![background image](http://html1.mh-extra.com/html/sick/1106166/1106166_operating-instructions-manual_1264410051.webp)
5
HDR mode
6
Knee-point
The knee-point position and the slope after the knee-point are controllable by the
Multi
slope mode (HDR)
setting. There are pre-defined parameter settings (
Off
,
PresetSoft
,
Pre‐
setMedium
, and
PresetAggressive
) that correspond to different amounts of compression.
These settings result in a dynamic range increase of approximately 2, 6, and 15,
respectively. See
.
0
0
500
1000
1500
2000
2500
3000
3500
Light intensity
2
Pixel value
1
50
100
150
200
250
3
4
5
6
Figure 42: HDR settings for Ruler3000
1
Pixel value
2
Light intensity
3
Linear (non-HDR) mode
4
Soft pre-set
5
Medium pre-set
6
Aggressive pre-set
In HDR mode, the sensor readout must be finished before a new exposure can start.
The sensor readout time is the time the sensor needs for the readout of the collected
data. The minimum cycle time is the sum of the exposure time and the readout time. In
linear mode, the sensor readout and a new exposure can be done in parallel.
For example: If the readout time is 33
μ
s and the exposure time is 30
μ
, the total cycle
time is 33
μ
s for linear mode and 63
μ
s for HDR, giving a maximum timed profile rate
of 30 kHz and 16 kHz respectively.
8.5.3.4.1
Controlling HDR imaging
Tabs:
2D Image
,
3D Image
To enable HDR imaging:
1.
Open the
Laser profile extraction
parameter section.
2.
Set
Multi slope mode (HDR)
to
PresetSoft
,
PresetMedium
,
PresetAggressive
or
Off
.
°
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 2D mode, the maximum exposure time for
PresetSoft
,
PresetMedium
and
PresetAg‐
gressive
is about 16, 40 and 100 ms, respectively.
•
In 3D mode, the maximum exposure time for
PresetSoft
,
PresetMedium
and
PresetAg‐
gressive
is about 4,10 and 26 ms, respectively.
CONFIGURATION
8
8026049//2021-04 | SICK
O P E R A T I N G I N S T R U C T I O N S | Ruler3000
51
Subject to change without notice