{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04170_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Rochester, Michigan | 1919 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"11"},{"label":"placed","value":"3"},{"label":"unplaced","value":"8"},{"label":"fit sources","value":"georef-snap 2, snap:0 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 42.67969,-83.13384 +/-227m); p1__2 (tier 1, 42.68220,-83.13754 +/-192m); p3__2 (tier 1, 42.68118,-83.12704 +/-100m); p4__2 (tier 1, 42.68227,-83.13218 +/-100m); p4__3 (tier 1, 42.68202,-83.12729 +/-100m); p5__1 (tier 2, 42.67610,-83.13576 +/-100m); p5__2 (tier 1, 42.68198,-83.13183 +/-108m); p5__3 (tier 1, 42.68076,-83.13169 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rochester, Michigan | 1919 | sanborn04170_006 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:27:18Z","modified":"2026-10-20T03:27:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1524.9,228.6 1564.5,228.6 1559.0,1253.8 1557.7,1660.1 1255.0,1664.6 1172.1,1660.5 600.0,1662.0 600.9,1864.8 308.4,1868.2 159.2,1806.5 161.5,1661.0 90.0,1615.4 51.3,1447.7 108.9,986.0 54.6,607.8 122.8,522.9 126.7,153.8 399.3,60.6 667.3,119.3 800.0,72.6 936.7,134.7 948.9,214.7 1167.4,221.2 1455.0,114.0 1525.1,168.6 1524.9,228.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.13778119817016,42.68241009511389]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.1336846698204,42.68250131980267]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.13353881735652,42.678911528398345]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.13763534570629,42.678820303709564]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rochester, Michigan | 1919 | sanborn04170_006 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"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":"2026-10-20T03:27:18Z","modified":"2026-10-20T03:27:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1126.8,1870.5 1230.7,1764.9 1346.3,1760.7 1370.1,1681.8 1522.6,1649.7 1611.7,1002.1 1582.1,755.8 1322.0,481.7 1186.0,434.9 1118.2,307.9 1103.0,296.3 1102.9,279.1 1013.9,112.6 797.4,106.9 636.2,196.6 64.9,224.9 1.0,175.2 1.0,234.3 39.2,234.2 37.5,1256.7 37.8,1662.0 349.9,1662.0 429.7,1658.8 701.6,1872.2 1126.8,1870.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[605.0,959.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.13234149466439,42.680745613308964]}},{"type":"Feature","properties":{"resourceCoords":[605.0,1668.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.13229434774517,42.6794212960978]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rochester, Michigan | 1919 | sanborn04170_006 p4 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"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":"2026-10-20T03:27:18Z","modified":"2026-10-20T03:27:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"25.4,235.4 82.2,234.9 36.0,542.2 50.9,1806.7 221.2,1869.8 540.0,1787.2 817.3,1868.3 876.6,1812.9 962.0,1837.3 1006.1,1379.2 1044.2,1356.0 1044.3,1330.7 1044.4,1325.5 1081.5,1325.2 1095.0,1325.1 1218.7,1249.8 1253.3,863.2 1425.9,854.6 1432.5,661.0 1499.4,591.4 1575.5,249.2 1626.7,249.4 1358.1,35.2 1278.7,37.9 968.3,35.5 670.3,38.9 588.6,34.6 25.3,34.2 25.4,235.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701919:04170_1919-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[957.0,656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.13371167151408,42.67823851649831]}},{"type":"Feature","properties":{"resourceCoords":[957.0,34.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.13376512957647,42.67940688130431]}}]}}]}