원문정보
초록
영어
In recent years, several lossless data hiding techniques have been proposed for images. Lossless data embedding can take place in the spatial domain or in the transform domain. They utilized characteristics of the difference image or the transform coefficient histogram and modify these values slightly to embed the data. However, after embedding message bits these steganography changed the nature of the difference image histogram or the transform coefficient histogram gradually. In this paper, we introduce two new steganalytic techniques based on the difference image histogram and the transform coefficient histogram. The algorithm can not only detect existence of secret messages in images which are embedded by above methods reliably, but also estimate the amount of hidden messages exactly.
목차
1. Introduction
2. Reversible Data Hiding
2.1 Lossless Data Hiding Based on Histogram Modification of Difference Image
2.2. Lossless Data Hiding Based on Integer Wavelet Histogram Shifting
3. Proposed Steganalytic Methods
3.1. Steganalytic Method for DIH method.
3.2. Steganalytic Method for IWH Method
4. Experimental Results
5. Conclusions
References