Photosynth Ian Dreher
Photosynth
Ian Dreher
What is Photosynth?
• Microsoft Live Labs• Analyzes digital photographs and generates
3D model (photos, point cloud)• Point cloud? (common points between
images)
Capabilities
• Walk or Fly (Virtual tour)• Zoom (Seadragon)• Viewing Angles • See where photos were taken (geotag)
Process
• Analyzes multiple photographs
• Interest point detection
• Bundle adjustment (angle, distance, 3D position)
Digital Pictures From Morse Hall Office
Morse Hall Office Photosynth Viewer
Problems
Problem: Going around corners (Buildings)Solution: Take picture every 15 degree change
Problem: Exact Replication (Morse Hall)Solution: Take pictures from wider angles
West Facing Entrance East Facing Entrance
Nice and Synthy
Hawaii Photosynth
Thank You For Listening