๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Watermarking based on discrete fractional random transform

โœ Scribed by Jun Guo; Zhengjun Liu; Shutian Liu

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
362 KB
Volume
272
Category
Article
ISSN
0030-4018

No coin nor oath required. For personal study only.

โœฆ Synopsis

We propose a novel watermarking algorithm based on discrete fractional random transform. Random block selection and high amplitude selection techniques have been employed to improve the robustness of the watermarking algorithm. The imperceptibility of the watermarking is improved by adjusting the intensity of phase shift keying. Simulations under several conditions are given to verify the effectiveness of the proposed scheme. The results have shown the proposed algorithm is robust against the attacks of cropping, noising and low-pass filtering.

๐Ÿ“œ SIMILAR VOLUMES

Chaos-based discrete fractional Sine tra
Chaos-based discrete fractional Sine transform domain audio watermarking scheme
โœ Mingquan Fan; Hongxia Wang ๐Ÿ“‚ Article ๐Ÿ“… 2009 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 579 KB

## a b s t r a c t We proposed a novel discrete fractional Sine transform (DFRST) based watermarking scheme for audio data copyright protection. Chaotic sequences were adopted to improve the security of the proposed watermarking scheme. Simulations under various conditions were given to verify the

A discrete fractional random transform
A discrete fractional random transform
โœ Zhengjun Liu; Haifa Zhao; Shutian Liu ๐Ÿ“‚ Article ๐Ÿ“… 2005 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 746 KB

We propose a discrete fractional random transform based on a generalization of the discrete fractional Fourier transform with an intrinsic randomness. Such discrete fractional random transform inheres excellent mathematical properties of the fractional Fourier transform along with some fantastic fea

The discrete fractional random cosine an
The discrete fractional random cosine and sine transforms
โœ Zhengjun Liu; Qing Guo; Shutian Liu ๐Ÿ“‚ Article ๐Ÿ“… 2006 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 204 KB

Based on the discrete fractional random transform (DFRNT), we present the discrete fractional random cosine and sine transforms (DFRNCT and DFRNST). We demonstrate that the DFRNCT and DFRNST can be regarded as special kinds of DFRNT and thus their mathematical properties are inherited from the DFRNT