{ "schema": "eraweaver-scene-manifest.v1", "scene_id": "1893-wce-administration-building", "title": "Administration Building · World's Columbian Exposition · 1893", "status": "local-reconstruction-ready-review-required", "review_required": true, "coordinate_reference_system": "EPSG:4326", "palimpsest": { "layer": "palimpsest-layer.geojson", "anchor": { "lat": 41.77959801, "lon": -87.5798960788, "uncertainty_meters": null, "provisional_display_radius_meters": 180, "confidence_percent": 45, "basis": "Official City of Chicago CPD_Park_Art GIS point for the present Statue of the Republic; the Park District identifies it as installed on the former Administration Building site. GIS horizontal accuracy is not published; 180 m is a provisional display radius, not a measured error bound. Historic footprint alignment remains pending.", "coordinate_source": "https://data.cityofchicago.org/resource/pxyq-qhyd.json?objectid=73" }, "source_map": "https://www.loc.gov/resource/g4104c.ct002834/", "site_anchor_source": "https://www.chicagoparkdistrict.com/parks-facilities/statue-republic", "site_anchor_gis_source": "https://data.cityofchicago.org/resource/pxyq-qhyd.json?objectid=73" }, "photos": [ { "id": "loc-93506477", "file": "sources/administration-opening-day-1893.jpg", "title": "Administration building on opening day, May 1, 1893", "source": "https://www.loc.gov/pictures/resource/cph.3c07792/", "role": "front-waterline", "rights_status": "LOC record; verify item-level restrictions before publication", "restoration_status": "original-derivative" }, { "id": "loc-2016650686", "file": "sources/administration-exterior-ca-1893.jpg", "title": "Administration Building exterior", "source": "https://www.loc.gov/item/2016650686/", "role": "front-plaza", "rights_status": "LOC record states no known restrictions on publication", "restoration_status": "original-derivative" }, { "id": "loc-2024635970", "file": "sources/administration-from-agriculture-building-1893.jpg", "title": "Administration Building and Plaza from the Agriculture Building", "source": "https://www.loc.gov/item/2024635970/", "role": "elevated-oblique", "rights_status": "LOC record states no known restrictions on publication", "restoration_status": "original-derivative" }, { "id": "loc-94501516", "file": "sources/administration-southwest-view-1893.jpg", "title": "Southwest view with Administration Building in center background", "source": "https://www.loc.gov/item/94501516/", "role": "distant-context", "rights_status": "LOC record; verify item-level restrictions before publication", "restoration_status": "original-derivative" }, { "id": "loc-2017651056", "file": "sources/administration-stereograph-1893.jpg", "title": "Administration building stereograph", "source": "https://www.loc.gov/item/2017651056/", "role": "stereoscopic-front", "rights_status": "LOC record; verify item-level restrictions before publication", "restoration_status": "original-derivative" } ], "reconstruction_inputs": { "schema": "qurmmius-reconstruction-inputs.v3", "rights_basis": "Full primary research set from wce-source/manifest.json, including three additional public-domain research candidates from Wikimedia Commons/Newberry/NYPL records; item-level rights review remains pending before redistribution or commercial use.", "review_required": true, "source_manifest": "wce-source/manifest.json", "input_count": 24, "input_policy": "Primary reconstruction derivatives are hashed in /splats/reconstruction-manifest.json; supplemental context images are excluded from geometry fitting.", "note": "Full primary archival research batch plus three documented public-domain candidates. Relative-scale reconstruction hypothesis, not a surveyed or historically exact model." }, "restored_assets": [ { "id": "loc-2007663379-sky-candidate", "file": "../../references/loc-1893/wce-1893-sky-restoration-candidate.png", "source": "https://www.loc.gov/item/2007663379/", "method": "AI-assisted inferred sky edit", "claims": { "exact_pixel_recovery": false, "historical_sky_recovered": false, "generated_detail": true }, "review_required": true } ], "rendered_assets": [ { "id": "qurmmius-wce-photorealistic-v2", "file": "generated/wce-administration-photorealistic-v2.png", "method": "AI-assisted multi-view interpretive scene render", "source_photo_count": 24, "source_reference_note": "Regenerated presentation layer using the current 24-view rights-cleared primary research batch; archival images guide architecture and viewpoints while generated detail remains interpretive.", "source_role": "derived presentation layer", "claims": { "original_photograph": false, "exact_pixel_recovery": false, "survey_geometry": false, "generated_detail": true }, "disclaimer": "AI-generated interpretive reconstruction based on multiple archival reference photographs; not an original 1893 photograph or verified historical record.", "review_required": true } ], "immersive_environment": { "file": "generated/wce-immersive-environment-v2.png", "directional_plates": [ "generated/wce-immersive-left-v1.png", "generated/wce-immersive-right-v1.png", "generated/wce-immersive-rear-v1.png" ], "projection": "equirectangular-style environment sphere", "method": "AI-assisted 24-view multi-view interpretive environment plate", "purpose": "Photorealistic surrounding context for the walkable WebXR preview", "claims": { "original_photograph": false, "exact_historical_reconstruction": false, "generated_detail": true }, "review_required": true }, "rendering_policy": { "preferred_output": "photorealistic-interpretive-reconstruction", "multi_view_required": true, "disclaimer_required": true, "evidence_layer_remains_primary": true, "palimpsest_role": "Attach generated visuals as derived presentation layers; keep cited imagery, coordinates, and uncertainty separate." }, "vr_preview": { "status": "interpretive-walkable-preview", "viewer": "WebXR with desktop keyboard fallback", "entrypoint": "/eraweaver/scene/1893-wce/", "default_view": "photorealistic-environment", "alignment_guides_default": false, "locomotion": ["Standard gamepad left stick (viewer-relative)", "VR controller trigger hold", "WASD", "arrow keys"], "geometry_sources": ["qurmmius-local-reconstruction-v2-sift · 24-view primary batch", "approximate Qurmmius Palimpsest terrain anchor", "procedural fairground proxy"], "review_required": true, "disclaimer": "Walkable geometry and generated imagery are interpretive and should not be treated as an exact historical survey." }, "model": { "format": "ascii-ply-fallback", "status": "local-reconstruction-ready-review-required", "engine_id": "qurmmius-local-reconstruction-v2-sift", "reconstruction_manifest": "/splats/reconstruction-manifest.json", "expected_input_count": 24, "viewer_ready": true, "vertex_count": 2099, "confidence_percent": 49.7, "quality": { "total_candidate_matches": 8920, "triangulated_inliers": 2099, "successful_view_pairs": 58 }, "coordinate_frame": "reference-camera-relative; not survey georeferenced", "drop_in_paths": ["/splats/wce-administration.ply", "/splats/wce-administration-3dgs.ply", "/splats/wce-administration.splat"], "hotspots": "data/hotspots.json", "recommended_reconstruction": "Qurmmius local reconstruction engine; use KIRI/Blender only as an optional cross-check", "accepted_formats": ["ascii-ply-fallback", "binary_little_endian-3dgs-ply", "splat"], "note": "The local engine evaluates every distinct view pair with SIFT feature triangulation. The full 24-view primary-batch result is a reviewable reconstruction hypothesis, not a measured survey or historical proof; rights and calibration review remain pending." }, "audio": { "status": "gesture-gated-procedural-preview", "entrypoint": "/assets/eraweaver-audio.js", "web_audio_api": true, "autoplay": false, "review_required": true, "note": "The preview bed is synthetic and intentionally quiet; replace it with reviewed/licensed source recordings before public production release." }, "hotspots": [ { "id": "dome", "label": "Central dome", "description": "Administration Building dome and drum; visible in the front and elevated views.", "photo_ids": ["loc-93506477", "loc-2016650686", "loc-2024635970"], "confidence_percent": 80 }, { "id": "grand-basin-edge", "label": "Grand Basin edge", "description": "Waterline and plaza relationship used as a spatial cue for the Qurmmius Palimpsest anchor.", "photo_ids": ["loc-93506477", "loc-2024635970"], "confidence_percent": 62 }, { "id": "plaza", "label": "Front plaza", "description": "Visitor circulation and foreground structures; interpretation remains approximate.", "photo_ids": ["loc-2016650686", "loc-2017651056"], "confidence_percent": 55 } ] }