{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08428_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Belton, Texas | 1902 | 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":"15"},{"label":"placed","value":"2"},{"label":"unplaced","value":"13"},{"label":"fit sources","value":"georef-snap 1, georef 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 31.05616,-97.46177 +/-187m); p1__2 (tier 1, 31.07487,-97.45283 +/-176m); p1__3 (tier 4, 31.05616,-97.46177 +/-187m); p1__4 (tier 4, 31.05616,-97.46177 +/-187m); p1__5 (tier 4, 31.05616,-97.46177 +/-187m); p1__6 (tier 4, 31.05616,-97.46177 +/-187m); p1__7 (tier 4, 31.05616,-97.46177 +/-187m); p2__2 (tier 1, 31.06336,-97.46300 +/-100m); p4__1 (tier 1, 31.05900,-97.45835 +/-100m); p4__2 (tier 1, 31.05750,-97.46235 +/-272m); p5 (tier 1, 31.05788,-97.46268 +/-265m); p6__1 (tier 4, 31.05616,-97.46177 +/-187m); p6__2 (tier 4, 31.05616,-97.46177 +/-187m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08428004:sb000020__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Belton, Texas | 1902 | sanborn08428_004 p2 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.70"},{"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":"8704.0"},{"label":"split_canvas_h","value":"10356.0"}],"created":"2026-10-19T03:27:50Z","modified":"2026-10-19T03:27:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08428004:sb000020__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08428004:sb000020","type":"ImageService3","width":2176,"height":2589},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"670.6,2432.4 670.3,2418.0 1227.0,2392.2 1587.8,2380.1 1918.6,2383.4 1916.5,2198.1 1946.2,2197.6 2145.4,2263.2 2050.3,2010.3 2057.8,182.4 1718.9,162.1 460.0,447.4 517.7,701.0 463.8,885.4 109.0,1387.7 119.6,2272.3 201.2,2254.1 281.3,2402.3 670.6,2432.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08428004:sb000020__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[751.0,1215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.46403850632143,31.055777452158463]}},{"type":"Feature","properties":{"resourceCoords":[751.0,2392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.46213972508106,31.055219533404543]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08428004:sb000030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Belton, Texas | 1902 | sanborn08428_004 p3","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.41"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T03:27:50Z","modified":"2026-10-19T03:27:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08428004:sb000030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08428004:sb000030","type":"ImageService3","width":2164,"height":2562},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"51.8,218.7 110.6,2485.2 2088.4,2491.1 2047.8,131.5 1488.7,109.9 1473.9,68.6 1279.1,1.0 1246.6,1.0 1245.7,184.9 915.9,176.3 555.7,182.6 1.0,199.4 1.0,213.9 51.8,218.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034bm:g08428004:sb000030/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.46246665502788,31.055185980873887]}},{"type":"Feature","properties":{"resourceCoords":[2164.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.46132278645798,31.05819988786122]}},{"type":"Feature","properties":{"resourceCoords":[2164.0,2562.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.45715714760777,31.05703986086768]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2562.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.45830101617767,31.054025953880345]}},{"type":"Feature","properties":{"resourceCoords":[80.0,180.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.4621317,31.0552159]}}]}}]}