🧩 Splat Patch POC 2

Different shape of the same problem. Where SplatPatchPOC picks a trajectory and renders targeted views, VNCCS_SplatPatchPOC2 does a systematic scan: it sweeps the splat from a grid of viewpoints (default 24 yaw positions at a low pitch), renders small 384px tiles, and triages every region as "has content," "missing," or "bad." The output is a map of the scene's health, not a single repair job.

That's why its required input is just ply_data - no source images needed. It doesn't know or care what your original photos were; it just scans the reconstruction itself and reports where the splat is thin or broken. The outputs tell the story: triage_images, triage_masks, triage_raw_images, plus triage_camera_poses/intrinsics for every scanned view.

The scan dials

• scan_yaw_count (default 24, up to 96) - how many positions around the compass. More = finer coverage, slower.
• scan_pitch_deg (default 8) - how far off horizontal the scan tilts. Rooms need a bit of up/down to see the floor and ceiling.
• scan_size (default 384, 128–768) - per-view render size. Small and fast is the point; this is triage, not final renders.
• camera_radius_fraction (default 0.08) - how far out the sweep sits from the scene center, as a fraction of scene size.
• coverage_threshold, speckle_kernel, min_bad_ratio, max_missing_ratio - the classification rules. speckle_kernel (default 9) is the noise filter that decides what counts as "a bit of missing" vs "genuinely empty"; min_bad_ratio (0.03) and max_missing_ratio (0.65) set how much badness makes a view worth flagging.
• min_yaw_separation_deg - dedupes near-duplicate scan angles so you don't triage the same wall 3 times.
• use_gsplat / max_render_points - render backend and point budget.

What you do with a triage

The workflow intent: scan first, look at the triage_masks to find where the scene falls apart, then aim the targeted SplatPatchPOC / SplatPatchPOC_v2 at exactly those regions. Triage tells you what to fix; the POC nodes fix a specific view. Used together they stop you from rendering a 20-view repair pass over a scene that's fine except for one wall.

As ever with this experimental family: expect tuning. The threshold semantics (min_bad_ratio, max_missing_ratio) are the fiddliest part and worth two minutes of experimentation before you trust a triage map.

Install

The pack standard:

cd ComfyUI/custom_nodes
git clone https://github.com/AHEKOT/ComfyUI_HYWorld2
cd ComfyUI_HYWorld2
pip install -r requirements.txt
python install.py

Or Manager → HY-World 2.0. use_gsplat on by default means the vendored fork matters here too.