Road Analysis Pipeline

Architecture

PostProcessing.pyt

UI + parameter logic for all 4 tools. RoadAnalysis class defines 26 parameters including 3 Voronoi centerline controls in a collapsible group.

UI Layer

_postproc_common.py

Shared pipeline phases (0,1,2,3,5,6,8): validation, extraction, majority filter, vectorization, geometry, enrichment, export.

Shared Core

_road_core.py

Road-specific: Phase 4a (Simplify + Dissolve), Phase 7 (nDSM + L + W classification), Phase 7.5 (Voronoi medial axis centerlines).

Road Pipeline

PostProcessing_RoadAnalysis_pyt.xml

ArcGIS Pro metadata: tool summary, usage, and parameter help text for every field in the tool dialog.

Metadata

Parameter	Default	Range	Purpose
Min Centerline Length	5.0 m	0.1–500	Removes short fragments after extraction
Max Hole Area to Fill	20.0 m²	0–500	Fills vehicle/shadow holes before Voronoi
Prune Factor	2.0×	0.5–10	Branch pruning threshold = factor × median road width
Densify Factor	5.0×	1–20	Boundary sampling interval = factor × cell size

Parameter	Default	Range	Purpose
Min Road Area	2.0 m²	0.1–10000	Removes tiny noise fragments
Max nDSM Height	0.5 m	0–10	Roads are ground-level — ceiling filter
Min Road Length (MBR_L)	3.0 m	0.1–500	Removes short non-road patches
Min Road Width (MBR_W)	1.5 m	0.1–50	Removes narrow non-road slivers
Majority Filter	FOUR, 1 pass	—	Salt-and-pepper noise removal
Simplify Tolerance	0.15 m	0.01–5	Douglas-Peucker boundary smoothing