{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04171_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Rockford, Michigan | 1911 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"5"},{"label":"placed","value":"2"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 43.11737,-85.55937 +/-199m); p2__2 (tier 2, 43.12003,-85.55824 +/-100m); p2__3 (tier 2, 43.12003,-85.55824 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041711911:04171_1911-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockford, Michigan | 1911 | sanborn04171_003 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.30"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-10-18T07:55:56Z","modified":"2026-10-18T07:55:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041711911:04171_1911-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041711911:04171_1911-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"82.5,1858.1 596.0,1883.7 642.5,1103.4 675.0,1099.0 675.0,1070.4 803.5,1069.5 898.0,1068.7 1014.7,1052.9 1059.2,536.4 1059.0,505.2 1061.9,505.1 1062.0,504.6 1589.0,481.6 1566.6,123.3 1496.0,39.2 1376.5,25.6 688.2,133.4 589.5,56.5 174.8,15.8 50.0,108.4 69.5,561.9 102.4,533.2 103.5,1066.5 98.0,1153.0 99.4,1639.0 95.6,1639.1 82.5,1858.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041711911:04171_1911-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1026.0,506.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.555736,43.120961]}},{"type":"Feature","properties":{"resourceCoords":[1026.0,1643.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.5557466,43.1187785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041711911:04171_1911-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rockford, Michigan | 1911 | sanborn04171_003 p2 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.63"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-10-18T07:55:56Z","modified":"2026-10-18T07:55:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041711911:04171_1911-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041711911:04171_1911-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1566.6,1843.5 1584.1,1620.0 1588.0,1620.0 1595.8,1123.2 1603.1,1035.0 1612.1,490.1 1577.9,518.8 1566.6,55.0 1557.9,61.2 423.4,29.8 142.1,104.6 63.2,577.5 59.7,1288.6 100.9,1411.3 431.0,1437.8 539.6,1374.8 754.6,1414.0 777.9,1443.0 778.7,1536.8 848.0,1889.5 1552.7,1842.5 1566.6,1843.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041711911:04171_1911-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1076.0,498.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.559544,43.120885]}},{"type":"Feature","properties":{"resourceCoords":[1588.0,1620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.5581834,43.1187924]}}]}}]}