标题：Optical image watermarking based on singular value decomposition ghost imaging and lifting wavelet transform
作者：Wang, Shiqing; Meng, Xiangfeng; Yin, Yongkai; Wang, Yurong; Yang, Xiulun; Zhang, Xue; Peng, Xiang; He, Wenqi; Dong, Guoyan; Chen, Ho 更多 作者机构：[Wang, Shiqing; Meng, Xiangfeng; Yin, Yongkai; Wang, Yurong; Yang, Xiulun; Zhang, Xue] Shandong Univ, Sch Informat Sci & Engn, Dept Opt, Jinan 250100, 更多
通讯作者：Meng, Xiangfeng;Meng, XF;Meng, XF
通讯作者地址：[Meng, XF]Shandong Univ, Sch Informat Sci & Engn, Dept Opt, Jinan 250100, Shandong, Peoples R China;[Meng, XF]Shandong Univ, Shandong Prov Key Lab Las 更多
来源：OPTICS AND LASERS IN ENGINEERING
关键词：Image encryption and hiding; Ghost imaging; Digital image processing
摘要：An optical image watermarking method based on singular value decomposition ghost imaging (SVDGI) and a blind watermarking algorithm is proposed. The watermark image is first encrypted by an SVDGI system, then the encrypted watermark is embedded in the host image with the help of the watermark algorithm, which uses the block discrete cosine transform (DCT) and integer lifting wavelet transform (LWT). The proposed watermarking algorithm has good imperceptibility and robustness, and no original host image is needed when extracting the watermark. SVDGI provides a new reconstruction method in ghost imaging (GI) by modifying the measurement matrix with the help of singular value decomposition, which carries out the reconstruction process in less time and at higher quality. The measurement matrix composes a secret key, and only with this key can authorized users decrypt and reconstruct the original watermark image. Both optical experiments and numerical simulations validate the feasibility of the proposed method.