This paper presents a novel recoverable active signature technique of digital images(RADS) , according to the characteristics of image contents and the requirements of multimedia authentication.
本文根据多媒体信息的特点和多媒体认证的具体要求，提出了一种新的数字图象可恢复性主动签名方法（RADS）。
We consider the problem of digital watermarking for credibility authentication or tamper proofing of multimedia.
讨论了多媒体信息可靠性鉴定的数字水印方法，可靠性鉴定也称为篡改证明。
With the superiority in the field of the copyright protection in multimedia and the authentication of media, the technology of digital watermarking is becoming one of the hot-spots.
数字水印技术因其在多媒体版权保护、媒体认证技术方面所具有的优势，逐渐成为人们研究的热点之一。
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