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WiseImage– User’s Guide
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You can set the current measurement unit in the dialog box of the
AutoCAD
Units
command.
To define the raster image dimensions in millimeters or inches, AutoCAD needs to
obtain information about scanning resolution. If this information is contained in the
image file header, then the program can automatically scale an image correctly
when inserting it.
Some image file formats do not store resolution information (e.g. RLC). In this case
AutoCAD cannot scale an image 1:1 automatically. However, if the scanning
resolution is known, then you can scale an image manually after insertion.
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The best way to store raster images is to use the TIF format. This format
provides the highest compression for monochrome raster images and always
stores the scanning resolution.
To insert an image, containing scanning resolution information in
scale 1:1
1. Choose
Units
from the
Format
menu. Choose
millimeters
or
inches
from the list
of the AutoCAD
Units
command.
It is only necessary to select units once. When inserting further images in the
current drawing, AutoCAD will use this setting.
2. Click the
button on the
WiseImage
toolbar.
- or -
Choose
Raster Image
from the
Insert
menu.
3. Using the
Select Raster Image
dialog box, find the required image file, select it
from the list, and choose
Open
.
4. Enter 1 in the
Image
dialog box in
Scale
. This value is set by default.
5. To specify an image position in the drawing, enter coordinates in the
Insertion
Point
box or click the insertion point on screen.
These coordinates define the position of the image’s lower-left corner. By default
the insertion point is 0,0.
6. Enter a rotation angle in the
Rotation
box. Click
OK
.
To set an image position, scale, or rotation angle on the screen, choose the
Specify
on Screen
option. The program will ask you to specify an insertion point, scale,
and/or a rotation angle after the dialog box is closed.
If the image does not store the resolution information, then it is scaled when
inserting so that its width in AutoCAD units becomes equal to the scale factor and
its height is scaled proportionally. So, if you specify a scale factor of 1 when
inserting, its width will be equal to 1 AutoCAD unit. Provided with scanning
resolution information, you can calculate a scale factor and scale an image with the
AutoCAD
Scale
command so that it is inserted at a scale of 1:1.