ABSTRACT

This chapter provides an overview of existing fragile reversible data-hiding schemes. Reversible data-hiding techniques refer to the schemes that the cover image can be recovered losslessly after extracting the data from the stego image. Reversible data-hiding techniques have attracted extensive research interest due to the fact that a recoverable cover image is more suitable for sensitive applications, such as military and medical applications. The chapter discusses basic schemes in each category to provide basic information in the field for the reader. The chapter illustrates some complicated schemes, describes the history of the development of the techniques, and shows that the experimental results of some schemes in each category. In a semifragile technique, the embedded data are able to survive a possible modification of the stego image. Data hiding for digital images is the science of embedding data into digital images by making slight changes to the original images.