Abstract
Digital hologram generated by a computer calculation is one of the most expensive contents and its usage is being expanded. Thus, it is highly necessary to protect the ownership of digital hologram. In this paper a spatial-domain and a frequency-domain electronic watermarking schemes were proposed. The spatial-domain scheme was only to compare the results to the ones from frequency-domain scheme and the frequency-domain scheme used 2-dimensional mallat-tree discrete wavelet transform. Both of them showed very high imperceptibility and quite high robustness against the attacks. Especially the MDWT-domain scheme was very high robustness such that the error ratio at the worst case was only 3%. Thus, we expect that it is used as a good watermarking scheme of digital hologram with high performance. But the spatial-domain scheme was turned out to be useless when data compression process is necessary after watermarking.
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© 2006 Springer-Verlag Berlin Heidelberg
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Choi, HJ., Seo, YH., Yoo, JS., Kim, DW. (2006). An Electronic Watermarking Technique for Digital Holograms in a DWT Domain. In: Chang, LW., Lie, WN. (eds) Advances in Image and Video Technology. PSIVT 2006. Lecture Notes in Computer Science, vol 4319. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11949534_101
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DOI: https://doi.org/10.1007/11949534_101
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-68297-4
Online ISBN: 978-3-540-68298-1
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