Joseph (Iosefa) “Sefa” Emile Honour Percival

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Joseph (Iosefa) “Sefa” Emile Honour Percival

Advocate link

Contact

  • Email: ipercival@gmail.com
  • Affiliation: University of Hawaiʻi at Hilo — Spatial Data Analysis & Visualization (SDAV) Lab
  • Location: Hilo, Hawaiʻi, USA

About

I am a postdoctoral researcher at the University of Hawaiʻi at Hilo in the Spatial Data Analysis & Visualization (SDAV) Lab. My research focuses on open, reproducible remote-sensing workflows (LiDAR, multispectral satellite, UAV photogrammetry) for tree-crown delineation, species mapping, fire ecology, and carbon/biomass estimation in tropical/subtropical forests (Hawaiʻi, Samoa, Madagascar).

OSGeo / FOSS4G Contributions

OSGeo Experience OSGeo charter.png OSGeo user.png
  • **pgRouting PSC**; contributor and workshop co-leader
  • **vrpRouting** contributor (vehicle routing & optimization)
  • Developer of open geospatial tooling for LiDAR/imagery (e.g., PyForestScan)
  • FOSS4G participant and speaker; training & community capacity-building

Skills / Interests

  • Routing & optimization (VRP, pgRouting, OR-Tools)
  • LiDAR & VHR imagery processing; segmentation & ML
  • PostGIS/pgRouting • PDAL • QGIS • Reproducible pipelines & teaching

Languages

English; Japanese (business/teaching); Samoan (conversational)

Profile last updated: 29 September 2025

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