A New Pixels Flipping Method for Huge Watermarking Capacity of the Invoice Font Image

Figure 13

Denoising using the proposed based on gravity center and chaos degree: (a) the font binary image after flipping 900 pixels; (b) the font binary image after flipping 1200 pixels; (c) the font binary image after denoising which flipped 900 pixels; (d) the font binary image after denoising which flipped 1200 pixels.

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(b)

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