SICK Ranger3

Ranger3 uses an HDR principle called multi-slope with one knee-point, which means
that the normal linear relationship between the received light and the resulting pixel
value (reflectance) is broken into two linear segments. The result is a compressed
light-to-pixel value characteristic for high light intensities, according to figure 33.
Light intensity 2
Pixel value 1
5
6
4
Maximum
pixel value
3
Figure 33: HDR multi-slope principle
1
Pixel value
2
Light intensity
3
Maximum pixel value
4
Linear (non-HDR) mode
5
HDR mode
6
Knee-point
The knee-point position and the slope after the knee-point are controllable by the
MultiSlopeMode parameter in the camera. There are pre-defined parameter settings ( Off,
PresetSoft, PresetMedium, 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 figure 34.
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 34: HDR settings for Ranger3
1
Pixel value
2
Light intensity
3
Linear (non-HDR) mode
4
Soft pre-set
5
Medium pre-set
6
Aggressive pre-set
8 CONFIGURATION
44
O P E R A T I N G I N S T R U C T I O N S | Ranger3 8020774/1D7Q/2022-03 | SICK
Subject to change without notice