Operation Manual

development and is now used in the digital world of computing to create a change or reversal of
color (Figure 146 and Figure 147). Clicking on the Solarization icon opens the Solarization
dialog, where you can define the threshold value for solarization. Entering a Threshold value
above 70% reverses the color values (center picture in Figure 146). Selecting the Invert option
causes all the colors to be inverted (right picture in Figure 146).
Aging graphic filter
Aging creates a look that resembles photographs developed in the early days of photography. All
pixels are set to their gray values and then the green and blue color channels are reduced by the
amount specified in the Aging dialog. Red color channel is not changed (Figure 148 and Figure
149). Clicking on the Aging icon opens the Aging dialog (Figure 149), where you can define
the Aging degree and create an old look for your graphic as shown in the right picture in Figure
148.
Figure 148: Aging graphic filter
Figure 149: Aging dialog
Figure 150: Posterize graphic filter
Chapter 6 Editing Pictures 127