(北京郵電大學計算機學院，北京 100876)
摘 要 對數字圖像取證技術及其研究現狀進行介紹，將數字圖像取證研究領域按照其研究角度劃分為圖像來源認證（源識別）和圖像篡改取證（篡改檢測）兩個方面，為現有技術進行綜述。針對數字圖像來源認證，將現有的技術方法按實現的機理不同分為4 大類：基于鏡頭畸變的方法、基于像素缺陷的方法、基于模式噪聲的方法、基于CFA 插值的方法。針對圖像篡改取證分別介紹了3 大類方法的特征及其所屬各種典型算法。
關鍵詞 圖像取證; 被動取證; 篡改檢測; 幾何透視; 真實性鑒定
A Survey on the Method of Digital Image Forensics
Ming LU,  Shaozhang NIU,  Yanli HUANG
(School of Computer, Beijing University of Posts and Telecommunications, Beijing, China, 100876)

Abstract  Digital image forensics technology and research status are introduced, the field of digital image forensics research according to the different research direction is divided into the two aspects: the image authentication source (source) and the image tamper evidence (tamper detection). For the existing technology was summarized. The implementation mechanism for different methods of digital image authentication technology, the current method is divided into 4 categories: the method based on lens distortion Based, the method based on pixel defect, the method based on the pattern noise, the method based CFA interpolation. For image tamper evidence respectively introduces the characteristics of 3 kinds of methods and the typical algorithm.
Key words Image forensics; passive forensics; tamper detection; perspective geometry; authenticity identification

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