Dalsa Z-Trak2 2K Series User Manual page 144

Resampling Points in X Details
Maximum resolution between
real points is at near FOV
(without resampling)
The rectified output Z-points
are an interpolation
between the closest left and
right real pixel
Additional interpolated X points are dependent on the step size
Since FOV width is fixed, the X step size determines:
- distance between output points in microns
- number of output points
If the number of output points (set by Z-Trak2, not by the user) is greater than the
number of real points (dependent on the step size), those new points are created
by interpolation between real points.
Resampled
Real
point
point
additional points created using interpolation
Resampled Z-points are calculated based on adjacent real points.
Possibility of Invalid Interpolated Points
If there is an invalid point between valid real points, all interpolated points created
between the two valid real points are also invalid.
Real
point
Resampled Resampled Resampled
point point point
136 • 3D Data Type Output Format Description
uniform spacing in X
Invalid
Real
point
X X X
additional invalid points created using interpolation
Near
FOV
points is larger at
Far
FOV
Real
point
Resampled
point
Real
Point
Real
X
point
X X X
Teledyne Vision Solutions
Distance
between real
the far FOV
(without
resampling)
Real
point
Resampled Resampled
point point
Z-Trak Family of 3D Sensors