Secure Quantization Based Data Embedding

Abstract

In this paper we propose a new secure quantization based data embedding algorithm and analyze the security, capacity, robustness and embedding induced distortion of this scheme. Using a joint security, robustness and capacity measure, we show that the proposed scheme provides an enhancement in security in comparison to current secure quantization based data hiding schemes. We derive a mathematic expression for the security of our algorithm. Using this metric, we show that the security of our algorithm can be increased independent of these parameters: capacity, robustness and embedding induced distortion. The maximum security depends only on the length of key sequence, which is limited only by the size of the host image