Bug 338765

Summary: BQM Watermark tool : output files have reduced size compared to original
Product: [Applications] digikam Reporter: Stuart <stuart>
Component: Plugin-Bqm-WaterMarkAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: major CC: caulier.gilles, metzpinguin, online
Priority: NOR    
Version: 4.2.0   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In: 4.11.0

Description Stuart 2014-09-02 21:42:53 UTC 
When adding a watermark to a jpeg image using Batch Queue Manager and saving the file results in a very much reduced file size. A 6.7MB original jpeg image processed in this way ends up being saved as a 1.2MB image even with a jpeg compression value of 100%.The process using BQM should result in an image of about 6.2MB (which is what imagemagick and GIMP achieve). 

Reproducible: Always

Steps to Reproduce:
1. Select a jpeg image
2.Enter BQM and select watermark
3. Select to save as a new file name
4. Run queue

Actual Results:  
Original image was 6.7mb Resulting image saved is 1.2MB

Expected Results:  
 If the same watermark operation is done manually in edit within digikam the resulting file size is 6.2MB. 

This is 100% repeatable and effectively means the BQM is unusable for watermarking images and maintaining quality of image.
Comment 1 caulier.gilles 2015-05-10 08:25:29 UTC 
Maik,

This entry is solved with you last changes in BQM ?

Gilles
Comment 2 Maik Qualmann 2015-05-10 10:40:24 UTC 
Gilles,

Yes, the same problem with the settings for compression when saving the images.

Maik