A ROBUST METHOD FOR FINGERPRINTING DIGITAL IMAGES  

作　　者：Saad Amer 

机构地区：[1]Info. Security Center, Beijing Univ. of Posts and Telecom., Beijing 100876

出　　处：《Journal of Electronics(China)》2001年第3期193-203,共11页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation(No.69882002,69772035);National "863" Programme(863-ZT05-2)

摘　　要：In this paper, a method to fingerprint digital images is proposed, and different watermarked copies with different identification string are made. After determining the number of the customers and the length of the watermark string, this method chooses some values inside the digital image using a characteristic function, and adds watermarks to these values in a way that can protect the product against the attacks happened by comparing two fingerprinted copies.The watermarks are a string of binary numbers -1s and 1s. Every customer will be distinguished by a series of 1s and -1s generated by a pseudo-random generator. The owner of the image can determine the number of customers and the length of the string as well as this method will add another watermarking values to watermark string to protect the product.In this paper, a method to fingerprint digital images is proposed, and different watermarked copies with different identification string are made. After determining the number of the customers and the length of the watermark string, this method chooses some values inside the digital image using a characteristic function, and adds watermarks to these values in a way that can protect the product against the attacks happened by comparing two fingerprinted copies. The watermarks are a string of binary numbers -1s and 1s. Every customer will be distinguished by a series of 1s and -1s generated by a pseudo-random generator. The owner of the image can determine the number of customers and the length of the string as well as this method will add another watermarking values to watermark string to protect the product.

关 键 词：SECURITY Fingerprinting IMAGES DIGITAL WATERMARKING COPYRIGHT PROTECTION 

分 类 号：TN[电子电信]