{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03376_029.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"New Orleans, Louisiana | 1951 | key map | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd401m:g4014m:g4014nm:g03376195105:03376_05_1951-0000__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"New Orleans, Louisiana | 1951 | sanborn03376_029 p0 [1]","metadata":[{"label":"streets","value":"63"},{"label":"intersections","value":"559"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6078.5"},{"label":"split_canvas_h","value":"8572.7"}],"created":"2026-09-21T09:20:29Z","modified":"2026-09-21T09:20:29Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd401m:g4014m:g4014nm:g03376195105:03376_05_1951-0000__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd401m:g4014m:g4014nm:g03376195105:03376_05_1951-0000/info.json","type":"ImageService2","height":8152,"width":5648},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3648.7 -0.0,3772.1 0.0,4025.5 -0.0,4943.3 0.0,8572.7 5394.4,8572.7 6078.5,8572.7 6078.5,0.0 3818.4,0.0 3146.9,0.0 2817.4,0.0 2845.5,2414.2 0.0,2508.2 0.0,3121.1 -0.0,3648.6 -0.0,3648.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd401m:g4014m:g4014nm:g03376195105:03376_05_1951-0000__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2043.7,5403.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.114746,29.921929]}},{"type":"Feature","properties":{"resourceCoords":[5546.8,4191.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.0953634,29.936376]}}]}}]}