The few-color images are often synthetic graphics without complicated color and texture variation, which makes the embedding of invisible digital watermark difficult. This paper proposes a data hiding method that can hide a moderate amount of data in a few-color image, such as cartoon images

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The main goal of this study consists in the development of the worst case additive attack (WCAA) for quantization-based methods using as design criteria the bit error rate probability and the maximum achievable rate of reliable communications. Our analysis is focused on the practical scheme known

these problems, multimedia data tend to increase in the distributed network environment. Hence, most image information has been transmitted in the form of digitalization. Therefore, the need for multimedia contents protection must be addressed. This paper is focused on possible solutions for multimedia contents

Abstract. The commonly used JPEG and GIF images on Internet web sites have become more popular for steganographic applications. However, the use of lossy image compression will destroy the embedded message on the marked images. This article presents a novel data hiding method for palette images

be robust to data hiding, we propose an original K color ordering algo-rithm. Finally, the DCT-based data-hiding method benefits from the used of an hybrid JPEG coder which allows to com-press images with a Word Wide Web standard format and in the same time proposes a data-hiding functionality. 1.

Abstract — A novel quantization-based data-hiding method, named Rational Dither Modulation (RDM), is presented. This method amounts to simple modifications of the well-known Dither Modulation (DM) scheme, which is largely vulnerable to scaling attacks. With such modifications, RDM becomes invariant

A lossy compression tolerant data hiding method is proposed in this paper. The image which hides data is named a stego-image. Most of data hiding methods will lose some hidden data when the stego-image is compressed by lossy compression process. However, there are few people will transmit image

A novel quantization-based data-hiding method, named Rational Dither Modulation (RDM) is pre-sented. This method retains most of the simplicity of the dither modulation (DM) scheme, which is largely vulnerable to amplitude scalings, but modifies the latter in such a way that it becomes invariant