Wimbledon 2017: The tech behind the world’s top tennis tournament
The Championships at Wimbledon, which consumes some 28 tons of strawberries, 10,000 litres of cream, and 320,000 glasses of Pimm’s per year, is notable for its seemingly unchecked luxuriant hedonism. But while most companies, organisations, and institutions are looking to cut costs, Wimbledon has stuck to its mantra. Don’t do things cheaper; do things better.
Case in point: Wimbledon’s use of technology is really quite impressive. I’ve been lucky enough to follow Wimbledon’s tech over the last three years, and it’s been very encouraging to see a massive endeavour like The Championships dive deeper and deeper into technology. You might think that after 140 years Wimbledon could be stuck in its ways, but far from it. When technology is the only viable way of providing consistent, significant gains for players, visitors, and hundreds of millions of people spectating remotely, you don’t try to fight it; you embrace it.
Of course, Wimbledon is embracing tech in a distinctly Wimbledon way. This year, for example, The Championships are trialling free Wi-Fi—but because they don’t yet know how people will behave with free Wi-Fi, it’s only available in three specific locations (near the food court, in the ticket resale area, and on the west side of Court 12). The tournament continues through this weekend, but its team has already started analysing the data. It turns out that, thankfully, the Wi-Fi users on court 12 only use their phones between points. When play begins, Wi-Fi usage stops. If the trial is a success, Wi-Fi could be rolled out across Wimbledon in 2018.
The other big advance this year is that IBM (Wimbledon’s official tech partner) is now scanning every tennis match and automatically generating highlight video clips of important or exciting moments. This sounds difficult, but apparently, it only requires IBM to track three variables: noise level, action recognition, and crowd cheering. These combine to generate an “overall excitement level.” Noise level is presumably the ambient sounds of an excited audience, while action recognition refers to the players. Are they running around a lot, fist pumping, or otherwise being emotive?
When the overall excitement level crosses a threshold (0.8?), the software goes back through its video buffer and creates a highlight clip of the point. For now, a human editor still goes through every clip before being published. A human editor is still required to tease out video clips from more nuanced matches, too; the IBM software doesn’t yet understand the context of individual matches or player pairings. But given that other IBM software at Wimbledon tracks match context—mostly so that commentators can add some extra flavour—it seems like an obvious improvement to the auto-highlight tech in future years.
One of Wimbledon’s richest assets is a vast database containing stats from over 100 years of competitive tennis matches. As Wimbledon’s partnership with IBM has matured and new data-gathering techniques and sensors have been rolled out, the depth and accuracy of the data has improved.
Perhaps most excitingly, Wimbledon is now storing the 3D state of tennis matches via the Hawk-Eye camera system available on some of the courts. Hawk-Eye, which uses multiple cameras to track the ball and resolve line judging disputes, outputs a constant stream of data that IBM can process into a useful format. But actually doing something with that data is a risky affair, because it isn’t clear who owns it. Some tennis players, as you can imagine, aren’t keen for some wily big data/machine learning software to reveal the secrets of their play style to the world.
Today, Wimbledon/IBM only uses the Hawk-Eye data to track each player’s “aggressive” shots. Presumably, a lot of raw data is being stored in Wimbledon’s database, though, which could be processed at a later date. For more on the trials and tribulations of gathering, using, and sharing data, our recent feature on football data is a good place to start.
Wimbledon also sees that new public Wi-Fi as a potential source of exploitable data. As you may already know when you join a Wi-Fi network (or indeed any network), the operator of that network can see which services and apps you’re using. For example, with this year’s Wi-Fi hotspot trial, Wimbledon can now see how many visitors are using the Line messaging app. Line is predominantly used in Asia, so Wimbledon might use that data to tweak how it advertises the competition to Asian visitors next year.
On a simpler level, if Wimbledon blankets the All England Lawn Tennis Club with Wi-Fi, it will be able to use each device’s unique MAC address to track the movement of most visitors around the venue. Not for creepy reasons, I’m assured, but to iron out bottlenecks and inefficiencies. Should there be another toilet here? A strawberries-and-cream stand there? An everlasting font of Pimm’s here? Venue-wide Wi-Fi would also allow Wimbledon to push notifications to visitors as they move around, beacon-style.
Two years ago, an IBM engineer told me they were in discussions with the UK’s mobile network providers to track visitors through cellular triangulation, but this year I was told that no such partnership was ever struck. Doing it via Wi-Fi (and perhaps augmented with Bluetooth) is probably more sensible, anyway.
360-degree cameras…
Finally, Wimbledon has released a significantly overhauled mobile app for this year’s Championships. Over the last few years, there has been a big shift from people following Wimbledon on a desktop browser to their mobile devices. The mobile app is meant to provide a better experience than the mobile website—but to be honest, if you’re into tennis, you should probably just download the free app (iOS/Android) and see what you think. This year there’s a new feature called Ask Fred that apparently uses some IBM Watson-type tech to answer your questions. The app also has the ability to look through some 360-degree cameras that have been placed on each court.
Article culled from arstechnica.com