【作者】 齐强春；

【导师】 洪景新；

【作者基本信息】 厦门大学 ， 电子与通信工程， 2014， 硕士

【摘要】 随着互联网技术的快速发展,信息安全成为越来越不容忽视的问题。近年来,信息隐写作为新型的安全通信技术,由于其独特的隐蔽性,逐渐受到了广泛的研究和应用。目前,基于数字图像的信息隐写技术已经得到了深入的研究,隐写检测技术也得到了广泛的发展。但大多数的隐写检测技术是特定隐写检测,只能针对一种或一类隐写算法进行检测,同时又受隐写载体的图像格式不同的限制,特定隐写检测技术没办法满足多种隐写算法检测、分析的科学研究和应用实践需求。因此,搭建一个多图像格式、多隐写算法检测平台具有很重要的应用意义。本文通过深入研究目前数字图像隐写及检测技术,分析实际应用需求,研究设计了新型的数字图像隐写检测系统。该检测系统,能够支持对以BMP图像或JPEG图像为载体的隐写检测,同时,能够实现对目前主流的九种隐写算法的检测,克服了现有的隐写检测软件只支持单一图像格式载体,可检测隐写算法不足的问题。通过多种检测实验,本文设计的检测系统能够实现对以BMP、JPEG为载体,包括LSB替换、LSB匹配、MLSB、JSteg、F5、OutGuess、MB1、MB2、JPhide在内的九种隐写算法的检测,并且基本能够实现较理想的检测效果,随着嵌入率的增高,检测效果更好,具有实用性和实践应用意义。更多还原

【Abstract】 With the rapid development of Internet technology, the importance of the information security issues can’t be ignored more and more.In recent years, as the new communications technology, information steganography has gradually been widely studied and applied because of its unique concealment.Currently, steganography techniques based on digital image have been extensively studied, and steganography detection techniques have been widely developed. However, most of steganography detection technology is based on specific detectionthat is to say, only one or a class of steganographic algorithm is used for detection.In the meanwhile, with the limitation of different image format of steganographic carrier,specific steganography detection technology cannot meet a variety of steganography detection, analytical scientific research and applied practice.In this paper, current digital image steganography detection techniques are deeply studied, and the existing problems of actual application requirements and current steganography detection software are analyzed. A novel digital image steganography detection system is designed in this paper. In this detection system, steganography detection using BMP or JPEG images is supported. Simultaneously, thenine current main stream steganography algorithms are available to be detected, which is able to overcome the problems of single image format carrier supporting and lack of detect steganographic algorithms in existing steganography detection software. BMP, JPEG as the carrier.Through a variety of experiments, this system can detect nine steganography algorithm, including LSB replacement, LSB matching MLSB, JSteg, F5, OutGuess, MB1, MB2, JPhide. With the increasingof the embedding rate, the detection result will bebetter, It has practical application values and practical significant.更多还原