A Study to Develop Reversible Data Hiding Based on DMT 2-bits for Medical Images

Abstract

This research presents a method to embed two bits that can be recovered based on the double modification testing (DMT) technique for medical images. One strategy was used to achieve higher data embedding while producing the same or lower distortion. The small prediction error values can be expanded to hide information (2-bits), which can be utilized significantly. Images with a smooth surface and some areas with high variability, such as medical images, were tested. Another benefit of using DMT 2-bit is that compression tools to reduce the location map size are not necessary. The size of the location map is smaller and can be embedded as part of the payload. The results show that the proposed method can achieve a better capacity to embed while the distortion remains low when compared to previous work.