This paper presents a novel Mod-4 steganographic method in discrete cosine transform (DCT) domain. A group of 2 /spl times/ 2 quantized DCT coefficients (GQC) is selected as the valid embedding area if more than two DCT coefficients are outside the interval of [-1,1]. The modulo 4 arithmetic operation is further applied to all the valid GQCs to embed a pair of binary bits using the shortest-route modification scheme. Each secret message is also encrypted to provide the system with more security. The proposed system has been extensively tested on a variety of images with different textures. Experimental results demonstrate that our system successfully preserves the quality of the images and stays undetected by the well-known steganalysis methods.
An adaptive DCT-based Mod-4 steganographic method
2005-01-01
614946 byte
Conference paper
Electronic Resource
English
An Adaptive Dct-Based Mod-4 Steganographic Method
British Library Conference Proceedings | 2005
|An adaptive steganographic method based on the measurement of just noticeable distortion profile
British Library Online Contents | 2011
|A Palette-Based Image Steganographic Method using Colour Quantisation
British Library Conference Proceedings | 2005
|Novel steganographic method based on jig swap puzzle images
British Library Online Contents | 2009
|