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8.1. Problems with the Scan Quality
Cause / Solutions
Problem
The shorter the distance between the scanner and the object, the more
detailed are the scans. Set up the scanner at the smallest possible working
distance, so that the scan size is just sufficient.
Make sure that the ambient light is constant.
Make sure that the object and scanner do not move.
Make sure that nothing moves in view of the camera, not far behind the object
as well.
Open the ”Texturing“ menu and perform a new white balance.
Use a dark background / table cover, which reflects almost no light (e.g. black
fabric).
Small outliers will be automatically removed in the final processing step,
Fusion.
Make sure that the distance between scanner and object is the same as during
the calibration.
Make sure that both, projector and camera, are well focused on the scanned
object.
On shiny objects reflections should be avoided. The object must be matted
with spray if necessary. We recommend our Coating Spray, order number:
COATING-SPRAY-500
If outliers can not be avoided, you can remove them later in the Shape Fusion
menu (”Cleaning tool”). Often, the most comfortable way is to clean up all scans
at the same time before aligning them.
The scanner can capture only details that are not finer than 0.1% of the
scanned surface (min. 0.06 mm).
The scans are smooth / fine details
are missing
The scans contain irregular distor-
tions / outliers
The color textures do not look good
Other possible problems and their solutions can be found on our website in the FAQ:
http://www.david-3d.com
Summary of Contents for SLS-2
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