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Research on Digital Image Watermarking Algorithm in Frequency Domain Based on Matlab

Wu Hejing

Wu Hejing

East University of Heilongjiang
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Hejing, Wu
  
21 mai 2023
Research on Digital Image Watermarking Algorithm in Frequency Domain Based on Matlab's Cover Image
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Publié en ligne: 21 mai 2023
Pages: 32 - 43
DOI: https://doi.org/10.21307/ijanmc-2021-033
Mots clés
© 2021 Wu Hejing, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

The performance indexes of robust watermarking are reasonable and compromise
The performance indexes of robust watermarking are reasonable and compromise

Figure 2

General model of watermark generation
General model of watermark generation

Figure 3

Watermark embedding and extraction process
Watermark embedding and extraction process

Figure 4

Watermark image
Watermark image

Figure 5

Watermark image
Watermark image

Figure 6

Scrambling once
Scrambling once

Figure 7

Scrambling 5 times
Scrambling 5 times

Figure 8

Four pictures of watermark system
Four pictures of watermark system

Figure 9

Two compression test results
Two compression test results

Figure 10

Noise test results
Noise test results

Figure 11

Rotation and shear test
Rotation and shear test

Watermark simulation related parameters

Attack mode Parameter Normalized parameters Signal to noise ratio (db)
unassailed nothing 0.894375 38.424410
95%JPEG compress 95% 0.894085 38.293235
45%JPEG compress 45% 0.754401 35.026503
Gaussian noise 1/4 0.547445 20.157188
Salt and pepper noise 0.002 0.664663 21.999809
Rotate 2° 0.796050 23.123601
Rotate 95° 0.779734 19.440330
Shear 1/4 0.664663 11.225899
Langue:
Anglais
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4 fois par an
Sujets de la revue:
Informatique, Informatique, autres
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