Title :
Researches on Digital Image Watermarking
Author :
Dinghui, Zhang ; Haixia, Dong ; Chao, Zhou
Author_Institution :
Univ. of Shanghai for Sci. & Technol., Shanghai
Abstract :
To meet well the requirements of transparence, robustness, and security of digital image watermarks at one time, the scrambling technique of digital images and discrete wavelet transform have been organically combined, the watermarking technique of digital images in wavelet transform domain has been seriously studied according to the basic characteristic of human visual system. The performances of the embedding and extracting algorithm of watermarking images are mainly discussed in two cases, namely the watermarked image resists the disturbing of Gaussian white noise and being cropped. To successfully extract the watermarking image from the watermarked image disturbed and attacked, some effective measures should be taken for the embedding and extracting algorithm of the watermarking image, and the preprocessing of the watermarked image disturbed and attacked.
Keywords :
Gaussian noise; discrete wavelet transforms; feature extraction; image coding; security of data; watermarking; white noise; Gaussian white noise; digital image watermark security; discrete wavelet transform; extracting algorithm; human visual system; scrambling technique; Digital images; Discrete wavelet transforms; Humans; Resists; Robustness; Security; Visual system; Watermarking; Wavelet domain; White noise; Digital image watermarking; discrete wavelet transform; image scrambling; robustness; transparence;
Conference_Titel :
Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-1136-8
Electronic_ISBN :
978-1-4244-1136-8
DOI :
10.1109/ICEMI.2007.4350805
