EDGS reproduction
An independent reproduction of 3D Gaussian initialisation, validated against analytic scene geometry.
Interactive walkthrough
A good match can still have poor geometry.
Compare stable and near-parallel viewing rays, then test the optional parallax guard.
Select a stage to inspect its role in the workflow.
Step 4: Initialise. Initialise a Gaussian from the surviving point.
Paper filters, no angle guardSeparate synthetic experiment · rounded from raw data
Step 04 / Inspect
Initialise a Gaussian from the surviving point.
Accepted points receive colour coefficients, scale, opacity, and rotation before export to a standard 3DGS PLY. This example illustrates the decision rather than running that pipeline.
point: retained
output: 3DGS point-cloud PLY
full training: outside this reproduction6° illustrative pair. Accepted for initialisation.
Illustrative geometry, not to scale. Measurements come from the separate synthetic stress scene.
Inspect the synthetic resultsResults
- 0184 tests covering camera geometry, triangulation, sampling, spherical harmonics, input/output, and pipeline integration.
- 02Noiseless synthetic recovery to numerical precision; independent solver agreement within 1e-8.
- 03On the synthetic stress scene, a 3° parallax guard reduced median surface error from 0.0486 to 0.0042 scene units.
Engineering details
Near-parallel rays can pass confidence and reprojection filters while producing inaccurate 3D points.
Reproduce the pipeline
Reimplement correspondence alignment, triangulation, filtering, spherical-harmonics fitting, and standard 3DGS PLY export.
Check known geometry
Measure error against analytic surfaces and cross-check triangulation with an independent SVD solver.
Filter unstable pairs
An optional minimum-angle guard rejects poorly conditioned rays; it remains disabled in the paper-faithful configuration.