Improving Histogram Shifting Reversible Data Hiding by Pixel Pair´s Average Predictions

Based on histogram shifting and histogram modification of difference images, this paper proposed a method of histogram shifting reversible data hiding by pixel pair´s average predictions on gray images. Under the premise that the average remains changeless after each operation, embedding and extracting operations are completed, utilizing the difference histogram theory. Experimental results demonstrate that the proposed method can keep high image quality and high embedding capacity, and produce little auxiliary information. It is better than the comparative method with good performance.