一种基于混沌映射的音视频水印互认证方案

多媒体认证技术用于证明所接收到多媒体内容的原始性并检测恶意的内容改动.在Lin Chingyung定理和Fridrich的二维混沌映射理论的基础上,提出了一种新的音视频互认证方案,与前人方法不同的是,它采取了单水印认证两种媒体的方案(音视频),所提方案能承受适当的MPEG压缩,同时能检测恶意的内容改动.由于水印仅被加入到音频(或视频)数据,能避免视频帧(或音频块)的失真,所以此方案可应用于一些特殊的场合,比如军事和医疗.

An Audio/Video Watermarking Interactive Authentication Based on Chaotic Maps

Multimedia authentication techniques are used to prove the originality of received multimedia content and to detect malicious tampering.In this paper,we extended Lin's theorem and utilize Fridrich's two-dimensional chaotic maps to propose a new video/audio verify scheme.Different from most previous works,our scheme used single watermarking authenticating two kinds of combined multimedia.This method accepts appropriate MPEG compression while detecting malicious content tampering.Because the watermark has just only been adding into video or audio signal,there is no distortion in audio block or video frame.And so this method can be also used for some special purpose,such as military or medical.