{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn05812_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Castleton On Hudson, New-York | 1904 | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"},{"label":"pages","value":"3"},{"label":"placed","value":"1"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 2 panels"},{"label":"unplaced pages","value":"p2__1 (tier 1, 42.53180,-73.75634 +/-209m); p2__2 (tier 1, 42.52970,-73.75698 +/-198m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804cm:g3804cm_g058121904:05812_1904-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Castleton On Hudson, New-York | 1904 | sanborn05812_003 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.22"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:01:55Z","modified":"2026-10-22T13:01:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804cm:g3804cm_g058121904:05812_1904-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804cm:g3804cm_g058121904:05812_1904-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"335.6,1879.4 173.1,1782.3 58.3,1340.4 36.7,358.1 125.9,66.1 237.1,105.2 337.7,32.2 1038.8,33.4 1152.8,55.1 1125.0,99.4 1144.2,124.2 1193.8,117.0 1229.8,63.8 1483.0,82.8 1550.5,218.1 1591.9,740.9 1543.7,1580.4 1473.5,1619.1 1476.6,1733.5 1168.9,1698.8 618.9,1888.9 335.6,1879.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804cm:g3804cm_g058121904:05812_1904-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[821.0,887.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.75662844662844,42.52884105413568]}},{"type":"Feature","properties":{"resourceCoords":[1083.0,887.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.75604665341277,42.52870569486694]}}]}}]}