{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn05383_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Salem, New-Hampshire | 1904 | 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":"10"},{"label":"placed","value":"2"},{"label":"unplaced","value":"8"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 42.78406,-71.21824 +/-1291m); p1__2 (tier 4, 42.78406,-71.21824 +/-1291m); p1__3 (tier 4, 42.78406,-71.21824 +/-1291m); p2__2 (tier 4, 42.78406,-71.21824 +/-1291m); p2__3 (tier 4, 42.78406,-71.21824 +/-1291m); p2__4 (tier 4, 42.78406,-71.21824 +/-1291m); p2__5 (tier 4, 42.78406,-71.21824 +/-1291m); p3__2 (tier 4, 42.78406,-71.21824 +/-1291m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744sm:g3744sm_g053831904:05383_1904-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, New-Hampshire | 1904 | sanborn05383_003 p2 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.45"},{"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":"3802.0"}],"created":"2026-10-19T12:55:35Z","modified":"2026-10-19T12:55:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744sm:g3744sm_g053831904:05383_1904-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744sm:g3744sm_g053831904:05383_1904-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1600.8,488.0 1566.9,136.0 1378.8,33.5 1215.4,15.2 857.0,43.2 725.0,108.1 301.5,50.8 104.8,84.0 41.2,159.8 25.9,444.4 97.3,677.0 74.9,908.7 481.6,941.4 511.2,513.6 532.0,495.2 532.0,495.0 759.1,495.0 849.8,488.2 881.7,495.0 1016.5,495.0 1016.5,495.2 1016.5,507.6 1016.5,523.8 1043.1,529.5 1085.9,947.5 1555.0,944.9 1600.8,488.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744sm:g3744sm_g053831904:05383_1904-0002__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":[-71.23580677934528,42.78310909474341]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.23138543256866,42.78267350817526]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,950.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.2317359181376,42.7807674445511]}},{"type":"Feature","properties":{"resourceCoords":[0.0,950.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.23615726491423,42.781203031119254]}},{"type":"Feature","properties":{"resourceCoords":[1358.0,259.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.2321808,42.7822228]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744sm:g3744sm_g053831904:05383_1904-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, New-Hampshire | 1904 | sanborn05383_003 p3 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.25"},{"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":"2026-10-19T12:55:35Z","modified":"2026-10-19T12:55:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744sm:g3744sm_g053831904:05383_1904-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744sm:g3744sm_g053831904:05383_1904-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"948.1,711.3 1040.5,614.7 1516.2,560.1 1541.5,275.9 1449.9,122.5 1223.0,24.5 892.3,82.2 360.0,49.8 68.1,341.9 41.8,674.5 59.0,1743.5 75.5,1825.1 210.2,1838.9 337.1,1787.9 948.1,711.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd374m:g3744m:g3744sm:g3744sm_g053831904:05383_1904-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[222.0,244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.2048357,42.7872131]}},{"type":"Feature","properties":{"resourceCoords":[983.0,244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.2028237,42.7876695]}}]}}]}