128
•
3D Data Type output format description
Z-Trak2 3D Profiler Sensors
Calibrated Z
X=Index 00
X=Index 01
X=Index 2K
Calibrated X
Not
Uniform
Spacing
R (16-Bit)
R (16-Bit)
W (16-Bit)
W (16-Bit)
R (16-Bit)
W (16-Bit)
Reflectance R
Multipurpose W
X (16-Bit)
X (16-Bit)
Z (16-Bit)
Z (16-Bit)
X (16-Bit)
Z (16-Bit)
•
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.
•
The calibrated X data (16-bit) must be multiplied by the X scale factor to obtain the real-
world X value in the specified measurement unit.
•
Z data below the Far-FOV (i.e. < 0) will return as invalid.
•
Z-Expert graphs the Z output data in the selected measurement unit at each X point;
floating the mouse over the profile will show the calculated real-world X measurement
relative to the left edge of the measurement area.
•
The raw reflectance value is a 16-bit number representing the object's reflectance at
reflected point (peak). This R data is not scaled to any real-world unit such as lumens.
•
The current implementation of the multipurpose W value represents the width of the
reflected point (peak width) in pixels, and uses only the low-order 8 bits. The high-order
bits are reserved.
Field of View
(FOV)
X-axis = 2K points
X-axis = 2K points
Calibrated Profile Depth
Calculating real-world values
Real-world measurement data is calculated from the data acquired by the profiler with the formulas
shown below. It is important to note that the profiler capture data buffer has scaled down values
and requires multiplication to represent full scale values and conversion to the chosen
measurement unit.
