Phase Watermarking Algorithm using Hybrid Multi-Polarity Hadamard Transform

被引：0
|
作者：
Bogdan J. Falkowski
机构：
[1] Nanyang Technological University,School of Electrical & Electronic Engineering
来源：
Journal of Mathematical Imaging and Vision | 2008年 / 30卷
关键词：
Unified complex Hadamard transform; Multi-polarity complex Hadamard transform; Multi-polarity Walsh-Hadamard transform; Phase watermarking; Spectral techniques;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, a robust phase watermarking algorithm for still images is presented where the watermark information is conveyed in the phase spectrum in the transform domain. Phase watermarking algorithm that uses multi-polarity Walsh-Hadamard and Complex Hadamard transform is developed. The robustness of presented algorithm is investigated by its uniqueness, JPEG encoding, image resizing, dithering noise distortions, sharpening, cropping and successive watermarking.
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页码：13 / 21
页数：8
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