【摘要】 对数字图像取证技术进行介绍,重点对数字图图像被动取证的现有技术进行综述。根据数字图像被动取证技术中不同算法所选用的特征量各不相同,将现有的技术方法分为3大类:基于图像内容的被动取证、基于成像过程的被动取证、基于物理原理的被动取证。分别介绍了3大类方法的特征及其所属各种典型算法,并对每一类中的各种典型算法进行分析比较和总结。最后提出了数字图像被动取证的不足之处和未来的发展方向。更多还原

【Abstract】 The techniques of blind digital image forensics are reviewed and divided into three categories: techniques based on image contents,techniques based on image devices,techniques based on the physical perspective rules.The different characteristics of the three categories and their typical algorithms are introduced.The latest related work is analyzed,and unresolved problems are discussed and some ways of future developing are predicted.更多还原