Faro Focus 3D X 130, Training Manual

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Focus
3D
X 130 and X 330 • SCENE 5.3
September 2014
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Accuracy Verification
In some fields, such as law enforcement, verifying the accuracy of the
scanner to a reasonable degree of certainty, referred to as an accuracy
confirmation check, is critical. This can be done using scale objects.
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Scale object are objects such as rulers, yardsticks, or any accepted
standard measurement indicator. Features within the scan area with
known, verifiable measurements, such as windows and doors, can also be
used as scale objects.
The Pythagorean theorem (
a
2
+ b
2
= c
2
) is used to obtain the distance
between two points.
The Pythagorean theorem is based on three elements:
• Vertical distance ( a )
• Horizontal distance (
b
)
• Slope distance, or hypotenuse ( c )
a
c
b
To successfully verify accuracy, ensure:
• The scale object is placed at a sufficient angle to the scanner
(at least ten degrees). The scale object should not be placed
perpendicular to the scanner.