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Perceptually_Optimized_Watermarking Track the visibility threshold of an image watermarking method.

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Categories Images / Quality Assessment / Watermarking
Quality assessment method Two Alternative Forced Choice
Created the09 Apr 2015


More information here.

9 original color images were used, 243 distorted images were generated with 3 different embedding algorithms, for each image (and each algorithm), 9 embedding strengths were used (9x9x3=243).

Details on this database can be found in the citation below. Subjective evaluations were made at viewing distance of 6 times the screen height using a 2AFC (Two Alternative Forced Choice) protocol. Distortions for each processing and each image have been optimised in order to uniformly cover the visibility scale.

37 observers were enrolled in this experiment. An outlier detection method was performed, the dendrogram is plotted here. Overall, 6 observers were discarded.

Source publication : Please, cite the following paper(s) in your publications if you use this database in your work

Perceptual dft watermarking with improved detection and robustness to geometrical distortions M. Urvoy, D. Goudia, F. Autrusseau

Journal articleIEEE Transactions on Information Forensics and Security, Jul 2014, 9 (7), 1108-1119 BibTex XML