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Open Visualization Session Proposal: Mapterhorn Aggregating terrain and aerial imagery / satellite raster images from open-data source for interactive web maps #494

Description

@wipfli

Proposal

Topic of the session

Mapterhorn: Aggregating terrain and aerial imagery / satellite raster images from open-data source for interactive web maps

Type of the session

  • Collaborate
  • Workshop
  • Talk

Estimated duration of the session

30 min

Date and Time of the session

Any time

Level

  • Beginner
  • Intermediate
  • Advanced

Pre-requisite knowledge

GeoTIFF, map tiles, Web Mercator

Describe the session

Outline of the motivation behind Mapterhorn, challenges of getting data from government agencies, processing pipeline overview and discussion of bottlenecks.

As of June 2026, the pipeline transforms 15 TiB of input GeoTIFF elevation data into 10 TiB output terrarium-encoded terrain rgb PMTiles in roughly 2 weeks processing duration on a single host with an AMD Ryzen 9 7950X CPU with 16 cores / 32 threads.

Outlook into pipeline extension from terrain tiles to aerial imagery.

Session facilitator(s), Github handle(s) and timezone(s)

@wipfli CEST

Meeting notes and Virtual Meeting Link

Follow-up / Set-up sessions (if any)

Additional context (optional)


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