames around ? Like this one:

https://docs.digikam.org/en/_images/editor_autocrop.webp

... taken from the docmentation:

https://docs.digikam.org/en/image_editor/transform_tools.html#cropping-a-photograph

The autocrop algorithm is designed to crop black frames not white frames.

Gilles Caulier

Comment 2 Maik Qualmann 2023-01-19 11:31:50 UTC

Maybe provide a sample image. A test here with a image and a black frame works without any problems.

Maik

Comment 3 caulier.gilles 2025-04-11 23:43:44 UTC

Another wish for Auto-crop AI based tool, related to bug 499208