![background image](http://html.mh-extra.com/html/sick/ranger3/ranger3_operation-instructions-manual_1263837059.webp)
Figure 38: 3D image, no laser reflectance
Figure 39: 3D image with laser reflectance
8.2.5.4.1
Setting exposure time using reflectance
Use the reflectance image as an indicator when adjusting the exposure time:
•
If the exposure time is too low, the objects in the reflectance image contain dark
regions or regions with missing data. See
.
•
If the exposure time is too high, the objects contain bright saturated areas and
artefacts. See
.
Figure 40: Low exposure
time
Figure 41: Normal exposure
time
Figure 42: High exposure
time
8.2.5.5
Enabling HDR imaging
Workflow step:
Image
,
Data collection
To enable HDR imaging:
1.
Open the
Parameter editor
and select the
AcquisitionControl
category.
2.
Set
MultiSlopeMode
to PresetSoft, PresetMedium or PresetAggressive.
°
PresetSoft increases the dynamic range by a factor ~2.
°
PresetMedium increases the dynamic range by a factor ~6.
°
PresetAggressive increases the dynamic range by a factor ~15.
NOTE
Using HDR affects the maximum exposure time:
•
In Areascan (2D) mode, the maximum exposure time for PresetSoft, Pre‐
setMedium and PresetAggressive is about 16, 40 and 100 ms, respectively.
•
In Linescan (3D) mode, the maximum exposure time for PresetSoft, PresetMedium
and PresetAggressive is about 4,10 and 26 ms, respectively.
OPERATION
8
8020774/14IM/2019-07 | SICK
O P E R A T I N G I N S T R U C T I O N S | Ranger3
59
Subject to change without notice