{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04170_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Rochester, Michigan | 1908 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"8"},{"label":"placed","value":"4"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 3, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 42.67953,-83.13354 +/-212m); p4__2 (tier 1, 42.67973,-83.12964 +/-100m); p4__3 (tier 1, 42.67902,-83.13563 +/-100m); p4__4 (tier 1, 42.67903,-83.13854 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rochester, Michigan | 1908 | sanborn04170_004 p1 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.23"},{"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":"3786.0"}],"created":"2026-10-19T23:35:18Z","modified":"2026-10-19T23:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"896.9,421.1 883.2,429.4 882.8,594.9 897.2,595.2 912.3,726.4 955.0,763.7 1540.6,722.9 1561.3,454.5 1538.0,206.9 1461.2,74.4 1302.6,65.0 999.3,345.6 1000.5,360.9 848.0,229.7 848.0,212.9 715.6,352.9 715.7,367.8 848.9,363.1 897.2,362.6 896.9,421.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[403.0,681.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1344862,42.6782284]}},{"type":"Feature","properties":{"resourceCoords":[403.0,371.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1345227,42.6793801]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rochester, Michigan | 1908 | sanborn04170_004 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:35:18Z","modified":"2026-10-19T23:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1558.3,216.2 1555.1,988.4 1554.4,1144.6 1237.2,1409.5 1237.2,1398.4 926.3,1407.4 926.9,1348.2 609.9,1672.3 580.9,1672.4 572.1,1672.5 505.6,1876.3 132.6,1814.5 34.6,1363.2 36.2,282.8 86.4,85.8 576.2,41.1 864.7,49.5 944.3,110.6 1359.3,93.2 1550.6,135.4 1579.5,216.9 1558.3,216.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.13770560328814,42.6823859126538]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.13366996278394,42.68247232477275]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.13353180608732,42.67893585610506]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.13756744659152,42.67884944398611]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rochester, Michigan | 1908 | sanborn04170_004 p3","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:35:18Z","modified":"2026-10-19T23:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"134.4,1247.3 134.9,979.7 136.3,209.8 157.2,210.5 162.6,225.5 720.4,188.9 942.6,99.5 1109.7,155.2 1549.8,137.5 1547.8,1046.0 1627.0,1050.9 1627.0,1056.9 1627.0,1061.0 1023.6,1615.6 1026.1,1646.6 719.0,1381.0 719.2,1347.1 451.2,1628.6 451.2,1658.6 134.5,1658.5 134.2,1618.3 134.4,1247.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[720.0,938.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1323174,42.6807596]}},{"type":"Feature","properties":{"resourceCoords":[720.0,1650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1322704,42.6794488]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0004__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 | 1908 | sanborn04170_004 p4 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.95"},{"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":"2026-10-19T23:35:18Z","modified":"2026-10-19T23:35:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,53.9 1.0,1166.6 53.9,1198.2 67.5,1784.2 639.8,1741.3 738.3,1845.1 969.1,1865.6 1040.5,1346.9 1041.7,1346.8 1041.7,1344.5 1082.6,1344.2 1199.9,1336.6 1215.8,1279.2 1260.7,606.1 1260.7,571.0 1263.0,571.0 1263.5,564.6 1487.5,570.5 1525.5,499.2 1597.9,501.1 1599.8,171.7 1627.0,155.2 1627.0,38.8 1531.7,39.5 1266.5,48.0 954.0,48.0 953.6,8.4 953.6,1.0 83.5,1.0 32.6,53.7 4.3,53.8 1.0,53.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114rm:g041701908:04170_1908-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[954.0,670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1336947,42.6782443]}},{"type":"Feature","properties":{"resourceCoords":[954.0,48.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.133736,42.6794048]}}]}}]}