A novel robust and reversible color image watermarking algorithm with adaptive block selection

Author:

Cao Hongjiao1ORCID,Hu Fangxu1,Tian Xiaojie1,Xia Yu1,Su Qingtang1

Affiliation:

1. Ludong University

Abstract

Abstract In this paper, an adaptive robust and reversible watermarking algorithm is proposed which enables both copyright protection and integrity protection of the host image. Firstly, the host image is divided into non-overlapping sub-blocks, and a sub-block can be embedded with one watermark bit. During the watermark embedding process, the spatial domain computation and quantization methods of the DC component of the discrete Fourier transform (DFT) are derived and utilized, which can avoid unnecessary calculations and thus increase the efficiency of the algorithm, besides, the host image can be recovered by recording the pixel changes of embedded blocks. In addition, an adaptive selection method of embedded block designed for the aforesaid embedding method is proposed, which can select different suitable sub-blocks according to different host images, thus reducing the host image distortion caused by watermark embedding, whereupon, the quantization step can be selected with an appropriate bias to improve the robustness in the case of high invisibility. The experimental results show that the proposed algorithm not only has high invisibility, robustness, efficiency and security, but also the host image can be fully recovered from the watermarked image when there is no attack.

Publisher

Research Square Platform LLC

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3