# Data Sources - Dubai Metaverse

## Overview

This document lists all data sources for geospatial data, elevation data, and reference materials needed for the Dubai Metaverse project.

## Geospatial Data Sources

### OpenStreetMap (OSM)

**URL**: [openstreetmap.org](https://www.openstreetmap.org)

**Usage**: Building footprints, road networks, points of interest

**Data Format**: 
- OSM XML (.osm)
- GeoJSON
- Shapefile (via conversion)

**Extraction Methods**:
1. **Overpass API**: Query specific areas
2. **OSM Export**: Download area via export tool
3. **Python Scripts**: Use `osmnx` or `overpy` libraries

**Target Area**: Dubai Marina district
- Coordinates: [To be determined]
- Bounding box: [To be determined]

**Script**: `scripts/import_osm_data.py`

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### GIS Data Sources

#### Dubai Municipality GIS

**Source**: Dubai Municipality (if available)

**Usage**: Official building data, cadastral information

**Access**: May require permission/access

**Alternative**: Use OpenStreetMap if official data unavailable

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#### USGS EarthExplorer

**URL**: [earthexplorer.usgs.gov](https://earthexplorer.usgs.gov)

**Usage**: Satellite imagery, elevation data

**Data Types**:
- Landsat imagery
- ASTER GDEM elevation data
- SRTM elevation data

**Access**: Free registration required

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### Elevation Data

#### ASTER GDEM

**Source**: USGS EarthExplorer

**Resolution**: 30m

**Usage**: Terrain generation

**Format**: GeoTIFF

**Script**: `scripts/gis_to_unreal.py`

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#### SRTM

**Source**: USGS EarthExplorer

**Resolution**: 30m (SRTM-30) or 90m (SRTM-90)

**Usage**: Terrain generation (alternative to ASTER)

**Format**: GeoTIFF

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#### OpenDEM

**URL**: [opentopography.org](https://opentopography.org)

**Usage**: High-resolution elevation data

**Access**: Free registration required

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## Reference Materials

### Photography

#### On-Site Photography (If Available)

**Requirements**:
- High-resolution camera (DSLR or mirrorless)
- Multiple angles per building
- Consistent lighting
- Overlapping photos (70-80% overlap)

**Target Buildings**:
- Cayan Tower (hero landmark)
- Marina Towers
- Primary buildings (if accessible)

**Usage**: Photogrammetry, texture reference

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#### Stock Photography

**Sources**:
- Unsplash
- Pexels
- Shutterstock (if budget allows)
- Getty Images (if budget allows)

**Usage**: Reference images, texture sources

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#### Google Earth / Street View

**URL**: [earth.google.com](https://earth.google.com)

**Usage**: 
- Aerial views
- Street-level reference
- Building context
- Material reference

**Limitations**: 
- Image quality may vary
- Copyright considerations
- Not suitable for direct texture use

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### Architectural Plans

#### Public Records

**Source**: Dubai Municipality (if available)

**Usage**: Accurate building dimensions, layouts

**Access**: May require permission

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#### Online Resources

**Sources**:
- Building websites
- Architectural firm websites
- Real estate listings

**Usage**: Building information, dimensions

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## Data Processing Tools

### Python Libraries

- **osmnx**: OpenStreetMap data extraction
- **overpy**: Overpass API queries
- **rasterio**: GeoTIFF processing
- **gdal**: GIS data processing
- **shapely**: Geometric operations

### GIS Software

- **QGIS**: Free, open-source GIS
- **ArcGIS**: Professional GIS (if available)
- **Google Earth Pro**: Visualization and export

### Photogrammetry Tools

- **RealityCapture**: Professional photogrammetry
- **Luma AI**: Simplified photogrammetry
- **Agisoft Metashape**: Alternative photogrammetry

---

## Data Acquisition Workflow

### Step 1: OpenStreetMap Data

1. Identify target area (Dubai Marina)
2. Extract building footprints via Overpass API
3. Export to GeoJSON or Shapefile
4. Process and clean data
5. Import to Unreal (via script)

**Script**: `scripts/import_osm_data.py`

---

### Step 2: Elevation Data

1. Identify area coordinates
2. Download ASTER GDEM or SRTM data
3. Process elevation data
4. Convert to Unreal terrain format
5. Import to Unreal

**Script**: `scripts/gis_to_unreal.py`

---

### Step 3: Reference Materials

1. Collect photography (on-site or stock)
2. Organize by building/area
3. Use for modeling and texturing reference
4. Store in reference folder

---

## Data Organization

### Folder Structure

```
data/
├── osm/
│   └── dubai_marina.osm
├── elevation/
│   └── dubai_marina_dem.tif
├── references/
│   ├── cayan_tower/
│   ├── marina_towers/
│   └── buildings/
└── processed/
    └── [processed data files]
```

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## Data Validation

### Checklist

- [ ] OSM data covers target area
- [ ] Building footprints are accurate
- [ ] Elevation data matches area
- [ ] Reference materials are sufficient
- [ ] Data formats are compatible
- [ ] Data is properly organized

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## Legal Considerations

### Copyright

- **OpenStreetMap**: Open Database License (ODbL)
- **Photography**: Respect copyright, use licensed images
- **Architectural Plans**: May require permission

### Attribution

- **OpenStreetMap**: Attribution required
- **Other Sources**: Follow license requirements

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## Next Steps

1. Extract OpenStreetMap data for Dubai Marina
2. Download elevation data
3. Collect reference photography
4. Process and import data to Unreal
5. Validate data accuracy

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**Version**: 1.0
**Last Updated**: [Current Date]