Judging-assist for
rhythmic gymnastics

The first calibrated multi-camera system designed for rhythmic gymnastics judging panels and coaches.

ARGRASS — the product
Capture rig · top-down
Fig.3D scene reconstructionAIST++ · 4-cam
What it measures

Five metrics, each with
a confidence interval

Every metric carries a frame range the judge can replay and a confidence band the panel can weigh.

turns
Pivot rotation counts
Integer turns + partial
degrees
Body deviation
Off vertical axis
metres
Apparatus throw height
Release to apex
millimetres
Catch accuracy
Distance from body
crossings
Boundary events
Frame-precise
How it works

Four steps,
lab-blueprint clear

Same path on every routine — capture, pose, triangulate, measure. Every step is inspectable, every output is signed.

01
Capture
Two to eight calibrated cameras at 60 fps. Optional LiDAR modules layer in for competition-grade precision and apparatus-touch detection.
02
Pose 2D
YOLOv8x extracts a 17-joint skeleton per view from each frame, following the COCO-17 schema.
03
Triangulate
Linear DLT fuses every view into one 3D skeleton, gated by per-joint reprojection confidence.
04
Measure
Metric joints feed pivot counts, body deviation, throw heights, and a signed audit-trail export.
4–8 camPer rig
COCO-17 · 60 fpsOutput
Signed exportAudit
Two tiers

Tier on demand.
Built for the room

Same pipeline either way. Two cameras fit a training hall; four to eight cover a competition floor.

Starter

Training-grade

2 × camera · 1 × laptop · training-grade
  • —Cloud reconstruction
  • —Coach review UI
  • —60 fps capture
  • —Cross-platform export
For clubs and academies

Two cameras and a laptop fit in a kit bag. Coaches review pivots, throws, and catches between sessions. Numbers are training-grade.

Competition-readyRecommended

Federation-grade

4–8 × camera · LiDAR module · competition-grade
  • —Optional LiDAR module · LIFeLiDAR SAS
  • —Judge review UI
  • —Audit trail · signed export
  • —Apparatus-touch detection
For federations and events

Four to eight cameras with optional LiDAR for apparatus-touch detection. Every metric ships with a confidence interval and a signed audit trail. Judges keep every call.

Where it stands

Pilot open
Through 2026

Three clubs across France are already trying ARGRASS through the 2026 season.

Status board · liveMI-Lab · 2026 season
2026 · Q1
Pilot programme
Open through 2026 season
Open
2026 · Q1
Partner clubs
Three sites across France
France × 3
2025 · Q4
LiDAR partnership
LIFeLiDAR SAS
Signed
2026 · Q2
Federations
National-body discussion underway
In discussion
Fig. Programme status, updated 2026.Status · live
Contact
dashavolosova@gmail.com
We reply within five business days