Title :
DWT (discrete wavelet transform) based watermark system
Author :
Sang-Heun Oh ; Sung-Wook Park ; Byung-Jun Kim
Author_Institution :
SAMSUNG Electron. Digital Media R&D Center, Suwon, South Korea
Abstract :
In this paper a DWT (discrete wavelet transform) based watermarking system is proposed. The proposed embedding system changes coefficients. The extracting system rebuilds thresholds according to various attacks and decides a watermark bit from the least distorted coefficient. A new measure to detect the uniqueness of watermark is also proposed.
Keywords :
copy protection; data encapsulation; discrete wavelet transforms; image coding; security of data; DWT; attacks; discrete wavelet transform; embedding system; extracting system; image coding; least distorted coefficient; thresholds; watermark uniqueness; watermarking; Data mining; Discrete wavelet transforms; Distortion measurement; Information technology; Pixel; Research and development; Robustness; Watermarking; Wavelet coefficients; Wavelet transforms;
Conference_Titel :
Consumer Electronics, 2002. ICCE. 2002 Digest of Technical Papers. International Conference on
Conference_Location :
Los Angeles, CA, USA
Print_ISBN :
0-7803-7300-6
DOI :
10.1109/ICCE.2002.1013987
