Image information hiding based on CGH of phase-only interference holography

摘要：

An image information hiding technique based on computer-generated hologram (CGH) of phase-only interference holography is proposed to significantly improve the traditional method. The importance of the phase in transformation is analyzed. Compared with the traditional method, the phase-only wave instead of complex function of the traditional Fouriertransformed object wave, which then is used to interfere with the reference wave and a high contrast CGH is obtained. The hologram is encrypted by security key and is superposed on discrete-cosinetransform domain of the host image. In the detection stage, the original information is extracted based on optical or digital inverse Fourier transform with the security key. Theoretical analysis and simulation results show that the improved method received better robustness than traditional information hiding technology based on CGH.

关键词： information optics information hiding phase-only computer-generated hologram

作者: Da-Qing Chen Ji-Hua Gu Zhi Tao

作者单位: Soochow University Physics Department Suzhou, China

会议类型: 国际会议

会议名称: Third International Symposium on Information Science and Engineering(第三届信息科学与工程国际会议 ISISE 2010)

会议地点: 上海

会议语种:英文

页码: 197-201

在线出版日期: 2010-12-24（万方平台首次上网日期，不代表论文的发表时间）