velocity_deficit_map — DRIVE `swarmflow` op

• Data kinds: table → table

• Call: import fullseye as fs; fs.ledger.velocity_deficit_map(field, speed=None) -> 'dict' (to call the implementation directly, import swarmflow; swarmflow.velocity_deficit_map(field, speed=None) -> 'dict'; from the registry, opsdrive.get("velocity_deficit_map"))

Usage

Velocity field → deficit from the free stream 1 − u/U, lateral deflection v/U, speed deficit 1 − |v|/U. U is given, or the median of u over the upstream 15 % edge.

> The detailed description below is the original text — the summary and the headings are translated.

Returns:

dict: deficit・deflection・speed_deficit (H, W)(測れない格子は NaN)、speed(使った U)、x・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_swarm_obstacle_from_flow — py -3.11 examples/poc_swarm_obstacle_from_flow.py

Ops the type connects to (they accept `table` as input)

course_layout · course_occupancy · course_contains · world_build · world_camera · world_move · lidar_scan · rss_longitudinal_same

Same category (`swarmflow`)

sph_kernel · sph_density_pressure · swarm_simulate · swarm_render_overhead · swarm_field_from_tracks · swarm_field_from_piv · potential_flow_cylinder · stagnation_from_centerline

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

velocity_deficit_map — DRIVE swarmflow op