DocumentCode :
2608101
Title :
Secure spread spectrum watermarking for images, audio and video
Author :
Cox, Ingemar J. ; Kilian, Joe ; Leighton, Tom ; Shamoon, T.
Author_Institution :
NEC Res. Inst., Princeton, NJ, USA
Volume :
3
fYear :
1996
fDate :
16-19 Sep 1996
Firstpage :
243
Abstract :
We describe a digital watermarking method for use in audio, image, video and multimedia data. We argue that a watermark must be placed in perceptually significant components of a signal if it is to be robust to common signal distortions and malicious attack. However, it is well known that modification of these components can lead to perceptual degradation of the signal. To avoid this, we propose to insert a watermark into the spectral components of the data using techniques analogous to spread spectrum communications, hiding a narrow band signal in a wideband channel that is the data. The watermark is difficult for an attacker to remove, even when several individuals conspire together with independently watermarked copies of the data. It is also robust to common signal and geometric distortions such as digital-to-analog and analog-to-digital conversion, resampling, quantization, dithering, compression, rotation, translation, cropping and scaling. The same digital watermarking algorithm can be applied to all three media under consideration with only minor modifications, making it especially appropriate for multimedia products. Retrieval of the watermark unambiguously identifies the owner, and the watermark can be constructed to make counterfeiting almost impossible. We present experimental results to support these claims
Keywords :
audio coding; image coding; multimedia communication; security of data; spread spectrum communication; video coding; analog to digital conversion; audio coding; compression; copyright protection; cropping; digital to analog conversion; digital watermarking method; dithering; geometric distortion; image coding; malicious attack; multimedia data; narrow band signal; perceptual signal degradation; quantization; resampling; rotation; scaling; secure spread spectrum watermarking; signal distortions; spectral components; spread spectrum communications; translation; video coding; wideband channel; Analog-digital conversion; Degradation; Distortion; Narrowband; Quantization; Robustness; Spread spectrum communication; Videos; Watermarking; Wideband;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image Processing, 1996. Proceedings., International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-7803-3259-8
Type :
conf
DOI :
10.1109/ICIP.1996.560429
Filename :
560429
Link To Document :
بازگشت