Create the ortho-image

Launch the command Extract OrthoImage and select Elevation view for the OrthoImage mode.

Give the 3 points as described in the picture below to define the frontage to map (ensure XYZ mode is enabled in the toolbar). The 3 points can be clicked accurately in orbit orthographic camera mode or given by coordinates.

Frontage to map

Now, you can adjust the defined box to capture exactly what you need. This is possible either through the scene by editing the limit box (in 3D frame view) or though the dialog box by editing the size, the depth, and the top left corner. To keep horizontal lines, horizontal in the orthoimage, it is advised not to modify Horizontal parameter.

You can activate the Preview to visualize the changes in real time.

Image preview

Set the image properties parameters as below:

• Pixel size: 0.01 m,

• Point/Line magnification: 1,

• Background color: white.

Then Save image as a picture file. In the dialog Select the destination file..., enter orthoimage as file name and choose jpeg as file format.

Two files have been created:

• orthoimage.jpg: the picture

• orthoimage.txt: the georeferencing file

Insert the image in AutoCAD

From AutoCAD, enter IMAGEATTACH in the command line prompt and select orthoimage.jpg

1. Uncheck all the options as below.

2. Then copy-paste the insertion point from orthoimage.txt (see the Autocad import section) to Insertion point group.

3. Do the same for the Scale and set the Rotation to 0.

4. Validate with OK.

Attach Image

Rotate the image in AutoCAD

Now, it is necessary to rotate the image.

If rotation Z is not 0,

1. enter ROTATE3D in the command line,

2. select the image,

3. select the Z axis direction,

4. select bottom left corner in image object and copy-paste rotation Z.

Then if rotation X is not 0,

1. enter ROTATE3D in the command line,

2. select the image,

3. use the bottom left and bottom right points of the image object to define the rotation axis (X' axis)

4. copy-paste rotation X.

Finally, if rotation Y is not 0,

1. enter ROTATE3D in the command line,

2. select the image,

3. use the bottom left and top left points of the image object to define the rotation axis (Y" axis)

4. copy-paste rotation Y.

Now the OrthoImage is inserted in 3d in AutoCAD scene.