Bounding Box Alignment" Measuring Program - MICRO-EPSILON surfaceCONTROL 3D Instruction Manual

Description of the "Data Preprocessing" View

5.1.3 "Bounding Box Alignment" Measuring Program

Use the "Bounding Box Alignment" program to align a point cloud. This step allows to compensate for
changes to the orientation and position of the object in different measurements. Therefore, ROIs that are
used in subsequent measuring programs are not affected by the position and orientation changes and
can be used at defined positions relative to the object.
The measuring program calculates an enclosing box at selected points. The point cloud is rotated about
one of the three coordinate axes and moved such that the box is parallel to the two remaining coordinate
axes and the center of gravity of the box is in the origin of the coordinate system.
The enclosing box is calculated as follows: First, the point cloud is projected onto the plane defined by
the axis of rotation. An enclosing rectangle is calculated based on the projected points. The height of the
box is given by the minimum and maximum coordinates of the points along the axis of rotation.
Note: If the object being measured is not point-symmetrical, the program can compensate for rotations of
up to max. 180° in one range by virtue of the symmetry properties of the box.
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 box calculation in order to eliminate interfering points (see sec-
tion "E" and Chap. 3.16.4,
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Select the axis of rotation and, if applicable, the axis for alignment (see below, section "2").
A
B
C
1
2
G
Fig. 5.5: "Bounding Box Alignment" Measuring Program
Display Elements and Parameters in the "Bounding Box Alignment" 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
"Data preprocessing" group. You can add and remove measuring programs (see Chap. 3.13),
move them (see Chap. 3.14) and select an active measuring program for parameterizing and dis-
playing 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 section
for adding, removing and selecting measuring program groups (see Chap. 3.15).
D 3D-View: The 3D-View visualizes the 3D data (see Chap. 3.10).
3.16.5 and 3.16.6).
D
E
H
3.4 und 3.5),
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F
3