Accurate and reliable reversible data hiding using sequential encoding techniques

摘要

Reversible data hiding facilitates images to be authenticated and by eliminating the digitalwatermark. Histogram Shifting Based Reversible Data Hiding (HSRDH) is presented in theprevious research, which aims to decrease the performance with low quality when recreatingthe images. However, embedding patches could be hacked where it does not concentrate onthe security threats. This issue is resolved using Sequential Encoding Based Reversible DataHiding (SEB-RDH) method. Here, initially input image is transformed into Haar wavelet usingdiscrete wavelet transform. This wavelet is decomposed by utilizing 1D wavelet transformation;Haar wavelet is processed, and after that, by means of utilizing 2D wavelet transformation,the result of 1D wavelet transformation is decomposed once more. Horizontal coefficients areseparated and embedded with the normalized input image. This type of data hiding enlargedthe compression size and acts as a guard from the hackers who could not hack the protecteddata contents. This technique guarantees the enlarged reconstruction image accurateness in thereceiver side. It is implemented in Matlab simulation environment, and it is confirmed that theSEB-RDH displays 15.8% improved PSNR rate after that the previous technique HSRDH and26.5% improved MSE rate compared with the previous HSRDH technique.