Locating Steganographic Payloads by Combining WS Residuals and MAP Cover Estimator

摘要：

　　For the least significant bit(LSB)repalcement steganography,an improved cover estimation method is proposed by combining the weighted-stego(WS)residuals and the maximum a posteriori probability(MAP)cover estimator.First,the WS residuals are used to perform preliminary payload location.Next,the preliminary location result is applied to the improved MAP cover estimation method as a priori information so that a more accurate cover estimation algorithm will be obtained.Finally,the residual is computed to derive the final payload location result.Previous experiments have proved that the proposed method can improve the accuracy of payload location for the LSB replacement for either the spatial domain BMP image or the JPEG decompression image.It has a good robustness for different embedding rates.

关键词： steganalysis LSB replacement cover estimation payload location

作者: Tao Zhang Xiaomeng Yan

作者单位: Zhengzhou Information Science and Technology Institute Zhengzhou, China

会议类型: 国际会议

会议名称: The 2014 10th International Conference on Natural Computation (ICNC 2014) and the 2014 11th International Conference on Fuzzy Systems and Knowledge Discovery (FSKD 2014)(第十届自然计算和第十一届模糊系统与知识发现国际会议)

会议地点: 厦门

会议语种:英文

页码: 808-812

在线出版日期: 2014-08-19（万方平台首次上网日期，不代表论文的发表时间）