displace_markers — DRIVE tacslip op

• Data kinds: matrix × matrix × matrix × scalar → matrix

• Call: import fullseye as fs; fs.ledger.displace_markers(pts, fx, fy, pitch: 'float') -> 'np.ndarray' (to call the implementation directly, import tacslip; tacslip.displace_markers(pts, fx, fy, pitch: 'float') -> 'np.ndarray'; from the registry, opsdrive.get("displace_markers"))

Usage

Moves marker centers (N, 2) [px] by the displacement field fx, fy (n, n) [m] (the field is bilinearly sampled at the center positions, converted to pixels and added). Raises ValueError: pts is not (N, 2), fx and fy differ in shape, pitch ≤ 0.

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_tacsim_marker_shear — py -3.11 examples/poc_tacsim_marker_shear.py

• poc_tactile_dipole_torque — py -3.11 examples/poc_tactile_dipole_torque.py

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

world_camera · lidar_scan · relative_motion · foe_from_motion · flow_from_depth_motion · ttc_truth · world_materials · mesh_signed_volume

Same category (tacslip)

mindlin_partial_slip · mindlin_traction · hertz_surface_ur · hertzian_tangential_inner · cerruti_kernel · cerruti_surface_displacement · membrane_shear_field · membrane_markers

*Provenance: tacslip.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.