GDL

Blind Wavelet Based Watermarking Technique for Image Authentication

2010
Journal from gdlhub / 2017-08-14 11:52:32
Oleh : Sasthavu Sujatha, Mohamed Sathik, IAJIT
Dibuat : 2012-06-23, dengan 1 file

Keyword : Digital watermarking, discrete wavelet transform, toeplitz matrix, image authentication, content based watermarking
Subjek : Blind Wavelet Based Watermarking Technique for Image Authentication
Url : http://www.ccis2k.org/iajit/PDF/vol.10,no.3/4-3211.pdf
Sumber pengambilan dokumen : Internet

The central idea of this paper is to propose an innovative watermarking scheme which embeds watermark signal


into the host image in order to authenticate it. In this novel technique, some pixels are randomly selected from original image,


so that all of them have a valid 3x3 neighborhoods. A binary sequence is constructed from those pixels by comparing them


against average values of neighborhoods. The binary sequence is then converted into a watermark pattern in the form of a


Toeplitz matrix to improve security of watermarking process and is then embedded within the host image. The operation of


embedding and extraction of watermark is done in high frequency domain of Discrete Wavelet Transform since small


modifications in this domain are not perceived by human eyes. This watermarking scheme deals with the extraction of the


watermark information in the absence of original image, hence the blind scheme is obtained. The proposed algorithm is more


secure and robust against most of the common image processing attacks. Finally computer simulations demonstrate that the


proposed method is better than the recent algorithm proposed in [5] by Lin Q. et al. in terms of Peak Signal to Noise Ratio

Deskripsi Alternatif :

The central idea of this paper is to propose an innovative watermarking scheme which embeds watermark signal


into the host image in order to authenticate it. In this novel technique, some pixels are randomly selected from original image,


so that all of them have a valid 3x3 neighborhoods. A binary sequence is constructed from those pixels by comparing them


against average values of neighborhoods. The binary sequence is then converted into a watermark pattern in the form of a


Toeplitz matrix to improve security of watermarking process and is then embedded within the host image. The operation of


embedding and extraction of watermark is done in high frequency domain of Discrete Wavelet Transform since small


modifications in this domain are not perceived by human eyes. This watermarking scheme deals with the extraction of the


watermark information in the absence of original image, hence the blind scheme is obtained. The proposed algorithm is more


secure and robust against most of the common image processing attacks. Finally computer simulations demonstrate that the


proposed method is better than the recent algorithm proposed in [5] by Lin Q. et al. in terms of Peak Signal to Noise Ratio

Beri Komentar ?#(0) | Bookmark

Properti	Nilai Properti
ID Publisher	gdlhub
Organisasi	IAJIT
Nama Kontak	Herti Yani, S.Kom
Alamat	Jln. Jenderal Sudirman
Kota	Jambi
Daerah	Jambi
Negara	Indonesia
Telepon	0741-35095
Fax	0741-35093
E-mail Administrator	elibrarystikom@gmail.com
E-mail CKO	elibrarystikom@gmail.com