A white dot, 43 millimetres, in motion. From it we compute the entire flight.
A golf ball leaves the club at well over 200 km/h and is out of frame within a few hundredths of a second. In that time our detection has to find, track and measure it. The pipeline works in an armed state: it searches for the resting ball, waits for the strike and evaluates exactly the frames that matter.
02.1 — Object detection
Detection knows three states: searching, armed, impact. Only when the ball rests in the target zone does it arm. Full-precision computation happens only around the strike. That saves battery and makes the measurement robust.
The ball's position in the first frames after impact gives ball speed, vertical launch angle and direction. A physics model computes the flight from there: carry, total distance, apex and landing angle.
Compared with a radar launch monitor (Rapsodo MLM2 PRO), our carry is within 0 to 2 percent depending on the club. We don't measure spin directly, we estimate it. And we say so openly.
02.2 — Capabilities
In use in our products, every day, on real devices.
Place the ball in the frame, detection locks it and arms itself.
Impact is detected in a fraction of a second, no button needed.
The ball's speed right after impact, measured from the image.
How steep and where the ball starts, for draws, fades and straight shots.
Computed with ball flight physics, wind and air density, within 0–2% of radar.
Doubtful shots are detected and don't count.
On the green too: speed and direction of putts.
Outdoors on the mat or indoors into a net, for right- and left-handed golfers.
02.3 — How it works
Find and lock the ball in the target zone.
Wait for the strike, camera at 240 fps.
Detect and measure launch within a few frames.
Physics model computes carry, apex and landing.
02.4 — Used in
iOS & Android · No extra hardware · GSPro
Phone on a tripod, hit real balls: ball speed, club speed, launch angle, direction, carry. 12,000+ real courses, games, projector and GSPro. From €8.99 a month.
The launch monitor on your phoneiOS & Android · AI coach · Launch monitor · GPS
AI swing analysis with 30 checks, a launch monitor on your phone and golf course GPS with green heatmaps. 12,000+ courses, for iPhone, iPad, Mac, Apple Watch and Android.
Coach, launch monitor and GPS in one app02.5 — FAQ
Compared with a radar launch monitor (Rapsodo MLM2 PRO), our carry deviates by 0 to 2 percent depending on the club. Ball speed, launch angle and direction are measured directly from the image.
No, spin is estimated from the measured values. We label it that way in the app and on this page on purpose.
Yes, on the range and in a simulator. What matters is enough light for short exposure times and a stable phone position.
More technology
Our own detection model for the golf club: finds the club head frame by frame, draws the swing path and measures speed before impact. Right on the phone.
Club head and ball detection, ball flight physics and 3D rendering in one app: carry, total distance, ball speed, launch angle and direction. On iPhone, iPad, Mac and projector.
Real-time pose estimation: joints, angles and motion phases, right on the phone. In DeepSwing it becomes a coach that splits every swing into six phases and runs thirty biomechanical checks.
Contact
Object detection, body tracking, segmentation or cartography, on your device, in real time. Let's talk about it.