GE XL VU - Matching Cursors and Accuracy

Measurement
XL Vu™ VideoProbe
®
103
Matching Cursors
Your cursors Matching cursors
SQ INCH
A32
BLU
<5>
PLACE ITEM. SELECTS NEXT ITEM.
0.100
INDEX = 1.7 <5>
BACK ZOOM
For each cursor the user places on the left image, the system places a
matching cursor on the right image.
The left cursors must be placed on an image point that has enough
detail to distinguish it from surrounding points. If the neighboring points
look the same as the point chosen the system cannot accurately place a
matching cursor.
For every matching cursor, the system calculates a match strength value
between <0> (lowest condence) and <5> (highest condence). If too
little detail is present, the system simply does not generate a matching
cursor. Whenever possible, achieve a match strength of at least <3>. If
this is not possible, capture another image.
Verify that the matching cursor appears to be in the same position as
selected cursor. A matching cursor that is off even slightly can have a
signicant impact on the measurement accuracy.