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

Figure 11

The application example of the proposed denoising method: (a) the original font binary image, black pixels count is 6335; (b) the position of the pixels flipping based on pixel score; the red points denote flipping position, flipping 500 pixles; (c) the image after pixels flipping; (d) the font binary image after denoising based on gravity center and chaos degree.

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