CityGML Viewer

The CityGML Viewer ingests CityGML data and provides structural analysis and visualization of 3D city models. It supports common CityGML Levels of Detail (LOD0–LOD4) and a range of geometries such as walls, roofs, and surfaces. The tool emphasizes data integrity, lineage, and attribute visibility, enabling researchers and practitioners to inspect geometry, topology, and semantic attributes without manual parsing.
Conceptually, the tool parses the GML into a streaming pipeline, builds a spatial index, and performs coordinate transformation to a common CRS. It generates a compact model summary (feature counts, extents, unique attributes) and supports filtering by bounding box or attribute criteria. Advanced users may configure CRS transformations, export subsets, or prepare data for downstream workflows.
Benefits include faster validation of large urban models, reproducible comparisons across datasets, and a lightweight workflow for urban planning, environmental studies, and architectural analysis. Unique value comes from combining CityGML-aware parsing with non-destructive summaries and streaming handling to scale to large city datasets.
Core features include CityGML compatibility, streaming parsing, LOD-aware geometry handling, spatial querying, basic attribute inspection, and export-ready summaries. Use cases include model validation, change detection between model versions, and data provisioning for GIS and BIM pipelines.