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

Figure 14

The flipped font binary image using our proposed flipping strategy: (a) flipping 300 pixels; (b) flipping 600 pixels; (c) flipping 900 pixels; (d) flipping 1200 pixels; (e) flipping 1500 pixels; (f) flipping 1800 pixels; (g) flipping 2100 pixels; (h) flipping 2400 pixels.

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