Graphics Programs Reference
In-Depth Information
As a first step, some preparatory work needs to be done on the site photo in
an image editor, such as Photoshop (see Figure 11.9), and items in the fore-
ground, such as vehicles, people, vegetation or even street furniture, need to
be cut or masked out.
Attention
It is fundamental to choose your viewpoints wisely, to take photos that
are not cluttered by nonessential elements, to use a digital camera that
will give you a good, high-resolution image, and to use lenses with as little
distortion or aberration as possible. You should also make sure that the
daylighting is good and that your photo contains some elements that you
can use to establish a sense of scale.
In Artlantis, the site photo is placed as a background image in the preview
window. In the Site Insertion module, the 3D and 2D control windows
appear. The X, Y, and Z axis guides are also shown in both these windows
(See Figure 11.10).
1.
In the 2D View, find an edge of the building that is prominent in the site
photo and use it to place the axis origin.
2.
In the site photo (3D View), line up the X, Y, and Z axes with guide edges,
such as pavements, roadways, and the horizontals and verticals of
neighboring buildings.
3.
Start the insertion calculation. The 3D building will be composited over the
site photo. The position of the three axes can now be tweaked in real time to
fine-tune how the building sits in the site photograph. The focal length of the
virtual camera can also be adjusted to refine the positioning of the building.
4.
Now, it is just a matter of placing the image prepared in Photoshop in the
foreground. This will mask out any parts of the building that should be in
the background.
FiG 11.10
Artlantis studio - Site Insertion interface.
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