Applying Histogram Modification to Embed Secret Message in AMBTC

In 2014, Lo et al. employs the histogram shifting technique to present a reversible data hiding scheme for the "absolute moment block truncation coding image" (AMBTC). In their scheme, the secret message is embedded into the quantization levels. The bitmaps in their scheme cannot carry any secret message. The embedding capacity of their scheme is lower. Thus, in this paper, a reversible data hiding scheme based on AMBTC is proposed with the purpose of enhancing the embedding capacity. Experimental results demonstrated that the embedding capacity of our scheme is higher than those of the Lo et al.\´s scheme.