The purpose of this page is to make available one subjective quality assessment from IRCCyN/IVC. The experiments were conducted in our lab in normalized conditions.
Content
10 original grayscale images were used (5 natural images: BOWS2 DB and 5 art images: EROS DB), 120 distorted images were generated with 6 different embedding strength, and either with or without CSF weighting function.
These "Broken Arrows" watermarking algorithm was used (see the "bows2" contest). Subjective evaluations were made at viewing distance of 6 times the screen height using a DSIS (Double Stimulus Impairment Scale) method with 5 categories and 17 observers. Distortions for each processing and each image have been optimised in order to uniformly cover the subjective scale.
Download
Download the IVC-BA database (27 MB zip file)
A Microsoft Excel spreadsheet, giving all subjective quality scores is included in the above archive.
How to cite the IVC-BA database
If you use BibTeX, here's the citation:
@misc{ivcbadb,
title = {Subjective quality assessment of the Broken Arrows watermarking technique},
author = {Autrusseau, Florent, and Bas, Patrick},
year = {2009},
note = {http://www.irccyn.ec-nantes.fr/~autrusse/Databases/BrokenArrows/}
}
If you don't use BibTeX, use simply:
Florent Autrusseau, Patrick BasThis work was supported by the 'TSAR' ANR research project (ARA-SSIA-2005 project).
Subjective quality assessment of the Broken Arrows watermarking technique
http://www.irccyn.ec-nantes.fr/~autrusse/Databases/BrokenArrows/
Dissemination
This database was used in
M. Carosi, V. Pankajakshan, F. Autrusseau, "Toward a simplified perceptual quality metric for watermarking applications", Proceedings of the SPIE Electronic Imaging, conf. 7542, January 2010, San Jose, CA, USA.Many thanks to Romuald Pepion & Romain Cousseau for their valuable help in setting up the experiment.