{
  "schema": "spacetime.terrain-tradeoff-images/v1",
  "source_file": "../terrain.f32",
  "source_sha256": "996a01f14f93cc2d27a9e3386c5cef4558a27d3be68ffa1023ff08900714c0d1",
  "source_tiff_sha256": "b7c5c094915a628b74c1a0d72fcd612c6458b45f233256e849691c636ec61fcb",
  "fidelity_file": "../terrain-fidelity.json",
  "fidelity_sha256": "495d517182fd1e3b833eb79848909f714b5e2f9632ac271130c98063dc567593",
  "method": "endpoint-preserving bilinear resampling of pixel centers; downsample to each grid then reconstruct at all 512x512 source centers",
  "coarse_storage": "float32",
  "render": "shared hypsometric ramp and gradient hillshade; north up; same height/color scale for all images",
  "height_range_m": [
    166.681640625,
    1364.614990234375
  ],
  "images": [
    {
      "file": "reference-512.png",
      "sha256": "54d8cde7dcba04c42a1e4b17560d6b28f26fdd5572ca284464cdef92b895ce96",
      "bytes": 239387,
      "width": 512,
      "height": 512,
      "retained_grid": [
        512,
        512
      ],
      "role": "retained reference raster"
    },
    {
      "file": "reconstruction-256.png",
      "sha256": "12abdf0af4e0c91c79c9948455ad79c0b0d99359071f72d125c4bb6dcfc866ed",
      "bytes": 197197,
      "width": 512,
      "height": 512,
      "retained_grid": [
        256,
        256
      ],
      "role": "bilinear reconstruction of float32 coarse grid"
    },
    {
      "file": "reconstruction-128.png",
      "sha256": "bcaacd70b100a444c422335a4cbbcdb3445903510685896fd04d0efbeb2f6752",
      "bytes": 165399,
      "width": 512,
      "height": 512,
      "retained_grid": [
        128,
        128
      ],
      "role": "bilinear reconstruction of float32 coarse grid"
    },
    {
      "file": "reconstruction-64.png",
      "sha256": "e7f92bea9aa9d1c551ed7eee812d8631df625feaa2dcbc7b5de0942a8a776704",
      "bytes": 127207,
      "width": 512,
      "height": 512,
      "retained_grid": [
        64,
        64
      ],
      "role": "bilinear reconstruction of float32 coarse grid"
    },
    {
      "file": "reconstruction-32.png",
      "sha256": "39748a0731f13533b697b8cf284b754ed4177f153e21c7fcf8e40a0f731d1c97",
      "bytes": 94697,
      "width": 512,
      "height": 512,
      "retained_grid": [
        32,
        32
      ],
      "role": "bilinear reconstruction of float32 coarse grid"
    }
  ],
  "reproduce": "python scripts/benchmarks/render_terrain_tradeoff.py",
  "limitations": [
    "Presentation of retained terrain representation differences, not surveyed truth or navigation performance.",
    "All reconstruction metrics are verified against terrain-fidelity.json before rendering."
  ]
}