{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn05112_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Troy, Montana | 1920 | 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":"2"},{"label":"placed","value":"2"},{"label":"unplaced","value":"0"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 2 panels"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051121920:05112_1920-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Troy, Montana | 1920 | sanborn05112_002 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.85"},{"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":"7652.0"}],"created":"2026-10-18T02:44:14Z","modified":"2026-10-18T02:44:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051121920:05112_1920-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051121920:05112_1920-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1599.3,33.4 44.0,36.2 45.5,677.2 252.2,675.0 252.3,675.0 252.3,675.0 266.3,710.8 257.9,967.0 178.2,967.0 46.8,967.0 36.1,1032.7 34.8,1797.5 162.8,1887.7 158.8,1912.0 291.2,1912.0 340.5,1872.9 1610.2,1880.8 1599.3,33.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051121920:05112_1920-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1049.0,1484.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.8938575,48.4623648]}},{"type":"Feature","properties":{"resourceCoords":[293.0,1484.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.894645,48.4636707]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051121920:05112_1920-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Troy, Montana | 1920 | sanborn05112_002 p1 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"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":"2700.0"},{"label":"split_canvas_w","value":"1031.6"},{"label":"split_canvas_h","value":"1168.0"}],"created":"2026-10-18T02:44:14Z","modified":"2026-10-18T02:44:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051121920:05112_1920-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051121920:05112_1920-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"253.2,729.9 198.8,675.7 196.7,675.8 186.6,675.9 101.5,677.0 4.9,702.1 6.8,954.2 247.6,963.0 253.2,729.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254tm:g4254tm_g051121920:05112_1920-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,675.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.89611318968632,48.46376659736203]}},{"type":"Feature","properties":{"resourceCoords":[257.9,675.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.8958272260162,48.46332564951583]}},{"type":"Feature","properties":{"resourceCoords":[257.9,967.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.89658394101632,48.46311073706652]}},{"type":"Feature","properties":{"resourceCoords":[0.0,967.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-115.89686990468644,48.46355168491272]}},{"type":"Feature","properties":{"resourceCoords":[240.9,701.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.8959158,48.4633349]}},{"type":"Feature","properties":{"resourceCoords":[240.9,701.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-115.8959158,48.4633349]}}]}}]}