Gocator 2300 & 2880 Series
Theory of Operation • 3D Acquisition • 43
Resolution and Accuracy
X Resolution
X resolution is the horizontal distance between
each measurement point along the laser line.
This specification is essentially based on the
number of camera columns used to cover the
field of view (FOV) at a particular measurement
range .
Since the FOV is trapezoidal, the distance
between points is closer at the near range than
at the far range. This is reflected in the Gocator
data sheet as the two numbers quoted for X
resolution.
X resolution is important for how accuratel the
width of a target can be measured.
NOTE: When the Gocator runs in Profile mode
and Uniform Spacing is enabled, the 3D data
is resampled to an X interval that is different
from the raw camera resolution.
Z Resolution
Z resolution is the variability of the height
measurement, in each individual 3D point, with
the target at a fixed position. This variability is
caused by camera imager and sensor
electronics.
Like X resolution, the Z resolution is better at
the close range and worse at the far range. This
is reflected in the Gocator data sheet as the two
numbers quoted for Z resolution.
Z Resolution gives an indication of the smallest
detectable height difference.
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