fbm_gradient — DRIVE terrain op

• Data kinds: image2d × image2d × table → any

• Call: import fullseye as fs; fs.ledger.fbm_gradient(x, y, p: 'dict') (to call the implementation directly, import driveterrain; driveterrain.fbm_gradient(x, y, p: 'dict'); from the registry, opsdrive.get("fbm_gradient"))

Usage

Closed form of (∂h/∂x, ∂h/∂y).

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_world_terrain — py -3.11 examples/poc_world_terrain.py

Ops the type connects to (they accept any as input)

course_crank · course_s_curve · course_turnaround · course_slope · course_intersection · course_parallel_parking · course_crossing · course_road

Same category (terrain)

perlin2 · fbm_params · fbm_height · radial_periodogram · spectral_slope · course_distance · terrain_params · terrain_height

*Provenance: driveterrain.py — DRIVE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.