DocumentCode :
3478090
Title :
Color Image Copyright Protection Digital Watermarking Algorithm Based on DWT & DCT
Author :
Zhao, Mingwei ; Dang, Yanzhong
Author_Institution :
Inst. of Syst. Eng., Dalian Univ. of Technol., Dalian
fYear :
2008
fDate :
12-14 Oct. 2008
Firstpage :
1
Lastpage :
4
Abstract :
This paper combines the visual characteristics of low frequency sub-image of DWT and the ability of DCT to remove correlation between DWT coefficients. By doing this, this paper improves a blind DCT watermarking algorithm to get a new color image digital watermarking schema based on DWT and DCT. The schema applies a self-adapted color component choosing strategy; Preprocesses the watermark by Logistic chaotic encryption; Applies the DCT to low frequency sub-image of DWT to get rid of coefficient correlation; In addition to that this schema extract strategy is blind by using sub-sampling technique. According to simulation results, this watermarking schema is robust under common attacks especially the compression attacks.
Keywords :
discrete cosine transforms; discrete wavelet transforms; image colour analysis; watermarking; blind DCT watermarking algorithm; color image copyright protection; color image digital watermarking; discrete cosine transforms; discrete wavelet transforms; logistic chaotic encryption; self-adapted color component; subsampling technique; Chaos; Color; Copyright protection; Cryptography; Discrete cosine transforms; Discrete wavelet transforms; Frequency; Logistics; Robustness; Watermarking;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
Type :
conf
DOI :
10.1109/WiCom.2008.2913
Filename :
4681102
Link To Document :
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