{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02578_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Belmond, Iowa | 1939 | 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":"11"},{"label":"placed","value":"3"},{"label":"unplaced","value":"8"},{"label":"fit sources","value":"georef 2, snap:1 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p1__3 (tier 4, 42.84917,-93.61107 +/-295m); p2__1 (tier 1, 42.84450,-93.61317 +/-261m); p2__2 (tier 1, 42.84362,-93.61411 +/-100m); p2__3 (tier 1, 42.85193,-93.61359 +/-100m); p4__1 (tier 4, 42.84917,-93.61107 +/-295m); p4__2 (tier 4, 42.84917,-93.61107 +/-295m); p4__3 (tier 4, 42.84917,-93.61107 +/-295m); p4__4 (tier 1, 42.84598,-93.62541 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Belmond, Iowa | 1939 | sanborn02578_005 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.17"},{"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":"6452.0"},{"label":"split_canvas_h","value":"3734.8"}],"created":"2026-10-18T13:51:19Z","modified":"2026-10-18T13:51:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1258.3,97.5 1037.3,18.4 153.6,74.2 91.9,198.2 87.2,839.6 247.9,932.2 678.6,926.2 1010.8,834.5 1164.8,927.9 1404.5,929.0 1472.4,239.3 1419.1,66.0 1258.3,97.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.61281951839781,42.851740443470995]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.61329312503352,42.84856194714181]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,933.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.61578606197594,42.84876441366131]}},{"type":"Feature","properties":{"resourceCoords":[0.0,933.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.61531245534023,42.851942909990484]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Belmond, Iowa | 1939 | sanborn02578_005 p1 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.65"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3734.8"},{"label":"split_canvas_w","value":"4258.0"},{"label":"split_canvas_h","value":"3917.2"}],"created":"2026-10-18T13:51:19Z","modified":"2026-10-18T13:51:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"24.8,1145.1 43.5,1840.2 1.0,1910.3 1.0,1911.7 1060.9,1908.8 1028.9,948.5 75.7,951.9 24.8,1145.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[604.7,963.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.61037,42.8506826]}},{"type":"Feature","properties":{"resourceCoords":[604.7,1477.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.609051,42.8506865]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Belmond, Iowa | 1939 | sanborn02578_005 p3","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:51:19Z","modified":"2026-10-18T13:51:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"37.6,70.8 607.5,9.7 1549.7,34.4 1603.4,681.5 1591.8,1883.9 37.8,1863.9 37.6,70.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154bm:g025781939:02578_1939-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1077.0,1370.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.6090055,42.8459205]}},{"type":"Feature","properties":{"resourceCoords":[83.0,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.6116016,42.8449943]}}]}}]}