GE Mentor Visual iQ User Manual page 40

Measurement Types
The Visual iQ system supports three types of measurement: 3D Phase, stereo,
and comparison.
Type Advantages
3D Phase
Over stereo or comparison measurements:
• Optical tip used to view and measure.
• Automatic tip to target range-finding
indicator.
• Full screen view.
• More accurate depth measurements.
• Cross-section profile view and measure
• Increased measurement distances are
possible
• The surface need not be perpendicular
to the tip.
• 3D point cloud view
Stereo Over comparison measurements:
• More accurate.
• No known reference is needed.
• Can measure depth.
• The surface does not need to be
perpendicular to the probe view.
Comparison
Over stereo measurements:
• Use the probe headguard or any other
tip optic.
• Measure with probe tip farther away.
• Measure large objects.
• Check approximate size of many items
quickly.
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Disadvantages
• The system cannot measure moving
parts.
• Must measure highly reflective
surfaces at an angle.
The system may be unable to position the
matching cursors accurately with any of
these conditions in the measurement area:
insufficient detail, repeating patterns, glare,
or smooth, straight lines to measure along.
In some cases, you can eliminate the
problem by repositioning the probe tip
and adjusting the brightness.
• Less accurate than stereo
measurements.
• Known references may not be present
and may be difficult to deliver to the
measurement site.
• Measurement surface must be nearly
perpendicular to the probe view for an
accurate measurement.
Measurement Tips
Note: 3DPM tips are automatically identified by the system. Stereo tips must be
manually selected each time a stereo measurement is performed.
Unlike standard optical tips, 3D PhaseProbe® (1) and StereoProbe® (2) measurement
tips are factory-calibrated for use with specific probes and will not measure
accurately with other probes. These tips are matched to probes by the serial
numbers (3) identified on each optical tip and each probe label (4). Calibration data is
stored in memory in the probe.
Notes:
-To ensure measurement accuracy, verify the tip's accuracy each time it is installed.
Appendix E
Refer to for verification procedures.
-The installed tip must be identified before making Stereo measurements.
view stereo tip management OR Click here to work with 3DPM tips.
To ensure that no mechanical damage has degraded their accuracy, verify
measurement tips each time you use them. See Verifying Measurement Tips in
Appendix E. To learn which tips are available for each measurement technique, see
the Optical Tip Table in Appendix B.
Click here to
07/30/2014