46
Preparing to Scan
3.3
Ambient Conditions
Unfavorable
surfaces
•
Highly reflective (polished metal, gloss paint)
•
Highly absorbent (black)
•
Translucent (clear glass)
•
Green (complementary contrast: to red laser beam)
Unfavourable
weather conditions
)
Color or powder these surfaces before scanning.
)
•
Rain, snow or fog cause poor measurements, so it is not possible to
survey during these conditions!
•
Surfaces that are directly illuminated by the sun have an increased range
noise and therefore a larger measurement uncertainty.
•
If some objects are scanned against the sunlight or a bright spotlight, the
optical receiver of the HDS6000 can be dazzled so heavily that in this area
no measured data is recorded. A "black hole" appears in the reflectance
image.
