Figure 53: Normal exposure time: Laser line bright but not saturated. No background
visible.
Figure 54: Too long exposure time: Laser line wide and saturated. The background is
visible.
3. Set RegionSelector to Region1.
4. Set the ExposureTime parameter to the same value as for Region0.
✓
This will give the 3D acquisition the same exposure time as the 2D image.
NOTE
If reflectance measurements are enabled, the exposure time can also be adjusted
using a reflectance image as reference. For details, see "Setting exposure time
using reflectance", page 64.
9.2.7.2 Setting the DetectionThreshold parameter
Workflow step: Data collection
Prerequisites: Focus and exposure time have been adjusted for best image quality.
1. Turn the laser off.
2. Click Start to start the collection of 3D image data.
✓
Since the laser is turned off, only noise will be visible in the image.
3. Open the Parameter editor and select the Scan3dControl category.
4. Take a snapshot of the 3D image and adjust the DetectionThreshold parameter in
the following way:
°
If there is much noise in the image, increase the DetectionThreshold value.
°
If there is no noise in the image, decrease the DetectionThreshold value.
5. Repeat the previous step until DetectionThreshold has a low value without excessive
visible noise.
6. Turn the laser on.
9.2.7.3 Setting sensor region
Workflow step: Image
To adjust the height and position of the sensor region that is used to generate the 3D
image data (Region1, see "Extraction regions", page 33), follow the steps below.
OPERATION 9
8020774/1D7Q/2022-03 | SICK O P E R A T I N G I N S T R U C T I O N S | Ranger3
61
Subject to change without notice
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