2011

Table Of Contents
colorized to represent the appearance of a house. A raster image references
the pixels in a specific grid.
Raster images, like many other drawing objects, can be copied, moved, or
clipped. You can modify an image with grip modes, adjust an image for
contrast, clip the image with a rectangle or polygon, or use an image as a
cutting edge for a trim.
The image file formats supported by the program include the most common
formats used in major technical imaging application areas: computer graphics,
document management, engineering, mapping, and geographic information
systems (GIS). Images can be bitonal, 8-bit gray, 8-bit color, or 24-bit color.
Images with 16-bit color depth are not supported starting with AutoCAD 2011
for Mac.
Several image file formats support images with transparent pixels. When image
transparency is set to on, the program recognizes those transparent pixels and
allows graphics in the drawing area to show through those pixels. (In bitonal
images, background pixels are treated as transparent.) Transparent images can
be gray-scale or color.
NOTE Although the file name extension is listed in the following table, the file
format is determined from the file contents, not from the file extension.
Supported image file formats
File extensionDescription and versionsType
.bmp, .dib, .rleWindows and OS/2 bitmap formatBMP
.gp4, .mil, .rst, .cg4, .calMil-R-Raster ICALS-I
.flc, .fliFLIC Autodesk Animator AnimationFLIC
Overview of Raster Images | 909