{
  "title": "Receding edges of The Ideal City and their best-fit vanishing point",
  "description": "The 15 receding edges measured on The Ideal City and 4 level control edges, with end points in scan pixels, the best-fit point, each edge's distance from it and the tolerance set before measuring.",
  "license": "CC BY 4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/",
  "creator": "Drawn Mathematics",
  "page": "https://drawnmathematics.com/perspective/one-point-perspective/",
  "derived_from": [
    "Walters Art Museum scan of The Ideal City (37.677) on Wikimedia Commons, file Fra Carnevale - The Ideal City - Walters 37677.jpg, 1798 × 651 px, sha1 e2ff76d8576eccdd8a618ed5d1d66d52f171c143",
    "Rule for choosing the edges and the 1% tolerance written down before fitting; best-fit point by least squares of perpendicular distances"
  ],
  "method": "Compiled by Drawn Mathematics from the data listed",
  "data_credit": [
    "Measured for this page on the Walters Art Museum's public-domain scan of The Ideal City (37.677), 1798 × 651 px"
  ]
}