Adobe ILLUSTRATOR 10 - Using Help | Contents | Index Back

Using Help | Contents | Index Back 239
Adobe Illustrator Help Working with Bitmap Images
Using Help | Contents | Index Back 239
2 Use the Color palette to paint the image with black, white, a process color, or a spot
color.
Using filters and filter effects
Some commands in Adobe Illustrator let you apply a special look to bitmap images.
For example, you can apply an impressionistic or mosaic look, apply lighting changes,
distort images, and produce many other interesting visual results.
Most of these commands are listed both under the Filter menu and the Effect menu,
letting you apply the command either as a filter or a filter effect. The versions of the
commands listed under Filter alter the structure of the objects to which they are applied.
You can apply these commands only to bitmap images.
The commands listed under Effect change only the appearance of the object without
changing the object’s underlying structure, letting you modify the settings of the
command or remove the command at any time. You can apply these commands to bitmap
images and also to vector objects, including paths and type. For more information,
see “
Using effects” on page 235.
Filters and filter effects don’t work on linked bitmap images. If you apply a filter or filter
effect to a linked bitmap image, it is applied to an embedded copy of the image instead of
to the original. For information on linked and embedded images, see “
Opening and
placing artwork” on page 33.
About plug-in filters
Adobe Illustrator supports plug-in filters and filter effects from Adobe products such as
Adobe Photoshop and from non-Adobe software developers. Once installed, most plug-in
filters and effects appear in the Filter and Effect menus and work the same as built-in
filters.
For information on installing and developing these plug-in modules, see “
Using plug-in
modules” on page 18. For information on effects, see “Using effects” on page 235.
Specifying raster effects settings
Illustrator uses a document’s raster effects settings whenever you apply a filter to a bitmap
image or apply a raster effect to a vector graphic. These settings can have a large impact
on the resulting artwork; therefore, it’s important to check the Document Raster Effects
Settings dialog box before you start working with filters and effects.
To set rasterization options for a document:
1 Choose Effect > Document Raster Effects Settings.
2 Set the following rasterization options, and click OK:
Color Model Determines the color model that is used during rasterization. You can
generate an RGB or CMYK color image (depending on the color mode of your document),
a grayscale image, or a 1-bit image (which may be black-and-white or black-and-trans-
parent, depending on the background option selected).
Resolution Determines the number of pixels per inch (ppi) in the rasterized image.
(See “
About resolution in bitmap images” on page 26.)