| Summary: | 碩士 === 國立臺灣海洋大學 === 電機工程學系 === 105 === In this thesis, chaotic logic or Bernoulli maps, a two-dimensional block interleaver scheme, and the Hilbert-Huang transform based empirical mode decomposition method are integrated to proposed partial intrinsic mode functions (IMF)-based visual encryption, which is applied to Berardius Baird clicks. The initial parameters of chaotic logic or Bernoulli maps are the energy ratios of the ith IMF to the refereed total energy of Berardius Baird clicks. The partial encryption performances of one, two, three, and four, and all IMFs, are demonstrated. Five Berardius Baird clicks are illustrated to verify the proposed partial IMF-based visual encryption mechanism, and the Root mean squared errors and The Pearson's correlation coefficients are analyzed for original Berardius Baird clicks and the Berardius Baird clicks with correction encryption. Simulation results show that the proposed partial IMF-based visual encryption exhibits excellent performance.
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