An Improved Dual Image-based Reversible Hiding Technique Using LSB Matching

A dual image technique is used as one of the data hiding method. Dual image copies an image to two same images. Through two images to embed or extract secret data, this technique significantly enhances image quality. A dual image technique is good or bad depending on the merits of its algorithm. This paper proposes a method to improve Lu et al. scheme. They use two pixels as a pair and choose two same images to embed, and then choose both two pixels to continue the procedure. We will depend on circumstances of the second pixel pair after previous embedding, and this case can increase the capacity. The experiment results show that our proposed scheme is effective.