Gaussians From Point Cloud

A ComfyUI node in GaussianPack with 7 inputs and 1 output.

By PozzettiAndrea·Created 3 months ago·Updated 2 months ago· 6

◄ply_path—►

◄output_filenamegaussians_from_pcd►

◄output_dir►

◄init_scale1.00►

◄init_opacity0.100►

◄knn_k3►

◄subsample_max0►

CategoryGaussianPack

Inputs (7)

Name	Type	Default	Description
ply_path	STRING		Path to an input PLY. Can be a plain point cloud (x/y/z + optional r/g/b) or an existing 3DGS PLY (in which case all fields are read; missing ones get sensible defaults). knn-derived scales OVERRIDE whatever scales the input had.
output_filename	STRING	gaussians_from_pcd	Basename for the output PLY (no extension).
output_diropt	STRING		Directory to write the output PLY. Leave blank to use ComfyUI's output folder.
init_scaleopt	FLOAT	1.000.01–10	Multiplier on the knn distance when computing initial scales. 1.0 = exactly the mean distance to k nearest neighbors. <1 = smaller gaussians (sharper but possibly under-covered). >1 = larger (smoother but blurrier).
init_opacityopt	FLOAT	0.1000.001–0.999	Sigmoid-space initial alpha per gaussian. The node applies logit(init_opacity) and writes that to `opacity`. 0.1 matches upstream 3DGS sfm-init.
knn_kopt	INT	31–10	k for the knn lookup. 3 matches upstream 3DGS (mean distance to the 3 nearest neighbors after skipping self). Larger k = smoother scale field.
subsample_maxopt	INT	00–50000000	Optional random cap on the gaussian count. 0 = no cap (write every input point). Set a positive value (e.g. 2_000_000) if a downstream node OOMs at huge counts. Deterministic seed = N_in.

Name	Type	Description
ply_path	STRING	—