Bug 154829

Summary:	inpainting tool doesn't use greycstoration threads
Product:	[Applications] digikam	Reporter:	Lynda Metref <lyly>
Component:	Plugin-Editor-GmicQt	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	caulier.gilles
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:	5.8.0

Description Lynda Metref 2007-12-29 20:16:21 UTC

Version:            (using KDE KDE 3.5.8)
Installed from:    Ubuntu Packages
OS:                Linux

The inpainting plugin in Digikam uses the greycstoration algorithm. This algo supports multithreading but when running it through Digikam, it only uses one CPU. I compared the behaviours of Digikam 0.9.2 and greycstoration 2.5.2: only the latter uses more than one CPU.

Expected behaviour: spawn one thread per CPU.

Comment 1 caulier.gilles 2007-12-31 09:50:49 UTC

Lynda,

Witch digiKam version you use ?

Gilles Caulier

Comment 2 Lynda Metref 2007-12-31 13:45:28 UTC

0.9.2-final from Ubuntu gutsy repository

Comment 3 caulier.gilles 2007-12-31 14:12:27 UTC

OK. 

This is fixed on new digiKam 0.9.3. For indeep problem in CImg library comming with 0.9.2, multithreading has not been used.

With 0.9.3, 2 separate CImg thread are used. Cimg library have been updated of course...

Gilles

Comment 4 Gerhard Kulzer 2008-01-01 14:23:03 UTC

Gilles, 
Restauration and Resize using Greystoration work fine with 2 threads at 100% CPU. Inpainting launches 2 threads as well, but the combined load never exceeds 50%. It seems the threads exclude each other mutually, one goes up, the other down and vise-versa.

Gerhard

Comment 5 caulier.gilles 2017-09-05 05:10:50 UTC

With 5.8.0, in-painting image editor tool was been replaced by a Clone tool.

More details here : 

https://community.kde.org/GSoC/2017/StatusReports/shazaismailkaoud

Gilles Caulier