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This paper presents a reversible data hiding method for JPEG images by combining (7, 4) the Hamming code and improving Huang et al.’s data hiding technique. Huang et al.’s original method embeds data into JPEG quantized 8×8 block DCT coefficients by histogram shifting and alternating current (AC) coefficients with values of 1 and -1 to embed secret bits. The proposed method here adopts a hybrid embedding strategy to increase maximum embedding capacity. The experimental results show that the proposed method allows for maximum embedding capability while maintaining acceptable image quality.

High-Capacity Reversible Data Hiding Method for JPEG Images