针对现有的图像复制遮盖篡改检测算法需要某些先验信息、对后处理操作失效且计算量大等问题, 借鉴图像匹配技术中的SIFT(scale invariant feature transform)特征匹配算法,首次提出将其用于检测复制 遮盖的篡改操作。 -Cover the existing image copy for tamper detection algorithm needs some prior information on the calculation of post-proc

提出一种新的基于图像特征聚类的自嵌入水印算法( CCSW) ，用于图像内容的认证和恢复．-In this paper，we present a novel self-embedded watermarking algorithm based on characteristic clustering ( CCSW) for image tamper detection and recovery．

implementation this paper in matlab Dual watermark for image tamper detection and recovery http://www.sciencedirect.com/science/article/pii/S003132030800174X