{
 "uri": "https://pdssp.github.io/pdssp-ontology/vocab#ProductTypeScheme",
 "flavour": "SKOS",
 "terms": {
  "ProductType-Anaglyph": {
   "label": "Anaglyph",
   "description": "A red-cyan stereo composite built from two observations of the same site from different look angles, intended for viewing with red-cyan 3D glasses. Not present in the USGS Thesaurus's \"product types\" facet at all -- a PDSSP addition.",
   "wider": [
    "ProductType-Image"
   ],
   "narrower": []
  },
  "ProductType-DigitalElevationModel": {
   "label": "Digital elevation model",
   "description": "A raster of elevation values, typically produced by stereo photogrammetry from two or more overlapping observations (see pdssp:Method-Photogrammetry).",
   "wider": [],
   "narrower": []
  },
  "ProductType-Image": {
   "label": "Image",
   "description": "A single raster image (e.g. one EDR/RDR observation), not yet mosaicked, ortho-rectified or elevation-derived.",
   "wider": [],
   "narrower": [
    "ProductType-Anaglyph",
    "ProductType-ImageMosaic",
    "ProductType-OrthoImage"
   ]
  },
  "ProductType-ImageMosaic": {
   "label": "Image mosaic",
   "description": "Two or more images combined into one composite raster covering a larger area.",
   "wider": [
    "ProductType-Image"
   ],
   "narrower": []
  },
  "ProductType-OrthoImage": {
   "label": "Orthoimage",
   "description": "An image that has been geometrically corrected (ortho-rectified) so its scale is uniform, typically by projecting it onto a digital elevation model (see pdssp:ProductType-DigitalElevationModel, pdssp:Method-Photogrammetry). The USGS Thesaurus only carries \"orthoimagery\" as a synonym -- of \"image collections\" (product types facet) and separately of \"aerial photography\" (methods facet) -- not as its own concept; this PDSSP addition gives it one, narrower than plain Image.",
   "wider": [
    "ProductType-Image"
   ],
   "narrower": []
  },
  "ProductType-PointCloud": {
   "label": "Point cloud",
   "description": "An unstructured set of 3D points (e.g. a LiDAR return set or a dense stereo-matching point cloud), before being gridded into a digital elevation model. Not present in the USGS Thesaurus's \"product types\" facet at all -- a PDSSP addition.",
   "wider": [],
   "narrower": []
  }
 }
}