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Intelligent Motion Capture & Algorithmic Modelling

Capturing elite performance precisely enough to describe it, and modelling it well enough to predict what a change would do.

Elite technique is the product of thousands of repetitions tuned to an individual body. It is also, in most sports, invisible at the resolution that matters: a fraction of a degree of joint angle, a few milliseconds of timing, a shift of load between two feet.

This area of the Joint Laboratory builds the capture and modelling pipeline that makes those differences measurable. Sensors and cameras record the movement; algorithms reconstruct it as a usable model of the athlete; and that model is then used to describe a technique, compare two athletes, detect the point at which form degrades under fatigue, or simulate the effect of an equipment or position change before anyone has to test it.

What the work covers

Approach

Models are trained and checked against measured data, not the other way around. Where a model is used to predict — the effect of a new position, a different shoe, a changed racket — the prediction is treated as a hypothesis to be tested in the tunnel or on the field.

Because the Laboratory sits inside a university, the pipeline is built to be examined: methods are documented, and the aim is to publish what is learned as well as to apply it.

Athlete reconstructed by a motion capture pipeline

Reconstructing a full-body movement from captured data in a wind- and water-dependent sport.

Competition analysis at the venue

Applying the same models to competition data, away from the laboratory.