Journal ArticleDOI
Mean quantization based image watermarking
Liang-Hua Chen,Jyh-Jiun Lin +1 more
TLDR
Experimental results show that the proposed watermarking scheme is robust to a wide range of image distortions and is superior to the conventional quantization based technique.About:
This article is published in Image and Vision Computing.The article was published on 2003-08-01. It has received 55 citations till now. The article focuses on the topics: Watermark & Digital watermarking.read more
Citations
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Journal ArticleDOI
Robust Image Watermarking Based on Multiscale Gradient Direction Quantization
TL;DR: Experimental results show that the proposed GDWM outperforms other watermarking methods and is robust to a wide range of attacks, e.g., Gaussian filtering, amplitude scaling, median filtering, sharpening, JPEG compression, Gaussian noise, salt & pepper noise, and scaling.
Journal ArticleDOI
Image hiding scheme with modulus function and dynamic programming strategy on partitioned pixels
TL;DR: A novel image-hiding scheme that is capable of offering better stego-image quality than a number of well-accepted schemes and following the dynamic programming strategy is proposed.
Journal ArticleDOI
An optimal image watermarking approach based on a multi-objective genetic algorithm
Jun Wang,Hong Peng,Peng Shi +2 more
TL;DR: The proposed multi-objective watermarking method can automatically optimize system parameters, and a variable-length mechanism is specially designed to search the most suitable positions for embedding watermarks to effectively avoid the difficulty of determining the optimally weighted factor in existing single-objectives water marking schemes.
Journal ArticleDOI
Fragility and Robustness of Binary-Phase-Only-Filter-Based Fragile/Semifragile Digital Image Watermarking
Jun Sang,Mohammad S. Alam +1 more
TL;DR: The identical ratio (IR) between the extracted watermark and the computed BPOF to detect watermarks and measure the degree of authenticity is proposed, which is simpler, computationally efficient, and yields better watermark-detection performance when compared to the correlation-based calculation.
Journal ArticleDOI
An adjusted-purpose digital watermarking technique
Yi-Ta Wu,Frank Y. Shih +1 more
TL;DR: By extracting pixel-based features, a novel adjusted-purpose digital watermarking technique is presented to improve robustness of embedded watermarks, but also provide an integrated view in studies of digital watermarks.
References
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Journal ArticleDOI
A theory for multiresolution signal decomposition: the wavelet representation
TL;DR: In this paper, it is shown that the difference of information between the approximation of a signal at the resolutions 2/sup j+1/ and 2 /sup j/ (where j is an integer) can be extracted by decomposing this signal on a wavelet orthonormal basis of L/sup 2/(R/sup n/), the vector space of measurable, square-integrable n-dimensional functions.
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
Quantization index modulation: a class of provably good methods for digital watermarking and information embedding
Brian Chen,Gregory W. Wornell +1 more
TL;DR: It is shown that QIM is "provably good" against arbitrary bounded and fully informed attacks, and achieves provably better rate distortion-robustness tradeoffs than currently popular spread-spectrum and low-bit(s) modulation methods.
Journal ArticleDOI
Multimedia watermarking techniques
Frank Hartung,Martin Kutter +1 more
TL;DR: The basic concepts of watermarking systems are outlined and illustrated with proposed water marking methods for images, video, audio, text documents, and other media.
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.