To use the Minimum and Maximum filters
1
Select one or more paint objects to adjust all the images. You
can select an area in one image in edit mode to adjust the selected
area only. If you dont make a selection, the entire image in edit
mode is affected. This command doesnt work with paint objects in
Black & White mode, and Indexed mode.
2
To maximize the light areas in an image, choose Image >
Filter > Other > Maximum and enter a radius from 1 to 16 pixels.
3
To minimize the light areas in an image, choose Image >
Filter > Other > Minimum and enter a radius from 1 to 16 pixels.
4
Turn on Preview to check the settings and then click OK.
Filling selections with color
The Image > Filter > Other > Fill command lets you quickly and uni-
formly fill a selection with the foreground or background color,
black, white, or gray. In addition, you can select an opacity level and
transfer mode for application of the color.
To fill a selection with a color
1
With an area of an image selected, choose Image > Filter >
Other > Fill. The Fill dialog box opens.
2
In the Use pop-up menu, choose a fill option. To make the
color appear transparent, set the Opacity level to less than 100%.
To use a mode effect, choose an option in the Mode pop-up menu.
3
Click OK to fill the selection.
Creating custom image filters
You can create your own special-effect and image-correcting filters
using the Custom command. You can also save custom filters and
use them in future Canvas documents.
Filters work with an image one pixel at a time. Using a mathematical
formula and the color values of pixels within a specified radius, fil-
ters assign each pixel a new color value. In a custom filter, you sup-
ply the numbers the filter uses to calculate the new color values.
The same filter can produce different effects in other images. To get
the most out of custom filters, spend time experimenting.