Frank Dellaert

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4D Cities

• Frank Dellaert
• Georgia Institute of Technology
• Many collaborators
• Grant Schindler, Mingxuan Sun, Sing Bing Kang
• Supported by NSF, MSR,
• Microsoft RFP

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2003
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1920
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Problem
3D
Time
Images
4D Model
Inference
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4D Cities

• Urban Planning
• Historic Preservation
• Virtual Tourism
• Public Education
• Homeland Security
• Spatio-Temporal models as a new way to interact
  with a vast collection of imagery(i.e. 4D
  Photosynth)

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The Challenge !
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Hard Problem !
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Inferring Temporal Order
Observation Buildings are both created and
destroyed over time.
2D Point Correspondences
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Some Recent Resultswith Grant Schindler (GT) and
Sing Bing Kang (MSR)
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The Space of Solutions
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4D Photo Tourism