A Blind Digital Image Watermarking Method Based on the Dual-Tree Complex Discrete Wavelet Transform and Interval Arithmetic

2012 ◽  
pp. 437-449 ◽  
Author(s):  
Teruya Minamoto ◽  
Ryuji Ohura
Keyword(s):  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Digital Image ◽  
Interval Arithmetic ◽  
Image Watermarking ◽  
Discrete Wavelet ◽  
Digital Image Watermarking

A DIGITAL IMAGE WATERMARKING FOR AUTHENTICATION BASED ON THE DUAL-TREE COMPLEX DISCRETE WAVELET TRANSFORM AND INTERVAL ARITHMETIC

2013 ◽  
Vol 11 (04) ◽  
pp. 1360005 ◽  
Author(s):  
TERUYA MINAMOTO ◽  
RYUJI OHURA
Keyword(s):  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Digital Image ◽  
Interval Arithmetic ◽  
Image Watermarking ◽  
Experimental Results ◽  
Discrete Wavelet ◽  
Digital Image Watermarking ◽  
Test Image ◽  
High Quality

We propose a new digital image watermarking method for authentication based on the dual-tree complex discrete wavelet transform (DT-CDWT) and interval arithmetic (IA). This method is a kind of content-based watermarking, because it generates a watermark from the host image and authenticates the test image by comparing two types of watermarks constructed using the test image. We describe our watermarking and authentication procedure in detail and present experimental results demonstrating that our method produces high-quality watermarked images and can locate the areas that have been tampered with.

scholarly journals A Robust Algorithm of Digital Image Watermarking Based on Discrete Wavelet Transform

2011 ◽  
pp. 58-63
Author(s):  
Shital Gupta ◽  
SANJEEV JAIN
Keyword(s):  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Digital Image ◽  
Image Watermarking ◽  
Theoretical Models ◽  
Discrete Wavelet ◽  
Blind Watermarking ◽  
Digital Image Watermarking ◽  
Robust Algorithm ◽  
Frequency Spread

In this paper, a robust algorithm of digital image watermarking based on discrete wavelet transform is introduced It uses blind watermarking technique. Digital image watermarking is one such technology that has been developed to protect digital images from illegal manipulations. In particular, digital image watermarking algorithms which are based on the discrete wavelet transform have been widely recognized to be more prevalent than others. This is due to the wavelets' excellent spatial localization, frequency spread, and multi-resolution characteristics, which are similar to the theoretical models of the human visual system.

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