Autotek autocad raster design 2010 用户手册

Press Enter for entire image or specify sub-region option [Existing/Clip
region/Window/Polygon]:

2 Do one of the following:

■

Press Enter to use the filter on the entire image.

■

Enter e, then click a closed vector entity to use an existing entity to
define the region.

■

Enter c to use an existing image clip.

■

Enter w, then enter two points to define a rectangular sub-region.

■

Enter p, then enter several points to define a polygonal sub-region.

 (page 302) dialog box is displayed.

3 Choose the Filter Type you would like to run on your image.

4 Choose the Number of Passes.

For example, a pass value of 3 means running the operation 3 times.

5 Choose the Direction(s) in which you would like the filter to run.

6 Click OK to apply the filter.

■

 (page 302)

Menu

Image  ➤  Image Processing  ➤  Bitonal Filters

Raster Design Toolbar

Command Line

ibfilter

Dialog Box

 (page 302)

114 | Chapter 6   Modifying Images