3D Asset Editing & Inpainting — Trellis Hi3DGen (Colab)
One of the first public tools for true 3D inpainting — edit and repair 3D meshes the way you would inpaint a 2D image. Upload a .ply mesh plus a conditioning image, paint the region you want to change with an interactive widget, and let Hi3DGen + Trellis blend new geometry in. Runs entirely free in Google Colab, no local GPU required.
✓ 100% free — runs in Google Colab, no local GPU or install needed.Requirements
- Google account (free Colab tier works)
- A modern web browser — no local GPU needed
- A .ply mesh + a conditioning image to guide the edit
- Patience: ~10 minutes per cell run on a free T4
Setup steps
- Open the Colab notebook (button above) and sign in with your Google account.
- Run the setup cells from top to bottom to install Hi3DGen / Trellis and load the models.
- Upload your .ply mesh and a conditioning image when prompted.
- Use the interactive widget to paint the region of the mesh you want to inpaint / edit.
- Set Shape Guidance to 0.5–0.8 and tune the blur kernel size for softer mask transitions.
- Run the inpaint cell (about 10 minutes) and download the edited 3D mesh when it finishes.
Notes & tips
- Shape Guidance around 0.5–0.8 gives the most natural blend between old and new geometry.
- A larger blur kernel size softens the mask edges for smoother transitions.
- Cells can crash on heavier runs — just re-run the cell, it usually recovers.
- The script encodes meshes into Trellis latents, so ComfyUI / Blender plugins are feasible down the line.
More resources
- Hi3DGen + Trellis 3D inpainting notebook (Colab) https://colab.research.google.com/drive/1mSJympRtn6FRluc-DFFEoRMa4LBBGzw_
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