Proceedings ArticleDOI
Digital signature of color images using amplitude modulation
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TLDR
A new method based on amplitude modulation is presented that has shown to be resistant to both classical attacks, such as filtering, and geometrical attacks and can be extracted without the original image.Abstract:
Watermarking techniques, also referred to as digital signature, sign images by introducing changes that are imperceptible to the human eye but easily recoverable by a computer program. Generally, the signature is a number which identifies the owner of the image. The locations in the image where the signature is embedded are determined by a secret key. Doing so prevents possible pirates from easily removing the signature. Furthermore, it should be possible to retrieve the signature from an altered image. Possible alternations of signed images include blurring, compression and geometrical transformations such as rotation and translation. These alterations are referred to as attacks. A new method based on amplitude modulation is presented. Single signature bits are multiply embedded by modifying pixel values in the blue channel. These modifications are either additive or subtractive, depending on the value of the bit, and proportional to the luminance. This new method has shown to be resistant to both classical attacks, such as filtering, and geometrical attacks. Moreover, the signature can be extracted without the original image.read more
Citations
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Journal ArticleDOI
Using Curvelet transform for watermarking based on amplitude modulation
TL;DR: This paper proposes a precise and robust watermarking scheme based on the technique called amplitude modulation, and proposes using the Curvelet transform to detect singularities such as lines and curves and to prevent the system from using these locations in an image for embedding the watermark bits.
Proceedings ArticleDOI
Digital robbery; authors are not unprotected
TL;DR: This paper presents different solutions, commercial, freeware or scientific, for the marking of multimedia objects, called watermarks for the need for image, animation and video copyright protection.
Journal ArticleDOI
Watermarking relying on cover signal content to hide synchronization marks
Damien Delannay,Benoît Macq +1 more
TL;DR: A scheme to hide synchronization marks through the modulation of the embedded signal by a content-based pseudo-random signal and the efficiency of this approach on watermark patterns with a periodic structure is illustrated.
Proceedings ArticleDOI
The effects of invisible watermarking on satellite image classification
Gregory L. Heileman,Yunlong Yang +1 more
TL;DR: In this paper, the impact of invisible watermarking on the performance of image classification algorithms is quantified, with particular attention given to the type of content that the watermark will be applied to.
Proceedings ArticleDOI
Content based color image adaptive watermarking scheme
TL;DR: A novel technique is proposed for the watermark casting and retrieval by utilizing the properties of the image itself, which demonstrates the robustness of the algorithm to many attacks, such as JPEG, JPEG2000 and A/D conversion.
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.
Proceedings ArticleDOI
A digital watermark
TL;DR: The paper discusses the feasibility of coding an "undetectable" digital water mark on a standard 512/spl times/512 intensity image with an 8 bit gray scale, capable of carrying such information as authentication or authorisation codes, or a legend essential for image interpretation.
Proceedings ArticleDOI
Techniques for data hiding
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 protecting, tamper-proofing, and augmentation data embedding.