Blog

From the lab.

How we build object detection, cartography and AI on the device. With real numbers, even when they're not perfect.

DeepSwing launch monitor with a 7-iron: 123 m carry, 156 m total, 159 km/h ball speed, 15.8 degrees launch, 2.6 degrees left
· 5 min read

Launch monitor numbers explained: ball speed, smash, carry

Ball speed, smash factor, launch angle, spin, carry and landing angle: what a launch monitor's numbers mean and which ones really improve your game.

Golf simulator room with hitting mat, tripod and a projected 3D range with shot data
· 5 min read

Golf simulator at home with your phone: setup and costs

Net, mat, light, screen and a phone on a tripod: what a golf simulator at home really needs, how much space it takes and what it costs.

Flyover of a 3D golf hole with bunkers, forest and mountains
· 4 min read

How to connect GSPro to your phone as a launch monitor

Step by step: how DeepSwing sends every shot from your iPhone or Android phone to GSPro on the PC, with fixes for the usual connection problems.

Three views of the DeepSwing golf course GPS: 3D relief, satellite and map, each with the distance to the centre of the green and the plays-like distance
· 5 min read

Plays-like distance: how much elevation really changes

Downhill a hole plays shorter, uphill longer, and at altitude the ball flies further. How plays-like distance works, with real numbers from the Alps.

Three green heatmaps from the DeepSwing golf course GPS with a colour scale from low to high, slope arrows and a flag set at 18 m
· 5 min read

Reading greens with a heatmap: see the slope first

Where is the green high, which way does it fall, how steeply? How a green heatmap is built from laser-scan data, how to read it and its limits.

DeepSwing golf course GPS with a map view of a hole and the stats screen with Handicap Index 8.4, course handicap and playing handicap
· 4 min read

How to calculate your handicap under the WHS

Score differential, Handicap Index, course handicap and playing handicap: how the World Handicap System calculates, step by step with an example.

Animated figure swinging a golf club on the range, with a smartphone filming the swing in the foreground
· 5 min read

How to analyse your golf swing with your phone

Film it right, understand the six swing phases and use 30 checks: how to analyse your golf swing with your smartphone and improve with purpose.

Launch monitor camera view: club head at 145 km/h, ball at 186 km/h, launch 13.3 degrees, direction 2.7 degrees left
· 6 min read

How an iPhone measures ball flight without radar

240 frames per second, two in-house detection models and a physics model: how a phone becomes a golf launch monitor, with carry within 0–2% of radar.

Aerial image of Golf-Club Bad Pyrmont with fairways, greens and bunkers
· 6 min read

Course AI: how we map golf courses from aerial imagery

A segmentation model on 0.3 m aerial imagery, a learned hole model and laser-scanned terrain: how our course AI works, and how good it really is.

High-speed top-down shot: golf ball on the hitting mat just before impact
· 5 min read

On-device instead of cloud: why our AI runs on the device

Latency, cost, privacy, resilience: why DeepSwing and Pevu run their AI on the phone, and when the cloud is still the right choice.

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