Center-cut for color-image quantization
The Visual Computer: International Journal of Computer Graphics
Digital watermarking based on neural networks for color images
Signal Processing - Special section on digital signal processing for multimedia communications and services
Lossless data embedding--new paradigm in digital watermarking
EURASIP Journal on Applied Signal Processing - Emerging applications of multimedia data hiding
Invertible Authentication Watermark for JPEG Images
ITCC '01 Proceedings of the International Conference on Information Technology: Coding and Computing
An iterative method of palette-based image steganography
Pattern Recognition Letters
A difference expansion oriented data hiding scheme for restoring the original host images
Journal of Systems and Software
Embedding Invisible Watermarks into Digital Images Based on Side-Match Vector Quantization
Fundamenta Informaticae
Lossless Data Hiding in the Spatial Domain for High Quality Images
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
A new steganographic method for color and grayscale image hiding
Computer Vision and Image Understanding
Adaptive lossless steganographic scheme with centralized difference expansion
Pattern Recognition
A fuzzy c-means clustering-based fragile watermarking scheme for image authentication
Expert Systems with Applications: An International Journal
On the relation between Memon's and the modified Zeng's palette reordering methods
Image and Vision Computing
An adjusted-purpose digital watermarking technique
Pattern Recognition
Tailored reversible watermarking schemes for authentication of electronic clinical atlas
IEEE Transactions on Information Technology in Biomedicine
Reversible watermark using the difference expansion of a generalized integer transform
IEEE Transactions on Image Processing
Robust image-adaptive data hiding using erasure and error correction
IEEE Transactions on Image Processing
Lossless generalized-LSB data embedding
IEEE Transactions on Image Processing
Reversible data embedding using a difference expansion
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
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In this paper, a digital fragile watermarking technique is proposed to aim for protecting the content of a color palette image. This technique is based on the palette clustering to facilitate the authentication of the image integrity. First, the image to be protected is partitioned into non-overlapped blocks where block features are calculated by the clustering information conducted on the color palette. The block features are considered as the unique authentication information, which are later embedded into the index values of the color palette using the least significant bit (LSB) substitution technique. Finally, we replace the original index value by another one which holds the closest color appearance and belongs to the same cluster group. As a result, this kind of replacement, which supersedes the LSB substitution technique, significantly decreases the image distortion and produces a watermarked image with high visual quality. Obviously, when the receiver acquires the watermarked image, the authentication information being embedded can be extracted for comparison. As a consequence, the receiver will be able to verify the integrity of the watermarked image as well as identify any possible area which has been tampered.