Single-Camera 3D Kinematics for Athletic Movement Review
A SpatialForm White Paper on Phone Sports Video, Performance Form, and Personal Athletic Intelligence.
SpatialForm Method White Paper — V1.1
Published by Nous Technology Limited
SpatialForm White Paper
SpatialForm is a Personal Athletic Intelligence product by Nous Technology Limited.
SpatialForm turns ordinary Phone Sports Video into Performance Form: a spatially readable, reviewable, and actionable representation of athletic movement.
No sensors. No straps. Just a phone.
The problem is not capture
The problem is not capture. The problem is reading what the body actually did.
Most athletes already record sports video. A tennis player records serves from behind the baseline. A coach records footwork, rotation, loading, timing, and recovery during training. The capture device is already present.
Personal Athletic Intelligence as the category
Personal Athletic Intelligence is the highest-level product category for SpatialForm.
It defines SpatialForm as a product that turns Phone Sports Video into personal, readable, spatially observable athletic insight for athletes and coaches.
SpatialForm is Personal Athletic Intelligence. It helps athletes move from video capture to movement understanding, from flat replay to spatial observation, and from scattered visual impressions to a structured feedback loop for performance review.
Performance Form as the core product layer
Performance Form is the core user-facing layer of SpatialForm.
It is the visual and analytical layer through which Personal Athletic Intelligence becomes visible, understandable, and useful to the athlete.
Performance Form is not just a score. It is a movement review layer created from real Phone Sports Video.
Performance Form helps athletes and coaches inspect form behavior, timing, rhythm, range, movement state, body organization, and spatial structure.
Phone Sports Video
Phone Sports Video is ordinary athletic video recorded with a smartphone.
It is the starting point for SpatialForm. The missing layer is not capture. The missing layer is reading what the body actually did.
From 2D Recording to Performance Form
Phone Sports Video begins as a fixed 2D recording. The original video remains the source evidence, but the recorded camera angle is no longer the only observation angle.
Through Single-Camera 3D Kinematics, SpatialForm uses ordinary Phone Sports Video as the starting point for a more spatial review of movement.
Through Digital Human Feedback, the athlete’s motion can be represented as a reviewable 3D movement representation. But the product layer the athlete experiences is Performance Form.
SpatialForm turns that reading into Performance Form.
Movement Intelligence as a method process
Movement Intelligence is the process of making athletic movement readable, reviewable, spatially observable, and easier to discuss from real sports video.
It is not the top-level product category. It is the process that helps convert Phone Sports Video into Performance Form.
Single-Camera 3D Kinematics
Single-Camera 3D Kinematics refers to reviewing movement in three-dimensional structure from ordinary Phone Sports Video.
In SpatialForm, it supports Performance Form by helping movement become spatially readable while respecting the limitations of single-camera footage.
Digital Human Feedback
Digital Human Feedback is a method layer that supports Performance Form.
It helps make movement visually and spatially observable by representing motion in a way that can be reviewed beyond the original 2D camera angle.
Digital Human Feedback serves Performance Form.
Biomechanical Insight
Biomechanical Insight means movement feedback that helps athletes and coaches understand how the body organizes motion.
In SpatialForm, Biomechanical Insight is used for athletic review. It is not medical advice, injury diagnosis, or treatment guidance.
The SpatialForm performance feedback loop
- Capture the movement with ordinary Phone Sports Video.
- Process the movement through Movement Intelligence.
- Structure the movement with Single-Camera 3D Kinematics.
- Support spatial observation through Digital Human Feedback.
- Present the result as Performance Form.
- Review form, timing, rhythm, range, movement state, and body organization.
- Discuss the movement with clearer visual and analytical evidence.
- Refine the movement in the next training cycle.
- Compare new attempts over time.
Boundaries and limitations
SpatialForm is not a clinical diagnosis tool.
SpatialForm is not presented as a replacement for laboratory motion capture.
SpatialForm does not claim benchmark accuracy without public data.
Phone Sports Video quality matters.
Performance Form depends on source video.
Coaching context remains essential.
A review layer is not the same as a final answer.
Read the full SpatialForm Method White Paper
The full PDF explains Personal Athletic Intelligence, Performance Form, Phone Sports Video, Single-Camera 3D Kinematics, Movement Intelligence, Digital Human Feedback, Biomechanical Insight, boundaries, and glossary definitions.
Public Archive
The SpatialForm Method White Paper is archived on Zenodo for citation, preservation, and public reference.
Zenodo DOI: 10.5281/zenodo.20531050
Zenodo record: https://zenodo.org/records/20531050
GitHub Matrix: https://github.com/nous-technology-limited/tennis-movement-analysis-matrix