The Football You can be unrecognized ever, at least until now, as a sport where you have wagered by technology. The steps given are very numbered and not always in major aspects of the game. In this world of Brazil, which would be very strange to not have given you account that has begun, a technology is calling attention: Goal-Control 4 d.
This technology has already been applied in a party, specifically France against Honduras yesterday. In the 50th minute of party, after the Frenchman Benzema play, goalkeeper of Honduras Valladares was introduced the ball in his own goal. The move could have given for one of those fateful Phantom goals, but this time the technology was ready to notify the referee (for joy on the part of the audience at the Estadio Beira-Rio Stadium) that seems it the ball, or not so much, he had completely crossed the goal line. Both for France and technology.
3 years looking for the phantom goal-ending
From 2011 leading FIFA behind a system that avoids so-called goals ghost. After a game of 10 companies with the most varied technologies, finally decided that the camera-based Hawk-Eye was the choice, rejecting options that included sensors or customized balls.
After tests that included nearly 2,500 simulations of scenarios to make happen a phantom goal under different circumstances, from players involved to position the ball or weather conditions, the system has begun to be implemented in a general and official in the Brazil World Cup.
The Goal-Control System 4 d, contrary to what might seem in this age of sensors, does not apply this technology for the monitoring of the soccer ball. There are no sensors for presence within the goal or used smart balls such as that proposed by Adidas. In this system is the key to the the processing power and video cameras.
7 cameras by area that all see
So now, the players are no longer the only ones that remain under the watchful eye of cameras in a stadium. If lend much attention can, in the stages of the World Cup of Brazil, you can see 14 cameras placed in something in different areas, half intended to spy on what is happening in each area of the field.
Seven cameras that monitor each small area keeps the ball always focused once it enters its area of action, covering all angles. The cameras are placed two by two for information in real time from the position of the ball. The recording is done to 500 frames per second, generating data by value of 4.5 GB per second.
All that information is sent to a process via optical fiber. There, in real time each image is analyzed individually and the ball is identified. The rest of the picture elements, from players to field lines, are filtered to make the next phase of the process only to the ball as input.
The next step, also in real time, is determine the position at every moment of the ball as well as their speed. It is done by triangulation of the images from the cameras and just two of them. The system allows to know with an accuracy of 3.6 mm the place where the ball is every 2 milliseconds even if it is covered by two players or seized by the goalkeeper.
Less than a second reaction to know if it has been goal
With the information of the location of the ball at all times, the system is able to determine when the ball has completely surpassed the goal, just what is necessary according to the regulation line to make it goal. Thus, although at the foot of field or even the television images, the eye is not able to determine whether the ball entered the goal, the Goal-Control 4 d system that gives us that information based on the location in three dimensions of the ball.
If the system determines that this has happened, in less than a second referee receives information in a clock that vibrates with an alert message. The data are sent by the wireless and protected system.
If you don’t believe it, they repeat it to you
Although in principle the FIFA only contemplates that if information has been goal or the arbitrator does not have it, the system stores the images from each camera and information generated to resolve doubts or claims to any. And it opens the door to that, as it can happen in tennis, television or even the stadium screens, goal can be recreated in a virtual way for joy (or disappointment) of fans of both teams.
GoalControl-Replay system performs a recreation in three dimensions that it can handle demand and gives a technological additive more this small step to professional football.