3 Basics
25
To insert an image, without scanning resolution information in scale 1:1
1. Choose
Raster Image
in the
Insert
menu.
2. Using the
Select Raster Image
dialog, find the required image file, select it from
the list, and choose
Open
.
3. Enter 1 in
Scale
of the
Image
dialog. This value is set by default.
4. Click on
Details
, note or write down the raster image width in pixels that is
displayed in
Width
of the
Image Size in Pixels
box.
5. To specify the image position in the drawing, enter coordinates in
Insertion
Point
.
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 degrees in
Rotation
. Click
OK
.
The inserted image width will be equal to one AutoCAD unit.
7. Select the inserted image and start the
Scale
command.
8. Specify the image’s lower-left corner as a base point.
9. Enter a scale factor as an AutoLisp expression in the following way:
( / ( * <Width > 25.4) <Resolution>);
<Width > is the recorded raster image width in pixels; <Resolution> is the raster
image scanning resolution in pixels per inches (dpi); 25.4 - the factor to transfer
inches to millimeters.
The width and height of the inserted image will be equal to those of the scanned
image in millimeters.
If you want to scale an image so that its width and height will be equal to the
scanned image dimensions in inches, then you should enter a scale factor in the
following way:
( / < Width > < Resolution >)
Use the
rNew
command to insert a new empty raster image in AutoCAD with
WiseImage. Using this operation you can create an image of any type: color,
grayscale, monochrome. The lower-left corner of a new image will be placed at the
point you specify. You can also specify a scale factor and a rotation angle for the
new image.
To create a new image
1. Open the
New Image
dialog using one of these methods:
From the
rFile
menu, choose
New
.
- or -
Click the
button on the
WiseImage
toolbar.