If the form of a statue, for example, is illuminated using conventional technology,
this creates the required shadows, but the color is now not depicted correctly.
If you then try to brighten these shadows using an image processing program,
the interference is also increased, thus resulting in an unattractive image.
A different problem occurs when photographing
metallic, curved surfaces. If the original is illumi-
nated with directional lighting, one or more of
the surface elements always reflect directly in
the camera lens. This can be prevented by
using diffused lighting. However, this then re-
duces the contrast.
6to5-Scan works differently, with the color and
form scans being performed separately. The
color scan is only illuminated with very diffuse
lighting with no light and shadow. In this way,
the color scan is independent of the form
properties: Form contrast, gradation and focus,
light shadows, sheen and reflections. The color
and form scans are added together on the
computer. The form is first illuminated
separately on the computer under ideal, virtual
Gray area with height modula-
tion and spatial illumination
once the z component has
been converted into gradations