66 lines
2.5 KiB
Markdown
66 lines
2.5 KiB
Markdown
# Paris Eiffel Tower — Seine Golden Hour
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**Full Cesium → Living Replacement benchmark.** Tests every layer of the geo-world pipeline.
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## Source
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- **File**: Flickr, Sony A7 III, 24mm f/5.0
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- **Date**: 2022-06-25 20:17 (golden hour, ~90min before sunset)
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- **Location**: South bank of Seine, Quai de Branly
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- **Coordinates**: 48.8577 N, 2.3011 E
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- **Altitude**: ~33m above sea level
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## Scene Characterisation
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| Property | Value |
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|----------|-------|
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| Environment | Outdoor |
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| Domain | CESIUM (GEO + SKY + WATER) |
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| Setting | Urban river, Paris |
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| Time of Day | Golden hour (~20:17, June) |
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| Season | Summer |
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| Weather | Clear with high stratus |
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| Mood | Serene, warm, golden |
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## Key Elements (27 total — see breakdown.md)
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1. **Eiffel Tower** — hero element, lit golden by low western sun
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2. **Seine river** — foreground, light chop, sky/gold reflections
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3. **Sky gradient** — warm horizon to blue zenith, thin stratus + cumulus
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4. **Pont de Bir-Hakeim** — stone arch bridge, left of frame
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5. **Tour boats** — white hull, moored at quay, string lights
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6. **Tree line** — Champ de Mars, 15-20 mature deciduous trees
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7. **Haussmann buildings** — cream stone, mansard roofs, behind trees
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8. **Street furniture** — lamps, bollards, signs, closed cafe
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## Replacement Layers (Cesium → Living)
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| Layer | Cesium (static) | Living Replacement |
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|-------|----------------|-------------------|
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| Sky | None (no sky in tiles) | SkyAtmosphere + VolumetricCloud |
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| Water | Baked blue texture | UE5 Water Body (Seine, reflections, ripple) |
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| Lighting | Baked shadows | DirectionalLight, golden hour sun angle |
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| Vegetation | Frozen trees | UE5 Foliage (wind, proper materials) |
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| Boats | Static mesh | Spawned props (optional animation) |
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## Cesium Setup
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```json
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{"type": "spawn_cesium_world", "latitude": 48.8577, "longitude": 2.3011, "altitude": 0}
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{"type": "set_camera_geo", "latitude": 48.8577, "longitude": 2.3011, "height": 5, "pitch": 5, "yaw": 340}
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```
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## Brain Config
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```bash
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python -m brain \
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--reference benchmark/references/urban/paris-eiffel/reference.jpg \
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--domain CESIUM \
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--llm claude-code \
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--mcp-port 30012 \
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--max-iterations 30
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```
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## What Success Looks Like
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- Eiffel Tower visible and correctly lit golden from the west
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- Seine has reflective water surface with gentle ripple (not baked texture)
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- Sky gradient from warm horizon to blue zenith with cloud layers
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- Golden hour colour temperature (~3000-3500K direct, ~7000K fill)
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- Atmospheric perspective on distant elements
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- Overall mood matches: serene, warm, golden Paris evening
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