EVS EPSIO Version 1.63 - May 2011 User's Manual - Manual (Page 40)

Issue 1.63.C Epsio Version 1.63 – User’s Manual
EVS Broadcast Equipment – May 2011
34
• The four anchor points you use to calibrate a camera angle should not be
aligned.
• Always match the points to the same edge of the lines.
• You can use more than 4 points to perform the calibration.
• If the 2 n d and 3 r d tests of the goal area calibration for a given camera are
excellent, you can use the position parameters (x,y,z) of this camera angle for
the central circle calibration of the same camera.
2.3.6 T
ESTING YOUR
C
ALIBRATION
G
ENERAL
T
EST FOR A
16-M
ETER
C
AMERA
Once you have calibrated all your camera angles, it is recommended to test them
using test snapshots of the playfield.
A general and quick test consists of drawing an offside line, and rolling it over the
calibration shots, to ensure that the offside line matches the following lines of the
field:
• the 16-meter line
• the 6-meter line
• the half-way line
Systematic tests based on test snapshots are explained in details below.
T
ESTING THE
G
OAL
A
REA
1 st Test
Using the same view as your calibration shot, take an offside shot.
Check that the 16-meter line and 6-meter line are correctly matched.
If necessary, reposition the faulty anchor points.
2 n d test
Move the camera to the bottom corner arch without changing the zoom.