{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn06703_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Gahanna, Ohio | 1922 | 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":"2"},{"label":"placed","value":"1"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 2 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 40.02030,-82.87836 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084gm:g4084gm_g067031922:06703_1922-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gahanna, Ohio | 1922 | sanborn06703_001 p1 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.84"},{"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":"2026-10-22T13:07:27Z","modified":"2026-10-22T13:07:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084gm:g4084gm_g067031922:06703_1922-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084gm:g4084gm_g067031922:06703_1922-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"79.8,61.7 64.2,1892.5 702.4,1813.9 947.0,1905.4 1573.5,1892.9 1561.6,1448.6 1292.5,1444.5 1291.0,1444.5 1291.0,1444.4 1278.1,1300.5 1244.0,1248.0 1085.5,1029.0 1064.7,1000.2 999.4,910.0 999.5,910.0 999.4,910.0 1020.3,903.3 1566.2,879.7 1574.0,48.1 79.8,61.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084gm:g4084gm_g067031922:06703_1922-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[878.0,1201.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.878227,40.019851]}},{"type":"Feature","properties":{"resourceCoords":[878.0,1762.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.8782856,40.0188131]}}]}}]}