An improved image data hiding method using two-layer embedment strategy

Authors:
Wien Hong;Yeon-Kang Wang;Kai-Yung Lin;Mei-Chen Wu
Affiliations:
Department of Information Management, Yu Da University, Taiwan;Department of Multimedia and Game Science, Yu Da University, Taiwan;Department of Information Management, Yu Da University, Taiwan;Department of Information Management, Yu Da University, Taiwan
Venue:
AICI'11 Proceedings of the Third international conference on Artificial intelligence and computational intelligence - Volume Part II
Year:
2011

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Abstract

In this paper, we propose a reversible image embedding method that extends Hong and Chen's work by using a two-layer embedment strategy. Hong and Chen's method uses a set of basic pixels as a guide, and linearly predicts the values of other pixels to create prediction error histogram for data embedment. However, the set of basic pixels provides no embeddable space. The proposed method employs a two-layer embedment strategy and predicts the pixel values of the set of basic pixels by using their neighboring pixels. Embeddable spaces are created by adopting the histogram shifting method. The experimental results revealed that the proposed method provides higher payload than that of prior works under the same visual quality.