{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03376_028.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"New Orleans, Louisiana | 1950 | key map | mapsnap generated fit (2026-10-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-24"},{"label":"run","value":"corpus-v2.2"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014nm:g03376195004:03376_04_1950-0000__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 | 1950 | sanborn03376_028 p0 [1]","metadata":[{"label":"streets","value":"55"},{"label":"intersections","value":"241"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6086.5"},{"label":"split_canvas_h","value":"8572.6"}],"created":"2026-10-24T15:07:53Z","modified":"2026-10-24T15:07:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014nm:g03376195004:03376_04_1950-0000__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014nm:g03376195004:03376_04_1950-0000","type":"ImageService3","width":1414,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1414,0.0 667.4,0.0 678.7,631.5 0.0,636.5 0.0,2038 1414,2038 1414,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014nm:g03376195004:03376_04_1950-0000__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1226.5,1043.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.0815216,29.9444632]}},{"type":"Feature","properties":{"resourceCoords":[587.4,1007.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.0919188,29.9292818]}}]}}]}