Blind Digital Watermarking Algorithm Based on Fountain Code and CDMA Spread Spectrum
[1]Zhang Weidang,Wu Lin.Blind Digital Watermarking Algorithm Based on Fountain Code and CDMA Spread Spectrum[J].Journal of Zhengzhou University (Engineering Science),2017,38(06):23-28.[doi:10.13705/j.issn.1671-6833.2017.06.005]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
38卷
Number of periods:
2017 06
Page number:
23-28
Column:
Public date:
2017-11-20
- Title:
- Blind Digital Watermarking Algorithm Based on Fountain Code and CDMA Spread Spectrum
- Keywords:
- digital watermarking; CDMA; fountain code; DCT; robustness
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2017.06.005
- Abstract:
- In order to improve the robusthness and watermark capacity of digital image watermarking system, this paper presented a digital image watermarking algorithm based on fountain code and CDMA spread spectrum techniques. LT code for the purpose of encoding the original watermark was adopted, and then CDMA spread spectrum techniques was used to generate the encode watermark information. The encoded watermark information was embedded in the DCT domain of the carrier image. Blind recovery of the embedded data was achieved by using the character of cross-correlation function the orthogonal spread spectrum code. The error watermark bits would be deleted by setting decision threshold and then using the correct watermark bits to decode, which could impove the robustness of digital watermarking system. The result showed the scheme proposed in this paper coula embed larger quantities of information and raise robustuness, especially it was robust against JPEC compression, noise and cropping attacks.
- References:
- -
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