Real images, transparent ratios, and the limits of geometric attribution.
Each sheet pairs a downloaded real reference image with a normalized math panel. The formulas use the current Atlas inputs and visibly preserve whether each field is a published dimension or a schematic comparison value. The diagram is not registered to the photograph; it is a visual explanation of the math. The St Paul's sheet also reports the locally acquired photogrammetry reconstruction separately from the published reference dimensions.
Real reference image · source page · rights pageMath panel uses the Atlas geometry inputs; it is not registered to the photograph.
L × W56 × 30 m
H / W0.6
L / W1.867
L / module7
floor area1680 m²
radial reach / W0.5
length: published dimensionspan: published dimensionheight: schematicradius: schematicmodule: schematicbayCount: schematic
Scan/model lead: Whole building identified; no authoritative open LiDAR or photogrammetric file located. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: unknown Geometry conclusion: not determined by geometry.
Real reference image · source page · rights pageMath panel uses the Atlas geometry inputs; it is not registered to the photograph.
L × W130.2 × 34 m
H / W1.103
L / W3.829
L / module11.322
floor area4426.8 m²
radial reach / W0.5
length: published dimensionspan: schematicheight: published dimensionradius: schematicmodule: schematicbayCount: schematic
Scan/model lead: Chartres laser-analysis work is documented for architectural geometry; no open whole-building point cloud was downloaded. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: multiple medieval builders; individual constructor not identified here Geometry conclusion: not determined by geometry.
Scan/model lead: Whole church identified; no authoritative open interior/exterior scan located. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: unknown Geometry conclusion: not determined by geometry.
Scan/model lead: Whole church identified; no open, scale-controlled scan located. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: unknown medieval carpenters and builders Geometry conclusion: not determined by geometry.
Scan/model lead: Public photogrammetric model is viewable; it was not treated as a measured survey or downloaded as raw data. open lead
Public 3D metadata: 237973 vertices · 440478 faces · CC Attribution · raw download flag: yes. These counts are topology metadata, not metric dimensions. API record
Documentary attribution: No named designer or builder is established in this current source set. Construction team: unknown; do not treat the geometric model author as the historical builder Geometry conclusion: not determined by geometry.
Scan/model lead: The UBC Image Matching Challenge page documents an interior image-matching dataset with reconstructed 3D points, but its download page notes that Hagia Sophia Interior was removed in 2022 because of data inconsistencies. It is therefore not treated as a current open download or a complete architectural scan. open lead
Documentary attribution:
architects/designers: Anthemios of Tralles and Isidoros of Miletus (evidence)
Construction team: not identified in the current source Geometry conclusion: not determined by geometry.
Scan/model lead: A CC0 digital model is advertised by the 3D Repository of Hochschule Mainz; it is a reconstructed model, so scale and survey lineage must be checked before metric use. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: medieval building teams; individual constructor not identified here Geometry conclusion: not determined by geometry.
Scan/model lead: Durham Chapter House has a documented laser-scan/BIM survey; it covers a major component, not the whole cathedral. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: unknown in the current source set Geometry conclusion: not determined by geometry.
Construction team: workshops and stonecutters are implied by the staged project; a single constructor is not supported Geometry conclusion: not determined by geometry.
Scan/model lead: Laser-survey documentation and geometric analysis are publicly described; no raw whole-building point cloud was located. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: multiple medieval masters; exact role attribution requires a dedicated architectural-history source Geometry conclusion: not determined by geometry.
Scan/model lead: A peer-reviewed ISPRS paper documents a terrestrial laser-scanning project; no raw point cloud was located in the public paper record. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: multiple medieval and modern builders followed the design over centuries; this register does not collapse them into one name Geometry conclusion: not determined by geometry.
Scan/model lead: The main portico has a documented laser-scan and photogrammetric survey; it is partial coverage rather than a complete cathedral scan. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: Arab-Norman workshops and later builders; individual constructor not established here Geometry conclusion: not determined by geometry.
Scan/model lead: Andrew Tallon's laser-analysis projects provide geometric precedent for Saint-Denis; no open whole-building point cloud was located. open lead
Documentary attribution:
patron/abbot associated with the Gothic rebuilding: Abbot Suger (evidence)
Construction team: not identified in the current source Geometry conclusion: not determined by geometry.
Scan/model lead: NIKU documents detailed laser scanning of Urnes and the public model/scan references support visual study; a raw full-building point cloud was not downloaded. open lead
Public 3D metadata: 326753 vertices · 650382 faces · license not stated in API metadata · raw download flag: no. These counts are topology metadata, not metric dimensions. API record
Documentary attribution: No named designer or builder is established in this current source set. Construction team: unknown medieval carpenters and carvers Geometry conclusion: not determined by geometry.
Scan/model lead: The Church of the Transfiguration is documented as laser-scanned and measured; no public raw point cloud was located. open lead
Documentary attribution: No named designer or builder is established in this current source set. Construction team: unknown carpenters and builders; later attribution legends require separate verification Geometry conclusion: not determined by geometry.
Scan/model lead: A Palladio Museum digital model records a laser-scanner workflow, photographs, surveys, and an exportable model route; the model was not mirrored here. open lead
Scan/model lead: No authoritative open LiDAR or photogrammetric dataset for the exact Il Redentore church was located; similarly named crypt or project models were excluded. open lead
Real reference image · source page · rights pageMath panel uses the Atlas geometry inputs; it is not registered to the photograph.
L × W169.2 × 75 m
H / W1.488
L / W2.256
L / module14.1
floor area12690 m²
radial reach / W0.4
length: published dimensionspan: published dimensionheight: published dimensionradius: schematicmodule: schematicbayCount: schematic
Scan/model lead: A recent measured drone survey covers the exterior and roof. The UBC Image Matching Challenge sequence is acquired locally as photogrammetry: 615 source images, 615 dense depth maps, and a 98,872-point COLMAP sparse reconstruction. A separate public Zenodo GLB is also acquired for rough interior/crypt coverage. These are not LiDAR and do not by themselves establish complete interior/exterior survey control; Wren's drawings provide documentary design evidence. open lead
Acquired inside/out evidence: 615 calibrated images · 98,872 sparse 3D points · 615 dense depth maps · 446,067,546 positive depth values read · 1,837,701-vertex / 2,500,000-face interior/crypt GLB mesh. The robust sparse native-coordinate principal-axis ratios are 2.256 : 1.432; these are unscaled photogrammetry/model statistics, not metric LiDAR or constructor attribution. scene measurement
Scan/model lead: A TU Wien/B2FIND record describes an interior/exterior mesh from laser scanning and photogrammetry; access is by contacting the data provider. open lead
Documentary attribution:
architectural project: Fischer von Erlach family; exact role split requires source-page verification (evidence)
Construction team: not identified in the current source Geometry conclusion: not determined by geometry.
Scan/model lead: A public Sketchfab study model is viewable and marked CC Attribution; it is not treated as a scale-controlled survey without model metadata. open lead
Public 3D metadata: 1952 vertices · 3880 faces · CC Attribution · raw download flag: yes. These counts are topology metadata, not metric dimensions. API record
Scan/model lead: Public low-poly and scan/map models are viewable; no authoritative scale-controlled open survey was located. open lead
Public 3D metadata: 3106 vertices · 5882 faces · CC Attribution · raw download flag: yes. These counts are topology metadata, not metric dimensions. API record
Scan/model lead: Public study models are viewable; no open scale-controlled LiDAR or photogrammetric dataset was located. open lead
Public 3D metadata: 47356 vertices · 85373 faces · license not stated in API metadata · raw download flag: no. These counts are topology metadata, not metric dimensions. API record
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