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Frontiers of Information Technology & Electronic Engineering
ISSN 2095-9184 (print), ISSN 2095-9230 (online)
2020 Vol.21 No.6 P.880-883
Discrete fractional watermark technique
Abstract: The fractional logistic map holds rich dynamics and is adopted to generate chaotic series. A watermark image is then encrypted and inserted into the original images. Since the encryption image takes the fractional order within (0, 1], it increases the key space and becomes difficult to attack. This study provides a robust watermark method in the protection of the copyright of hardware, images, and other electronic files.
Key words: Discrete fractional calculus, Image encryption, Watermark
1内江师范学院计算机学院，数据恢复四川省重点实验室，中国内江市，641100
2内江师范学院数学与信息科学学院，数据恢复四川省重点实验室，中国内江市，641100
3詹卡亚大学数学系，土耳其安卡拉，06530
4空间科学研究所，罗马尼亚马格勒布加勒斯，011254
摘要：分数阶logistic映射具有丰富的动力学行为，用于产生混沌序列。基于分数阶logistic映射进行图像加密，嵌入原始图像，获得水印图像。在图像加密中，分数阶阶数介于0、1之间，被用作加密密码，提升了图像加密时的密码空间，加大了黑客攻击难度。离散分数阶水印技术提供了一种有效保护硬件、图像及其他电子文件的方法。
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DOI:
10.1631/FITEE.2000133
CLC number:
TP391.4
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On-line Access:
2020-06-12
Received:
2020-03-29
Revision Accepted:
2020-05-05
Crosschecked:
2020-05-20