Title :
A Secure Quantization-Based Watermarking Scheme Using An Improved Statistical Model in the Wavelet Domain
Author :
Rezazadeh, Soroosh ; Rafiei, Ali
Author_Institution :
Shiraz Univ., Shiraz
Abstract :
In this paper, we have proposed a secure semi-fragile watermarking technique for content authentication of digital images. A binary image is encrypted in an efficient way and then embedded as the watermark for tamper detection. The watermark is embedded by applying a quantization index modulation process on Euclidean norm of singular values of blocks in the wavelet domain. To avoid visual degradation of watermarked image, we have enhanced a model to take into consideration blocks statistics of the host image. Experimental results are presented for well known images to demonstrate effectiveness of our method.
Keywords :
cryptography; message authentication; quantisation (signal); statistical analysis; watermarking; wavelet transforms; Euclidean norm; binary image; content authentication; digital images; encryption; quantization index modulation process; quantization-based watermarking scheme; semifragile watermarking technique; tamper detection; wavelet domain; Authentication; Cryptography; Discrete cosine transforms; Discrete wavelet transforms; Image coding; Quantization; Statistics; Transform coding; Watermarking; Wavelet domain;
Conference_Titel :
Information and Communication Technology, 2007. ICICT '07. International Conference on
Conference_Location :
Dhaka
Print_ISBN :
984-32-3394-8
DOI :
10.1109/ICICT.2007.375385
