Riftek RF627 Series, Руководство пользователя

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Laser Scanners
RF627, RF627Smart [Revision 2.1.2] 20.09.2021
Exposure time is too high Exposure time is optimal
18.3.2. Multiple exposure mode and EDR mode
Multiple exposure mode ( Exposition control > 2 exposures, 3 exposures ), as
well as EDR mode are intended to expand the dynamic range of the scanner. These modes
are used when the objects (or the surfaces of one object) located in the field of view of the
scanner have different reflective abilities.
In the multiple exposure mode, the final profile is formed as a result of combining
several (2 or 3) profiles obtained with different exposure times.
NOTE: In this mode, the frequency of profile output decreases in proportion to the
number of exposures.
When using EDR , depending on the selected mode, different exposure times are
set for even and odd columns or the uneven sensitivity of the CMOS sensor is used. The
final profile is formed by combining two profiles. The frequency of profiles does not change.
Example:
The scanner sees two objects: a light object and a dark object.
With a lower exposure time, the profile of a light object looks well-defined;
a dark object shows only a few profile points. You need to record the exposure time for the light object.
When increasing the exposure time, the profile of the dark object is well-defined, but the profile of the light
one is not. You need to record the exposure time for the dark object.