Sensor Calibration
Calibration Using Calibration Cross CC 30
Page 33 (40)
at
os
_cs
_r
ev
01_en
_r
ev
-c
2012
-09
-03
10.4
Calibration Using Calibration Cross CC 30
This section describes the calibration process using a calibration
cross. The calibration with a calibration cross is necessary for ATOS
COMPACT SCAN systems for mobile operation only!
Due to the size of the cross you can only calibrate the sensor in a
horizontal position.
CC 30 - Calibration cross folded and unfolded.
Calibration with calibration cross CC30 in horizontal position
During calibration, the sensor configuration is determined. This means
that the camera positions and the orientation of the cameras to each
other are defined, and the image characteristics of the cameras are
determined. Based on these settings, the software calculates from the
points of the calibration object in the 2D camera image their 3D coor-
dinates. The calculated 3D coordinates are then calculated back again
into the 2D camera images. For the position of the reference points,
this results in the so-called reference point deviation (intersection er-
ror).
