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Scanning
Requirements for the scanned object
The scanner analyses structured light reflected from the surface of the object, therefore, scanning should
be carried out in premises without direct sunlight, as well as free of dust and vibration. For the same reason
scanning of the following objects is not possible or is too difficult.
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too dark and black objects
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transparent objects
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mirrors
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flecking and glossy objects
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fur
To work with such objects it is recommended to process them with special aerosol products prior
scanning, which leave a very thin coat of white powder on the object after drying.
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HELLING Developer solution U89
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Sherwin D-100
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Developer solution ПС-33
There are also some difficulties when you are scanning objects with sharp edges, deep grooves or holes,
thin wall objects. Problems can also be caused by objects that contain large contrast areas (for example,
black lettering on white paper). Geometrical distortion may appear in places with strong contrast.
Scanning principle and methods
If you're shooting a single fragment (scan) - you get a three-dimensional model of the object surface. To
create a full object model you need to obtain surfaces of the object, that together entirety replicate the
form of the object, i.e. scan the object from different angles.
Obtained fragments are combined in the special software by the surface geometry, hence there is
another requirement - the object must be rigid and do not change its shape during the entire scanning
procedure. Otherwise, the geometry of the same area of the object surface of different scans may be
different, and it will be impossible to unite the pieces into a coherent whole.
In RangeVision 3D scanner there are 3 scan options available, which are different, in the first place, by
the fragment alignment method:
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