Support the spread of “good practice” in generating, managing, analysing and communicating spatial information
Data Capture Using Digital Photography
By: Giacomo Rambaldi and Jeroen verplanke
Unit: M10U04
Flow of the presentation
• Equipment needed• Preparing the model for data extraction• Capturing data using digital photography
Equipment needed
• High resolution digital single lens reflex (SLR) camera
• Top quality lens with adjustable zoom and manual zoom and focus options
• Tripod• Plumb line• Coloured yarns• Nails / push pins
Preparing the model for data extraction
• Place a grid on the 3D model
Image courtesy Giacomo Rambaldi/ARCBC
Preparing the model for data extraction
• Tilt the model• Prepare the shooting
environment
Images courtesy Giacomo Rambaldi/CTA
Data capture
• Parallel camera movement
Mov
emen
t of t
he
Dig
ital C
amer
a
3D m
odel
4 m distance
Image courtesy G. Rambaldi/ARCBC
Sequence of images
Camera movement
Sample of extracted images
Images courtesy Giacomo Rambaldi