Uniformx Z (Rectifiedc) - Dalsa Z-Trak2 2K Series User Manual

UniformX Z (RectifiedC)

As mentioned above, the sampling interval between points varies in both X and Z in the measurement area. The
UniformX Z format intends to make the sampling interval uniform in the X direction; each profile only consists of
16-bit Z values, the interval in X-axis (called step size) is implicit. This is achieved through resampling, as
depicted below. The data is therefore "rectified" to a uniform sampling pattern.
•
Output is 16-bit calibrated Z data.
X=index 00
X=Index + 1
Uniform
Spacing
X=Index + n
•
The raw X data are resampled, providing a uniform scale for the Z data in any location of the measurement
area. The step size is a feature of the X-Axis category in Z-Expert.
•
The calibrated Z data (16-bit) must be multiplied by the Z scale factor to obtain the real-world Z value in the
specified measurement unit.
•
Z data above the Near-FOV (i.e., Z value > max Z) or below the Far-FOV (i.e., Z value < 0) will return as
invalid.
•
Z-Expert graphs the Z output data in the selected measurement unit at each X index point; floating the mouse
over the profile will show the calculated real-world X measurement relative to the left edge of the
measurement area. Use the view settings to change the X-axis labels to these transformed X values.
Z-Trak Family of 3D Sensors
Z (16-Bit)
Z (16-Bit)
Calibrated Z Output
Z (16-Bit)
Calibrated Profile Depth (Z)
Anchor Point (0,0)
Model Dependent
X-axis = Uniform Sampling points
Rectified
Field of View
(FOV)
X-axis = Uniform Sampling points
equal in count at any FOV location
3D Data Type Output Format Description • 135
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