Autotek autocad raster design 2010 Benutzerhandbuch

Menu

Image  ➤  Cleanup  ➤  Deskew

Raster Design Toolbar

Object Shortcut Menu

Right-click ➤ Image ➤ Rotate

Command Line

ideskew

You can remove speckles or stray pixels from your bitonal image.

Speckles can appear in an image when you scan drawings or blueprints that
are dirty or wrinkled, or when the scanner itself is dirty. The process consists
of three main actions:

1 Specify the area to be cleaned. Draw a rectangle around the region,

despeckle the entire image, or define a smaller region by means of a
polygon, clip region, or an existing vector entity.

2 Specify the maximum size of pixel to delete. Click an existing speckle for

this purpose, or define the size by drawing a small rectangle or entering
a numeric value in drawing units or number of pixels.

Raster Design then searches the image to identify speckles that are equal
to or smaller than the defined speckle size, highlighting those that meet
your criteria.

3 Inspect the identified speckles, then press Enter to delete them, or

respecify the speckle size, or deselect any speckles you want to keep.

NOTE Raster Design uses 

 (page 396) to speed up the

editing commands.

1 Click Image menu  ➤  Cleanup  ➤  Despeckle.

84 | Chapter 6   Modifying Images