Autotek autocad raster design 2010 用户手册

■

Invert. Reverse the light and dark shades of an image. You can invert
bitonal, color, and grayscale images. Inversion reverses the dark and light
areas of an image.

■

Mirror. Flip an image along either the horizontal or vertical axis to correct
problems that occur when scanning software reverses drawings, or when
the back of the drawing is scanned by mistake.

■

Touchup. Edit lines at the pixel level, using a square, circular, or diagonal
shaped brush tool that you can resize.

NOTE Raster Design uses 

 (page 396) to speed up the

editing commands.

You can rotate an image so that it matches the rotation angle of a vector
drawing or another image.

If you want to match the scale of the image with another image or vector you
can use the Scale command. If you want to move or scale the image as well
as rotate the image, you can use the Match command.

 (page 28).

1 Click Image menu  ➤  Cleanup  ➤  Deskew.

2 Select the image you want to correct.

3 Select the base point you want to rotate the image around.

4 Define the source angle by entering a value or by picking two points on

the raster image that you want to rotate.

For example, select two points you want to match up with two other
points on an image that is already rotated correctly.

5 Define the destination angle by typing a value or by picking two points

to define the angle.

Deskewing an Image | 83