SkillHub

image-to-relief-stl

v0.1.0

Turn a source image (or multi-color mask image) into a 3D-printable bas-relief STL by mapping colors (or grayscale) to heights. Use when you have an image from an image-gen skill (nano-banana-pro, etc.) and want a real, printable model (STL) via a deterministic pipeline.

Sourced from ClawHub, Authored by ajmwagar

Installation

Please help me install the skill `image-to-relief-stl` from SkillHub official store. npx skills add ajmwagar/image-to-relief-stl

image-to-relief-stl

Generate a watertight, printable STL from an input image by mapping colors (or grayscale) to heights.

This is an orchestrator-friendly workflow: - Use nano-banana-pro (or any image model) to generate a flat-color image. - Run this skill to convert it into a bas-relief model.

Practical constraints (to make it work well)

Ask the image model for: - exactly N solid colors (no gradients) - no shadows / no antialiasing - bold shapes with clear edges

That makes segmentation reliable.

Quick start (given an image)

bash scripts/image_to_relief.sh input.png --out out.stl 
  --mode palette 
  --palette '#000000=3.0,#ffffff=0.0' 
  --base 1.5 
  --pixel 0.4

Grayscale mode

bash scripts/image_to_relief.sh input.png --out out.stl 
  --mode grayscale 
  --min-height 0.0 
  --max-height 3.0 
  --base 1.5 
  --pixel 0.4

Outputs

  • out.stl (ASCII STL)
  • optional out-preview.svg (vector preview via potrace; best-effort)

Notes

  • This v0 uses a raster heightfield meshing approach (robust, no heavy CAD deps).
  • The --pixel parameter controls resolution (smaller = higher detail, bigger STL).