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A novel image watermarking method based on singular value decomposition and digital holography
A novel image watermarking method based on singular value decomposition and digital holography
- Source :
- SPIE Proceedings.
- Publication Year :
- 2016
- Publisher :
- SPIE, 2016.
-
Abstract
- According to the information optics theory, a novel watermarking method based on Fourier-transformed digital holography and singular value decomposition (SVD) is proposed in this paper. First of all, a watermark image is converted to a digital hologram using the Fourier transform. After that, the original image is divided into many non-overlapping blocks. All the blocks and the hologram are decomposed using SVD. The singular value components of the hologram are then embedded into the singular value components of each block using an addition principle. Finally, SVD inverse transformation is carried out on the blocks and hologram to generate the watermarked image. The watermark information embedded in each block is extracted at first when the watermark is extracted. After that, an averaging operation is carried out on the extracted information to generate the final watermark information. Finally, the algorithm is simulated. Furthermore, to test the encrypted image’s resistance performance against attacks, various attack tests are carried out. The results show that the proposed algorithm has very good robustness against noise interference, image cut, compression, brightness stretching, etc. In particular, when the image is rotated by a large angle, the watermark information can still be extracted correctly.
- Subjects :
- business.industry
Computer science
Data_MISCELLANEOUS
Holography
Watermark
law.invention
Singular value
Transformation (function)
law
Computer Science::Multimedia
Singular value decomposition
Computer vision
Artificial intelligence
business
Digital watermarking
Digital holography
Computer Science::Cryptography and Security
Block (data storage)
Subjects
Details
- ISSN :
- 0277786X
- Database :
- OpenAIRE
- Journal :
- SPIE Proceedings
- Accession number :
- edsair.doi...........746906cfbac67b99c147e86295e20f41
- Full Text :
- https://doi.org/10.1117/12.2246593