Optical image watermarking based on orbital angular momentum holography

• Published in: Chinese physics B Vol. 33; no. 12; pp. 124202 - 311
• Main Authors: Zhu, Jialong, Ji, Jiaying, Wang, Le, Zhao, Shengmei
• Format: Journal Article
• Language: English
• Published: Chinese Physical Society and IOP Publishing Ltd 01.12.2024
• Subjects: discrete wavelet transformation; holography; optical image watermarking; orbital angular momentum; discrete wavelet transforma-tion; holography; orbital angular momentum; optical image watermarking

We propose an optical image watermarking scheme based on orbital angular momentum (OAM) holography. Multiple topological charges (TCs, l ) of OAM, as multiple cryptographic sub-keys, are embedded into the host image along with the watermark information. Moreover, the Arnold transformation is employe...