Open AccessDOI
A Digital Image Copyright Protection Scheme Based on Visual Cryptography
Ren-Junn Hwang
- Vol. 3, Iss: 2, pp 97-106
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TLDR
The proposed watermark method is built up on the concept of visual cryptography and shows that the watermark pattern in the marked image has good transparency and robustness.Abstract:
A simple and efficient watermark method is proposed in this paper. The watermark method is an excellent technique to protect the copyright ownership of a digital image. The proposed watermark method is built up on the concept of visual cryptography. According to the proposed method, the watermark pattern does not have to be embedded into the original image directly, which makes it harder to detect or recover from the marked image in an illegal way. It can be retrieved from the marked image without making comparison with the original image. The notary also can off-line adjudge the ownership of the suspect image by this method. The watermark pattern can be any significant black/white image that can be used to typify the owner. Experimental results show that the watermark pattern in the marked image has good transparency and robustness. By the proposed method, all the pixels of the marked image are equal to the original image.read more
Citations
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Book ChapterDOI
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TL;DR: The latest developments of visual cryptography since its inception in 1994 are summarized, the main research topics in this area are introduced and the current problems and possible solutions are outlined.
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Video watermarking scheme based on visual cryptography and scene change detection
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References
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Journal ArticleDOI
Secure spread spectrum watermarking for multimedia
TL;DR: It is argued that insertion of a watermark under this regime makes the watermark robust to signal processing operations and common geometric transformations provided that the original image is available and that it can be successfully registered against the transformed watermarked image.
Journal ArticleDOI
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TL;DR: This work explores both traditional and novel techniques for addressing the data-hiding process and evaluates these techniques in light of three applications: copyright protection, tamper-proofing, and augmentation data embedding.
Visual Cryptography
Moni Naor,Adi Shamir +1 more
TL;DR: In this paper, a new type of cryptographic scheme, which can decode concealed images without any cryptographic computations, is proposed, which is called k-out-of-n secret sharing.
Journal ArticleDOI
Hidden digital watermarks in images
Chiou-Ting Hsu,Ja-Ling Wu +1 more
TL;DR: The experimental results show that the proposed image authentication technique by embedding digital "watermarks" into images successfully survives image processing operations, image cropping, and the Joint Photographic Experts Group lossy compression.
Proceedings ArticleDOI
A multiresolution watermark for digital images
TL;DR: A new multiresolution watermarking method based on the discrete wavelet transform (DWT), where Pseudo-random codes are added to the large coefficients at the high and middle frequency bands of the DWT of an image.