README.md

metadata

license: cc-by-4.0
task_categories:
  - image-to-3d
  - text-generation
tags:
  - cad
  - cadquery
  - synthetic
  - benchmark
size_categories:
  - 1K<n<10K

CAD Synthesis Benchmark — test_bench

Small-scale benchmark for image → CadQuery code generation.

Task: Given rendered views of an industrial part, generate CadQuery code that reproduces it.

Evaluation: Execute code → export STEP → compute IoU vs GT STEP.

Splits

Split	Families	Description
test-iid	54 train families, XY plane	In-distribution test
test-ood-family	19 held-out families	Family generalization
test-ood-plane	54 train families, XZ/YZ	View generalization

OOD families: bellows, worm_screw, torus_link, impeller, propeller, chair, table, snap_clip, waffle_plate, wire_grid, mesh_panel, t_pipe_fitting, pipe_elbow, duct_elbow, dome_cap, capsule, coil_spring, bucket, nozzle

Sample Fields (bench_manifest.jsonl)

{
  "stem": "synth_handwheel_000042_s9999",
  "family": "handwheel",
  "difficulty": "easy",
  "base_plane": "XY",
  "split": "test-iid",
  "feature_tags": {"has_hole": true, "has_fillet": false, "has_chamfer": false},
  "feature_count": 1,
  "ops_used": ["circle", "extrude", "union", "cut"],
  "gt_code_path": "data/test-iid/synth_handwheel_000042_s9999/code.py",
  "gt_step_path": "data/test-iid/synth_handwheel_000042_s9999/gen.step",
  "composite_png": "data/test-iid/synth_handwheel_000042_s9999/views/composite.png"
}

Metrics

• exec_ok: code executes (0/1)
• iou: voxel IoU vs GT STEP
• feature_f1: F1 of feature_tags (hole/fillet/chamfer/slot)
• detail_score: 0.4 × iou + 0.6 × feature_f1 (primary ranking metric)

Generation

• Pipeline: cad_synth (73 families, parametric, multi-plane)
• Seed: 9999 (held out from training seed 1337)
• Rendered: 4-view normalized PNGs + 2×2 composite