Kuan-Ming Li

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Visible watermarking schemes are among the techniques being used to protect intellectual property rights (IPRs). To provide authorized users better visibility, a new research issue called removable visible wa-termarking has been proposed recently. In this paper, an enhancement of Huang and Tang's scheme is proposed to achieve removability. Authorized users(More)
In this paper, an overlapped Orthogonal Frequency Division Multiplexing (OFDM) named as Fast-OFDM system and an overlapping multi-carrier direct-sequence code division multiple access (MC-DS-CDMA) scheme are introduced. The effect of the overlapping between sub-carriers, of Fast-OFDM and MC-CDMA with binary phase shift keying (BPSK), on the performance in(More)
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