{
  "id": "svobody-plague-column",
  "title": "Morový sloup, náměstí Svobody, Brno",
  "type": "Approximate reference-based 3D reconstruction",
  "license": "CC BY-SA 3.0",
  "licenseUrl": "https://creativecommons.org/licenses/by-sa/3.0/",
  "attribution": "Brno plague column: approximate geometry reconstruction based on a photograph by Mercy from Wikimedia Commons (CC BY-SA 3.0).",
  "referencePhoto": {
    "title": "Náměstí Svobody, Brno - morový sloup.jpg",
    "author": "Mercy from Wikimedia Commons",
    "date": "2009-05-08",
    "source": "https://commons.wikimedia.org/wiki/File:N%C3%A1m%C4%9Bst%C3%AD_Svobody,_Brno_-_morov%C3%BD_sloup.jpg",
    "license": "CC BY-SA 3.0",
    "licenseUrl": "https://creativecommons.org/licenses/by-sa/3.0/"
  },
  "architecturalReference": "https://encyklopedie.brna.cz/home-mmb/?acc=profil-objektu&load=57",
  "modifications": "Manually constructed lightweight 3D geometry: stepped balustrade, arched grotto and grille, plinths, cartouches, profiled shaft, gilded Corinthian capital and approximate saints, Madonna and Child. No photograph pixels are embedded as textures.",
  "accuracy": "Not photogrammetry or a surveyed replica. Fine sculpture, dimensions and orientation are approximate. Overall height is about 12 m; no reliable published numeric height was found.",
  "placement": {
    "x": 20.8449,
    "z": -253.4026,
    "origin": "ground center",
    "upAxis": "Y",
    "horizontalRadiusMeters": 4.77,
    "approximateHeightMeters": 12
  },
  "commercialUse": true,
  "reuseNotes": "Preserve source attribution, identify the reconstruction changes, and retain CC BY-SA 3.0 for this reference-derived asset."
}