GE Mentor Visual iQ Manual Del Usuario página 110

Reference Plane – The plane, defined by three or more points on a
reference surface, from which the perpendicular distance to other
surface points is computed. A blue square indicates the reference
plane position in the measurement image 3D point cloud view.
Note: A reference plane is calculated as flat, even if the surface the
plane rests on is not flat. This is a potential source of error.
Reference Profile Line – Area Depth Profile lines set by the
measurement cursors that follow the surface contours and are used
to determine the area and reference planes for the profile slices.
Reference Surface – Unaltered part surface to be used as a reference
for various measurements.
Result Slice – The Area Depth Profile profile slice that includes the
highest or lowest point and is shown on the image and in the point
cloud.
Surface Mask – Shows surface points very close to the measurement
reference plane in green to help the user establish accurate reference
planes with Measurement Plane and Depth, Depth Profile, and Area
Depth Profile measurements.
Yellow Mask on Image – With 3D Phase Measurement, indicates
surface data may be of low quality for measurement. The potential
for reduced accuracy may exist, especially for depth or small
measurements. Yellow mask areas are often caused by surface to
surface reflections. Changing the probe orientation to make such
reflections bounce away from the probe tip may improve data quality
and reduce or eliminate yellow mask areas.
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