Security and Communication Networks / 2018 / Article / Tab 1

Research Article

A Robust Watermarking Scheme Based on the Mean Modulation of DWT Coefficients

Table 1

Quality of watermarked images using different insertion parameters ().

Message size Transformation level Watermarked Lena imagesWatermarked Couple imagesWatermarked Baboon images

256l=1
T4.473.122.024.483.132.014.473.132.02
PSNR37.994340.99944.996137.990240.990144.999337.999840.994544.9965
SSIM0.92310.95940.983290.950050.973940.989380.974390.986810.99468
l=2
T9.096.394.019.096.434.029.086.414.01
PSNR37.996740.995844.999537.99840.994144.990137.997140.99744.9963
SSIM0.928720.962450.98460.953730.975850.990150.976280.987780.99507
l=3
T17.3812.287.6417.4512.257.6117.4812.27.59
PSNR37.992740.99644.993537.995240.995544.995837.992340.998744.9991
SSIM0.9550.976570.990240.970740.984970.993790.9850.99240.99687

512l=1
T4.473.132.024.473.132.014.463.132.01
PSNR37.998340.996844.99637.997340.999144.998437.999240.995544.9952
SSIM0.923190.95940.983290.950060.973970.989360.974430.986810.99467
l=2
T9.096.414.019.106.424.029.056.404.02
PSNR37.998540.990844.999837.993740.994644.994337.996540.998444.9921
SSIM0.92880.962410.984570.953590.975850.990170.976330.987770.99505
l=3
T17.4512.287.6217.4812.267.6417.3012.257.61
PSNR37.997940.991344.99537.998240.99944.994537.997440.999844.9975
SSIM0.954780.976420.990260.970610.984990.993770.985240.992390.99688

1024l=1
T4.473.132.024.473.132.024.473.132.01
PSNR37.998440.997844.995137.998440.993344.992237.996940.998444.998
SSIM0.923250.95940.983290.950140.97390.989370.974410.986830.99467
l=2
T9.0826.41174.02379.106.424.029.086.404.02
PSNR37.996940.996144.99937.990540.996244.997537.99740.999544.9942
SSIM0.928850.962450.984560.953570.97590.990160.976280.987820.99506
l=3
T17.4012.267.6017.4412.307.6417.3512.237.62
PSNR37.997240.998744.995737.999340.998844.997437.996540.999744.999
SSIM0.955490.976560.990290.970780.984840.993750.985210.992440.99686

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