A novel robust image watermarking algorithm based on polar decomposition and image geometric correction.

Autor:	Zhou, Qidong, Shen, Shuyuan, Yu, Songsen, Duan, Delin, Yuan, Yibo, Lv, Haojie, Lin, Huanjie
Předmět:	DIGITAL image watermarking HADAMARD matrices DIGITAL watermarking MATRIX decomposition WAVELET transforms
Zdroj:	Visual Computer; May2024, Vol. 40 Issue 5, p3303-3330, 28p
Abstrakt:	Nowadays, many image watermarking algorithms based on matrix decomposition have been proposed. In this paper, the properties of polar decomposition in the field of image watermarking is found, that is, embedding the watermark information into diagonal elements of the semi-positive definite matrix can improve the invisibility of the watermark. However, the diagonal elements have poor robustness. Based on this, lifting wavelet transform, which is the second generation wavelet transform, and Hadamard transform are used to improve the robustness of watermarking. In addition, image geometric correction algorithms are also combined to resist geometric attacks. The robustness and comparison experiments show that the proposed algorithm is superior to some state-of-the-art algorithms in some attacks. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Full text from SpringerLink