
Chapter 5 Vision Control
5-3
[ 3 ] Major Axis Angle
Image data taken from the camera displays the object as a plane. When the
object on this plane is rotated, the longitudinal direction axis, which is easy to
rotate, is called the major axis of the main axis. The axis vertical to this is
called the minor axis of the main axis.
The µVision board defines an angle () from the horizontal axis (X axis) to the
major axis of the main axis as the main angle. The main axis angle is obtained
to an object in white (1) or black (0), in the designated range of the window
after binarization of the image data.
Window Object
X
Major axis
Minor axis
Fig. 5-4 Main Axis Angle
Note: The main axis angle cannot be specified for a square or circle.
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