A novel zero-watermarking algorithm based on DWT and edge detection

Author

Zhang, Li ; Cai, Peng ; Tian, Xiaolin ; Xia, Shaowei

Author_Institution

Fac. of Inf. Technol., Macau Univ. of Sci. & Technol., Macau, China

Volume

2

fYear

2011

fDate

15-17 Oct. 2011

Firstpage

1016

Lastpage

1020

Abstract

This paper introduces a novel zero-watermarking algorithm based on DWT and edge detection. According to the image´s low frequency component, the algorithm extracts the interested main information from an original image after two-level DWT and then transfers this information to a matrix by a coding method. Do the XOR operation to this matrix with the watermark image to get a pseudo-watermark and achieve the aim of information hiding. On account of the property of zero-watermarking, technically, this algorithm has overall good robustness and large watermark capacity. Such property had also been verified by experiments.

Keywords

data encapsulation; discrete wavelet transforms; edge detection; feature extraction; image coding; image watermarking; XOR operation; coding method; edge detection; image watermarking; information extraction; information hiding; pseudowatermark; two-level DWT; zero-watermarking algorithm; Algorithm design and analysis; Discrete wavelet transforms; Image coding; Image edge detection; Matrix converters; Signal processing algorithms; Watermarking; DWT; Edge Detection; Information Hiding; Zero-watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Image and Signal Processing (CISP), 2011 4th International Congress on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-9304-3

Type

conf

DOI

10.1109/CISP.2011.6100325

Filename

6100325