1. 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

2. Flow of the presentation Equipment needed Preparing the model for data extraction Capturing data using digital photography

3. 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

4. Preparing the model for data extraction Place a grid on the 3D model Image courtesy Giacomo Rambaldi/ARCBC

5. Preparing the model for data extraction Tilt the model Prepare the shooting environment Images courtesy Giacomo Rambaldi/CTA

6. Data capture Parallel camera movement Movement of the Digital Camera 3D model 4 m distance Image courtesy G. Rambaldi/ARCBC

7. Sequence of images Camera movement

8. Sample of extracted images Images courtesy Giacomo Rambaldi