High capacity data embedding using colour palette decomposition

Authors:
K. B. Raja;S. Siddaraju;K. R. Venugopal;L. M. Patnaik
Affiliations:
Department of Computer Science Engineering, University Visvesvaraya College of Engineering, Bangalore University, Bangalore;Department of Computer Science Engineering, University Visvesvaraya College of Engineering, Bangalore University, Bangalore;Department of Computer Science Engineering, University Visvesvaraya College of Engineering, Bangalore University, Bangalore;Microprocessor Applications Laboratory, Indian Institute of Science, Bangalore
Venue:
SPPR'07 Proceedings of the Fourth conference on IASTED International Conference: Signal Processing, Pattern Recognition, and Applications
Year:
2007

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Abstract

Steganography is the embedding of secret message in the cover image for covert communication. In this paper, we present a High Capacity Data Embedding using Colour Palette Decomposition (CPD) in which the payload is embedded into the cover image as an index of shifted centroids to derive the stego image. The error control coding is applied to stego image to increase PSNR, capacity and security. It is observed that our algorithm has higher PSNR and capacity in comparison to earlier works.