文件名称：Speech Based Watermarking for Digital Images
文件大小：1.58MB
文件格式：PDF
更新时间：2013-07-13 15:32:18
Watermarking; copy right Protection; Biometric
This paper presents a novel scheme of watermarking of digital images for copyright protection and authentication. In this paper we proposed a method of embedding owner’s speech signal. Speech being a biometric data, the watermark signal in this method is expected to be more meaningful and has closer correlation with copyright holder. The main issue of concern here is the capacity because the speech data has large number of samples. Linear predictive coding is used to encode the audio data. Here, speech samples are imperceptibly inserted using spread spectrum technique into the mid frequency band of wavelet transform of image which makes it robust to lossy compression. Applications for such a speechhiding scheme include copy protection, authentication and covert communication.