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- W2293721189 abstract "A perceptually adaptive scheme for image watermarking by use of the bit inverting transformation is developed. The transformation can change a signal level by both inverting a specified bit and altering the level at random within a limited range. From the analysis of the transformation properties, a perceptual model with two kinds of measures of level distortion is assumed for evaluating subjective visual qualities of the transformed image. Using the measurements of visual quality by the subjective evaluations of human observers, the subjective quality measure based on the perceptual model is derived by multiple linear regression analysis. This measure can estimate a subjective visual quality from the two distortion measurements of the transformed image. In the adaptively watermarking scheme, by using the subjective quality measure, the embedding parameter is adaptively determined every image block so that a desired visual quality can be achieved on the resulting watermarked image. The simulation results demonstrate the performance of the subjective quality measure and the efficiency of the adaptively watermarking scheme." @default.
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- W2293721189 date "2011-01-01" @default.
- W2293721189 modified "2023-09-28" @default.
- W2293721189 title "A Perceptually Adaptive Scheme for Image Watermarking by Bit Inverting Transformation" @default.
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