Sphere Fit" Measuring Program - MICRO-EPSILON surfaceCONTROL 3D Instruction Manual

Description of the "Evaluation" View

6.1.4 "Sphere Fit" Measuring Program

Use the "Sphere Fit" program to calculate a sphere at 3D points. Proceed as follows:
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If applicable, select the input data for the program (see below, section "1" and Chap. 3.16.3).
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If necessary, limit the range for the sphere calculation in order to eliminate interfering points (see
below, section "E" and Chap. 3.16.4,
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If required, activate the optimized fit and enter a suitable threshold for the optimized fit (see below,
section "2").
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If applicable, select measured values that are to be used later for calculation, OK/nOK assessment,
logging and output (see below, section "H" and Chap. 3.16.8).
The measuring program outputs the following measured values:
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Center x: The X coordinate of the center point of the calculated sphere.
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Center y: The Y coordinate of the center point of the calculated sphere.
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Center z: The Z coordinate of the center point of the calculated sphere.
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Radius: The radius of the calculated sphere.
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Number of points: The number of points in the point cloud that were used to calculate the sphere.
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Sigma: The standard deviation of the distances between the points that were used to calculate the
sphere and the surface of the calculated sphere.
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Peak to Valley (PV): The distance between the two points that are furthest away inwards and out-
wards from the sphere, relative to the computed sphere. The two points are determined from the
points that were used to calculate the sphere.
A
C B
1
2
G
Fig. 6.6: "Sphere Fit" Measuring Program
Display Elements and Parameters in the "Sphere Fit" Program:
A "General" toolbar: Using this toolbar, you can select the data source (see Chapter
save and load parameters and reset selected parameters to default settings (see Chapter 3.17).
B List of active measuring programs: This section displays the active measuring programs from
the "Find objects" and "Combine objects" groups. You can add and remove measuring pro-
grams/measuring program groups (see Chap.
Chap. 3.14) and select an active measuring program for parameterizing and displaying the
measured values.
C Measuring program groups / Tab bar for switching between views: This tab bar allows you
to switch between the four main views (see Chap. 3.2). To the left of the tab bar you find the sec-
tion for adding, removing and selecting measuring program groups (see Chap. 3.15).
3.16.5
D
and 3.16.6).
H
I
3.13 and 3.15), move measuring programs (see
E F
3
3.4 und 3.5),
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