Fig.4-34 Bitmap parameters
4.9.2. Invert Reversal
Invert: takes the opposite color value for each point of the current image, as
shown in Fig. 4-35.
Reversal: The color value of each point in the current picture is reversed, and
the formula adopted is PX new = 255 – PX old, as shown in Figure 4-35.
Fig. 4-35 Inverted Reversal Image
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