Analysis of Reversible Data Hiding Techniques for Digital Images

Abstract

With the rapid advancement of information technology, more data and images are now accessible through the Internet. As a consequence, some sort of authentication is required for such sensitive information. Intruders could be present in the transmission path between the transmitter and the receiver and capture the image/data. After the images have been taken, the intruder may be able to view its important content. In other cases, it may not be a problem. Access to such images or data, on the other hand, is not desired in industries such as medicine or the military. Data concealment is one of the most effective methods for avoiding this scenario. Data concealing is a technique in which secret data is integrated into the cover media and is accessible only to the sender and receiver. The method of data concealment has a wide range of applications, including copyright protection for films, videos, and other media. The data concealing method is more secure because attackers cannot alter the information concealed within the cover medium, even if any changes made by the intruder are visible to the sender and recipient. Steganography is perhaps the most effective data concealing methods. One of the uses of steganography is reversible data hide (RDH). After the embedded message has been removed, RDH is a method for retrieving the original cover without losing any data. The following is a synopsis of the research for this subject. A literature review is a brief overview of various techniques proposed by various researchers. The results show that the PSNR for the Lena image is 55.8 dB at a 0.05 bpp embedding rate, which is higher than the TBRDH technique. In terms of PSNR, the suggested LSWTRDH outperforms other embedding rates