2004
DOI: 10.1117/12.558187
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Digital watermarking using two-dimensional FM waveforms

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“…For high payload applications, however, this approach is not effective. Use of the chirp is part of a broader approach to watermarking using time-frequency representations [5][6][7][8][9]. For example, [5] and [8] utilize bilinear time-frequency transformations and the watermark is embedded in the joint time-frequency domain.…”
Section: Introductionmentioning
confidence: 99%
“…For high payload applications, however, this approach is not effective. Use of the chirp is part of a broader approach to watermarking using time-frequency representations [5][6][7][8][9]. For example, [5] and [8] utilize bilinear time-frequency transformations and the watermark is embedded in the joint time-frequency domain.…”
Section: Introductionmentioning
confidence: 99%