Functions
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© SICK AG • Subject to change without notice. • 8017035/ZMO9/2017-06-08
Mandatory settings when using HDR
HDR shutter
In addition to the normal shutter, set the speed of the shutter that will be
used to take the image with the slow shutter time.
This must be set to a value that is longer than the normal shutter speed.
When you select “HDR” mode, this is automatically set to a value that is
four times the shutter time.
Camera mode: “NR”
In “NR” (Noise Reduction) camera mode, two images are taken: one when
the laser is on and one when the laser is off. Measurement is performed
on the difference of these two images.
Because the image taken when the laser is off can be canceled, this function
is effective in situations where light other than that from the laser — such
as noise — has an effect on the measurement. Also, the noise generated
during imaging with a high gain can also be canceled.
Image 1 (laser on)
Image 2 (laser off)
Composite image
Figure: Example of “NR” mode operation
Tips: • Because two images are taken for each measurement, this mode has
a long sampling period.
• When measuring workpieces that move at a high speed, the NR image
combination may not perform appropriately.
