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- W1987447309 abstract "AbstractIn this paper, the authors present a digital watermarking method for still image. The hybrid method is based on the application of discrete wavelet transform (DWT), log-polar mapping (LPM) and phase correlation. To be robust against compression, the watermark is embedded in the discrete Fourier transform (DFT) magnitude of the low pass (LL) sub-band obtained by applying the DWT. Moreover, the inverse log-polar mapping (ILPM) approximation, of the positions chosen in the LPM domain of the low-pass sub-band DFT magnitude, is applied to determine where to insert the watermark to ensure the robustness against geometric transformations rotation, scaling and translation (RST). The phase correlation of the LPM of the original image and the LPM of the watermarked image, allows calculating the displacement caused by the geometric transformations (RST). The DWT is used to take advantage of the human visual system (HVS) characteristics and obtaining the optimal place for embedding the watermark, meanwhile th..." @default.
- W1987447309 created "2016-06-24" @default.
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- W1987447309 date "2013-01-01" @default.
- W1987447309 modified "2023-09-26" @default.
- W1987447309 title "WATERMARKING METHOD RESILIENT TO RST AND COMPRESSION BASED ON DWT, LPM AND PHASE CORRELATION" @default.
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- W1987447309 doi "https://doi.org/10.2316/journal.202.2013.1.202-3503" @default.
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