Background reminder: At the 48th minute of the match between France and Honduras, Benzema sends a ball that touches the front post then back to the goalkeeper Valladares, floating above the famous goal line. Benzema raises his arms to the sky, and the referee, the Brazilian Sandro Ricci, awards the goal. Hondurans protest. Was the ball really in?
The video rendered by the technology on the goal line (goal-line technology), used for the first time in a World Cup football decision of the International Federation of Association Football (FIFA), shows that the post bounce does not get the ball in, and then the goalkeeper pushes the ball awkwardly a few inches behind the line. It is therefore a mark of Honduras against his own camp.
14 HIGH SPEED CAMERAS
Technically, the video technology that was able to confirm this result is called the Goal 4D Control. The twelve stadiums of the 2014 World Cup in Brazil are equipped with this system, which allows to know in real time whether a ball has crossed or not the goal line.
The system was designed by the German firm GoalControl GmbH. It works with fourteen high-speed cameras, seven at each of the two goals, which are quite far from each cage that is continuously scanned. One is placed behind the goal. The six other face two by two, at the center line, approximately midway between the end and the middle, and just behind the goal line.
The video, linked here, shows, among other things, details of their locations.
FIFA says: “The position of the ball is continuously and automatically recorded in three dimensions, as soon as it comes close to the goal line. If the ball completely crosses the goal line, the CPU sends data in less than a second a visual signal to the receiver-watch the referee. However, the referee has the last word to validate the goal or not.”
Additionally, this visual signal is enhanced by vibration of the wrist receiver.
The system is also able to send and distribute the images within seconds of its recordings of the movements of the ball near the goal line.
The system is fully automatic, is designed to operate without any dedicated technician. In his video demonstration, the company GoalControl-4D ensures that the signals sent to the referees servers analyzing camera data is encrypted to prevent piracy.
For FIFA and the system designers, the very fast time between an action and the decision of the arbitrator shall prevent the game from being stopped or disrupted.
NO FAILURE DURING THE TESTS
The technology developed by GoalControl was chosen in April 2013 over three competitors: Cairos GLT System, GoalRef and Hawk-Eye. The last one has however been chosen by the Premier League, English Premier League, which tested it this season.
The system used for the 2014 World Cup in Brazil has been tested in several situations and especially in real conditions at the World Clubs 2012 and 2013 competitions and during the 2013 Confederations Cup in Brazil. No contentious cases had occurred.
The German championship, however, recently decided not to implement technology GoalControl Gmbh, preferring to rely on human decisions alone, in accordance with the recommendations of Michel Platini. The Union of European Football Associations (UEFA), of which is Platini is president, also favors arbitration by five for all European club competitions and selections.