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Lesson 4: Add Raster Images
Maps can contain more than drawing objects. For example, you can add
graphics.
In this lesson, you insert a raster (bitmapped) graphic and display it behind
the other objects in your map.
You also modify the image in your map. Your edits do not change the original
image file, but only the way the map displays it. In this lesson, you change
the brightness and contrast. You also clip the image, to display only part of
it.
NOTE
For a tutorial on adding an FDO raster image through Data Connect, see
Exercise 5: Add a raster image
(page 45) in the Building a Map tutorial.
Exercise 1: Insert a raster image
Aerial and satellite photographs often contain information about their location
and scale. This information makes the images “georeferenced.” AutoCAD
cannot use this georeferencing information, so it cannot properly position
the imagery, but AutoCAD Map 3D can.
In this exercise, you insert a digital raster graphic (DRG) of Redding, California,
into a drawing of the same city. The information in the associated TIFF world
file (TWF) allows you to locate and scale the image correctly.
NOTE
While it is not required for this tutorial, you can download AutoCAD Raster
Design Object Enabler for AutoCAD Map 3D 2009 from
http://www.autodesk.com/rasterobjenabler. This free utility supports many raster
image formats that Data Connect does not support.
114 | Chapter 3 Tutorial: Moving From AutoCAD to AutoCAD Map 3D
Summary of Contents for 15606-011408-9005 - MAP R6.3 NAMED-10U PK
Page 1: ...AutoCAD Map 3D 2010 Tutorials April 2009 ...
Page 44: ...36 Chapter 1 Tutorial Introducing AutoCAD Map 3D 2010 ...
Page 89: ...Exercise 4 Try out the sample data 81 ...
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