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DWT_vs_DTCWT Subjective comparison between DWT and DTCWT

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Categories Images / Quality Assessment / Watermarking
Quality assessment method Double Stimulus Impairment Scale
Created the12 Feb 2015
Size30.8 Mo


12 original grayscale images were used (from the BOWS-2 contest), 120 distorted images were generated from 5 embedding strengths either in the wavelet domain (DWT) or using the Dual Tree Complex Wavelet transform (DT-CWT).

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 14 observers. Distortions for each processing and each image have been optimised in order to uniformly cover the subjective scale.

A Microsoft Excel spreadsheet, giving all subjective quality scores is included in the above archive.

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

Dt-cwt versus dwt watermark embedding F. Autrusseau, P. Meerwald

ReportFeb 2009 BibTex XML