Splat Journal

Algorithmic imprints of disappearing spaces

Petite Ceinture — Particle forces & splat interaction

Field notes — Petite Ceinture, January 2026
Paris, 12e arrondissement — 06.01.2026

Navigation dans un environnement Gaussian Splatting reconstruit sous Unreal Engine. Des forces de particules interagissent avec le passage de la caméra, révélant la structure du radiance field. Les splats se dispersent comme des fragments que la mémoire peine à retenir. Une exploration en temps réel sur l’ancienne voie ferrée parisienne de la Petite Ceinture, sous la neige.

Navigating through a Gaussian Splatting environment in Unreal Engine. Particle forces interact with the camera’s passage, revealing the structure of the radiance field. Splats scatter like fragments we struggle to hold onto. A real-time exploration of the old Parisian railway, the Petite Ceinture, under snow.


1 — Traveling with particle interaction

Particle forces & splat interaction — Unreal Engine


Training

Method: Gaussian Splatting (PostShot)
Images: 938
Splats: 2.0M
Iterations: 150k
Alignment: RealityCapture — 850 aligned images

Processing

Post-clean: none

Capture

Camera: Insta360 X4
Projection: equirectangular
Capture duration: 2:06 min
Location: Petite Ceinture, Paris 12e — outdoor / snow


Developed as part of ongoing research on navigable volumetric reconstructions.

Nicolas Mimault, Bagnolet / Paris · nmimault@gmail.com

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