High Capacity Data Hiding Scheme for DCT Image Using the YCbCr Color Space and Chaotic Map

Abstract

Data hiding is a technique of transmitting additional information via host data such as digital images. It serves as a better way of securing message for the purpose of identification, annotation and copyright. Its main application is to increase or enrich the content. It aims to cover a significant amount of data in the host image with the minimum possible distortion. This paper deals with reversible data hiding technique with high insertion capacity. The scramble of data hiding is assured with a chaotic map. Indeed, the method manipulates in the Discrete Cosine Transform (DCT) and operates the specifications of the YCBCR color space. Our method provides high capacity insertion while maintaining the strength of the mark against attacks that can achieve the modified file. The proposed schema exploits the frequency domain benefits and the YCbCr color space; this allows robustness against compressed modalities and improved visual quality. Thanks to chaotic phenomenon data hiding is carried out safely. Index Terms-data hiding, discrete cosine transform, YCbCr, chaos, logistic map I. INTRODUCTION The advent of the internet from the 90s, opened broad prospects for different applications in many domains, such as tele-education, health, military and many other activities. The amount of digital data exchanged has increased exponentially facilitated by the efficiency of communication networks and the constant increase in data transfer rates [1]. The democratization of online services and the availability of low-cost computers, have allowed the emergence of new storage offers and distribution of multimedia data, generating significant benefits to the multimedia industry [2]. However, free access to data facilitated hacking multimedia works, throw peer-to-peer and direct download for sharing multimedia files [3], [4]. This allowed the development of new data hiding techniques to ensure their traceability.