Indoor Mapping & Wayfinding Automation
Engineering reference for indoor mapping: floor plan parsing, wayfinding graphs, beacon positioning, accessibility routing, and Python automation pipelines.
Turn DWG/SVG drawings into routable, validated GeoJSON via... Architecture & Standards
Coordinate frameworks, vertical topology, POI taxonomy,... Production Deployment
Schemas, CI gating, SDK integration, cache invalidation,... Indoor Positioning
Radio maps, BLE trilateration, and particle-filter sensor...
About this site
Indoor mapping is not a flavor of outdoor GIS. Sub-meter precision, vertical topology, semantic enrichment, and deterministic routing pipelines all change the engineering surface area. This site is a production-focused reference for the engineers building those systems day to day.
Inside you will find runbooks for parsing native CAD (DWG/DXF), BIM (IFC), and SVG floor plans into validated, routable GeoJSON; coordinate-system patterns for multi-building campuses; Z-axis handling for elevators, escalators, and mezzanines; POI taxonomy design that survives contact with facilities reality; the CI gating, schema validation, and rollback machinery that keeps deployed indoor maps trustworthy; and the beacon and Wi-Fi fingerprinting positioning pipelines that place a moving user on that routing graph.
Every guide ships with annotated Python pulled from real pipelines — geopandas, shapely, networkx, ezdxf, rtree, pyproj — plus the validation, async batching, and SDK integration patterns that turn a one-off script into a service. The material targets facilities tech teams, GIS developers, indoor navigation teams, and Python automation builders.
Use the four colourful entry points above to jump into a section, or browse the topic cards below. Every page is offline-cached as a PWA, so you can keep the references with you on a site walk.
Explore the guides
Automated Floor Plan Parsing & Vectorization
Turn DWG/SVG drawings into routable, validated GeoJSON via deterministic vectorization pipelines.
Open guideIndoor Mapping Architecture & Standards
Coordinate frameworks, vertical topology, POI taxonomy, and resilient routing engines for indoor GIS.
Open guideProduction-Ready Indoor Map Deployment
Schemas, CI gating, SDK integration, cache invalidation, and rollback for live wayfinding services.
Open guideIndoor Positioning: Beacon & WiFi Fingerprinting
Radio maps, BLE trilateration, and particle-filter sensor fusion that place a user on the routing graph.
Open guideDive into a topic
Async Batch Processing Pipelines for Floor Plans
Build async batch pipelines that ingest hundreds of floor plans, delegate CPU-bound vectorization to process pools, and emit deterministic GeoJSON without OOM kills.
Read moreAttribute Mapping from Blueprints
Resolve blueprint text labels to room polygons and emit validated, schema-conformant indoor feature records using buffered spatial joins and confidence scoring in Python.
Read morePDF & Raster Floor Plan Extraction
Extract routable geometry from scanned PDF and raster floor plans: rasterization, deskew, denoise, scale calibration, and vector tracing into validated GeoJSON.
Read moreSVG/DWG Parsing Workflows
Parse DWG and SVG floor plans into one unit-aligned GeoJSON schema: ezdxf entity extraction, SVG transform flattening, Y-axis inversion, and topology validation in Python.
Read moreWall & Door Detection Algorithms
Detect walls and doors in raster and vector floor plans with Python: adaptive thresholding, contour vectorization, gap-based opening classification, and routing-graph validation.
Read moreAccessible & Multi-Profile Indoor Routing
Design accessible indoor routing: per-profile edge weights, step-free and assisted constraints, elevator preferences, and multi-profile graphs that share one topology.
Read moreFallback Routing Architectures for Indoor Navigation
Build deterministic degradation pathways for indoor routing graphs: topology reconciliation, vertical-transition fallback, and semantic POI routing in production Python.
Read moreIndoor Coordinate Reference Systems
Define, transform, and validate a facility-local indoor CRS in Python: metric scaling, orthogonal axes, surveyed origins, Z-datum alignment, and routing-ready coordinate output.
Read moreLevel Mapping & Z-Axis Logic
Normalize noisy CAD, BIM, and LiDAR elevations into discrete, routable indoor floor levels: clustering, Z-index assignment, and multi-level routing graph construction in production Python.
Read morePOI Taxonomy & Classification
Build a deterministic indoor POI classification pipeline in Python: a versioned taxonomy schema, pydantic validation, routing-weight assignment, spatial binding, and GeoJSON output ready for the routing graph.
Read moreCache Invalidation Strategies for Indoor Maps
Cache invalidation for indoor maps: propagate floor plan updates across CDN, edge nodes, and SDKs without routing anomalies or wayfinding fallback failures.
Read moreCI Gating for Map Updates
Gate indoor map updates in CI: schema, routing-graph topology, and API-contract checks that block broken floor plans before they reach live wayfinding.
Read moreJSON Schema Design for Indoor Maps
Design a Draft 2020-12 JSON Schema that validates indoor map GeoJSON: coordinate frames, routing-graph topology, and CI-gated structural contracts before deployment.
Read moreRollback Triggers & Versioning for Indoor Mapping Pipelines
Content-addressed versioning, telemetry-driven rollback triggers, and atomic reverts for indoor map artifacts — with Python for SHA-256 manifests, threshold evaluation, and zero-downtime CDN swaps.
Read moreSDK Integration Patterns for Indoor Maps
Integrate indoor map SDKs in production: payload contracts, version-negotiated cache sync, native bridge hydration, and graceful routing fallback for live wayfinding.
Read moreVector Tile Serving for Indoor Maps
Serve indoor maps as vector tiles: per-floor layer separation, tiling validated GeoJSON, level filtering, tile caching keyed on topology hash, and client styling.
Read moreBLE Beacon Positioning & Trilateration
Position indoors with BLE beacons: RSSI path-loss ranging, least-squares trilateration, geometry pitfalls, and fusing beacon fixes into a stable indoor position.
Read moreSnapping Positioning Fixes onto the Routing Graph
Bind noisy indoor position fixes to the routing graph: nearest-edge snapping, map-matching, off-graph rejection, and feeding a clean location to the wayfinding engine.
Read moreSensor Fusion & Particle Filters for Indoor Positioning
Fuse WiFi, BLE, and IMU signals with a particle filter for smooth indoor positioning: motion models, measurement updates, resampling, and wall-constraint likelihoods.
Read moreWiFi RSSI Fingerprinting & Radio Maps
Build and query WiFi RSSI fingerprint radio maps for indoor positioning in Python: survey grids, access-point feature vectors, kNN matching, and drift-resistant calibration.
Read more