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ZFXY: a 3D spatio-temporal tiling scheme propos...

ZFXY: a 3D spatio-temporal tiling scheme proposal for optimized data access

UN Open GIS Initiative Monthly VTC, 2022-03

Hidenori FUJIMURA

March 16, 2022
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  1. ZFXY: a 3D spatio-temporal tiling scheme proposal for optimized data

    access Hidenori (UN Vector Tile Toolkit / Geospatial Information Authority of Japan)
  2. GSI secured budget for point cloud data (regular budget [2

    million USD] + external supplementary budget)
  3. Tile: industry standard in web maps {z}/{x}/{y} z: zoom index,

    x: west-east index, y: north-south index
  4. ZFXY: 3D extension to the tile-scheme {z}/{f}/{x}/{y} z: zoom index,

    f: height index, x: west-east index, y: north-south index
  5. f: height index, or floor-number index f = floor(n *

    h / H) where h = elevation [m], n = 2 ^ z, and H = 2 ^ 25 [m] Height of a voxel represented by a ZFXY with z=25 is 1 [m].
  6. ZFXY: 3D extension to the tile-scheme {z}/{f}/{x}/{y}/{t} z: zoom index,

    f: height index, x: west-east index, y: north-south index, t: temporal index
  7. Motivation of UNVT Community to join We need data to

    prove the value of ZFXY. We are happy to build prototypes with your data.