| --- |
| license: cc-by-4.0 |
| pretty_name: PPISP Scene→Sim Ablation (OFF vs ON) |
| task_categories: |
| - image-to-image |
| tags: |
| - 3d-reconstruction |
| - gaussian-splatting |
| - radiance-fields |
| - novel-view-synthesis |
| - ppisp |
| - nvidia |
| - scene-to-sim |
| - physical-ai |
| size_categories: |
| - n<1K |
| --- |
| |
| # PPISP Scene→Sim Ablation — OFF vs ON |
|
|
| Evaluation renders from a single controlled ablation of **NVIDIA's PPISP** inside |
| Forenly AI's **Scene→Sim** (real-scene → simulation) pipeline. |
|
|
| ## What this is |
| The same real **3-camera capture** reconstructed with the **same 30,000 training |
| iterations**, changing exactly one variable — **PPISP off vs on**. |
|
|
| | Run | Result | |
| |-----|--------| |
| | PPISP **off** | hazy, washed-out blur; geometry and colour collapse | |
| | PPISP **on** | sharp, colour-correct, stable — **+9.5 dB PSNR** | |
|
|
| ## Files |
| - `ppisp-off.jpg` — reconstruction render, PPISP off |
| - `ppisp-on.jpg` — reconstruction render, PPISP on |
| - `ppisp-sidebyside.jpg` — labelled side-by-side (off | on) |
|
|
| ## Why it matters |
| In Scene→Sim, reconstruction fidelity **is** the training ground: a blurry scene is a |
| broken one — geometry the robot can't trust, textures the policy can't read. PPISP |
| targets the photometric artifacts (lighting/colour drift) that break radiance-field and |
| Gaussian-splatting reconstructions; it works across 3DGS, 3DGUT and NeRFs. |
|
|
| Methods benchmarked in this line of work: **PPISP · 3DGRUT · 2DGS · GOF**. |
|
|
| ## Method / credit |
| PPISP is NVIDIA's method for physically-plausible compensation of photometric variations |
| in radiance fields. This card documents an applied ablation, not the original method. |
|
|
| Interactive viewer: [Space — ppisp-scene2sim](https://huggingface.co/spaces/ForenlyAI/ppisp-scene2sim) |
| · Study: https://forenly.ai/lab-study/ppisp |
|
|
| **Forenly AI — The Skill Layer for Humanoids.** |
|
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