Projects

A short list of open-source work I’ve authored or contributed to. The 3D-GIS pieces date from my Pusan National University · STEMLab years; the DBMS work is happening on private branches and lands upstream into CUBRID.

3D Spatial · GeoServer / GeoTools

A pair of extensions that lift the WFS → GeoTools → store stack to first-class 3D — see the FOSS4G 2017 talk for the design.

• geotools-3d-extension — ISO 19107-aligned 3D types for GeoTools (Solid, CompositeSurface, Triangle, TIN).
• geoserver-3d-extension — WFS 2.0 handlers and GML 3.2 output bindings that preserve 3D end-to-end.

SFCGAL · 3D operations

• SFCGAL4J — Java wrapper for SFCGAL packaged for the Maven ecosystem. The Java side of using CGAL/SFCGAL from a JVM-based GIS server. See also the PostGIS SFCGAL talk for what SFCGAL gets you from SQL.

Indoor space · OGC IndoorGML

A small ecosystem around the OGC IndoorGML standard for representing indoor space.

• InViewer — Three.js-based viewer for visualizing IndoorGML.
• InFactory — RESTful server and library to create / manage IndoorGML instances.
• InEditor — Web-based editor for drawing IndoorGML data.

Moving objects

• SIMOGen — Synthetic Moving Objects Generator for indoor spaces. Used for benchmarking and seeding test data for indoor trajectory queries.

Current — CUBRID DBMS

CUBRID is an open-source object-relational DBMS. My contributions land in the upstream repo:

• CUBRID/cubrid — main repo.
• Code analyses on the storage engine live on the docs site ↗.