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San Francisco City Hall

3D Projection Mapping

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The East Facade of City Hall was scanned and modeled for the purpose of projecting images onto the surface face of the building for an event and live concert staged in front of City Hall.  This technology is called “Projection Mapping” and requires a precise 3D computer model to create the projection video.

Using the Leica C10 Laser Scanner, the building facade was scanned in at high density to capture the building’s elaborate detail. The scans are processed and can be exported as a 3D point cloud or mesh model.

3D Polymesh Model
3D Polymesh Model

A 3D model can be exported for import into other 3D compatible programs for development of visualization techniques such as video animation, fly-throughs or gaming.

Once imported, the 3D model was created from the Point Cloud, replicating the building in detail, true to scale. The model was then exported to be used as the 3D template for creating the video projection show by the technical design team.

3D Model Rendered
3D Model Rendered
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3D Virtual Design Technology, Inc. services the Architectural, Engineering and Construction industry with reliable as-built surveys of the existing conditions using 3D Laser Scanning, Aerial drone surveys and 3D Photography to create digital 3D models and 2D documentation for renovation and construction projects. The innovative 3D capture is safer, faster and more accurate than most traditional methods of measuring, reducing project cost and the risk of errors.

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