A Modified Feature Based Image Watermarking Scheme in NSCT Domain

Author

Yang, Liu ; Guo, Baolong ; Lv, Jianmin

Author_Institution

Sch. of Electro-Mech. Eng., Xidian Univ., Xi´´an, China

Volume

1

fYear

2009

fDate

18-20 Aug. 2009

Firstpage

67

Lastpage

70

Abstract

In this article, we present a modified robust image watermarking scheme based on the scale-invariant feature transform (SIFT). The watermark is embedded into some local regions extracted from the original image. During embedding, the initial region is divided into some cirque sub-regions with the same area, and each watermark bit is embedded into one sub-region. Besides, it is embedded in the non-subsampled contourlet transform (NSCT) domain to enhance watermark robustness. Experimental results have demonstrated the efficiency of the proposed scheme.

Keywords

feature extraction; image coding; transforms; watermarking; NSCT domain; SIFT; homocentric cirque subregion; image watermarking scheme; local region feature extraction; nonsubsampled contourlet transform; scale-invariant feature transform; Filtering; Image coding; Image processing; Information security; Protection; Quantization; Robustness; Shape; Signal processing algorithms; Watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Assurance and Security, 2009. IAS '09. Fifth International Conference on

Conference_Location

Xi´an

Print_ISBN

978-0-7695-3744-3

Type

conf

DOI

10.1109/IAS.2009.339

Filename

5283353