User's Manual

Issue 1.63.C

Epsio Version 1.63 – User’s Manual

EVS Broadcast Equipment – May 2011

• 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

and 3

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 TESTING YOUR CALIBRATION

GENERAL TEST FOR A 16-METER CAMERA

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.

TESTING THE GOAL AREA

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.

test

Move the camera to the bottom corner arch without changing the zoom.