A EFFICIENT PIXEL VALUE ORDERING DATA HIDING METHOD BASED ON THREE STEGO IMAGES

Abstract

Reversible data hiding is an active information security field that has received the attention of many researchers. This paper focuses on researching the reversible hiding method based on PVO (Pixel Value Ordering). This is a technique to partition pixels into blocks and arrange them in ascending order, embedding information based on the prediction errors at the largest and smallest pixels. The characteristics of the PVO method are high image quality but limited embedding capacity. The proposed method provides a reversible data hiding method based on three stego images. The proposed idea uses the technique of PVO that is dividing pixels into blocks and arranging pixel values ​​in a ascending order, then embedding secret bits on the largest and smallest pixels. The experimental results confirmed that the embedding capacity of the proposed method is superior to some of the relevant PVO works on the aspects of embedding capacity and the image quality remains high.