A Fragile Watermarking Algorithm for Hologram Authentication

作者：Cheng Chau Jern^*; Hwang Wen Jyi; Zeng Han Yi; Lin Yu Chih

来源：Journal of Display Technology, 2014, 10(4): 263-271.

DOI：10.1109/JDT.2013.2295619

• 3D display
• hologram
• image authentication
• watermarking

A fragile watermarking algorithm for hologram authentication is presented in this paper. In the proposed algorithm, thewatermark is embedded in the discrete cosine transform(DCT) domain of a hologram. The watermarked hologram is stored in spatial domain with finite precision level. By enhancing the precision for storing the watermarked hologram pixels, the distortion produced by the proposed watermarking scheme can be lowered. While providing high perceptual transparency, the proposed algorithm also attains high performance detection to delivery errors andmalicious tampering. Experimental results reveal that the proposed algorithmcan be used as an effective filter for blocking polluted or tampered holograms from 3D magnitude and/ or phase reconstruction.

• 出版日期2014-4