1. Structure from Motion Arrowsmith, Nissen, Saripalli http://robotics.asu.edu/

2. Littlerock Motorized kite (watch out for the wind!) $600 for kite

6. SFM-B4 difference Main differences are datum offset (~30 m) and positioning (using camera GPS)

7. Mulitview stereo and structure from motion applied to volcanic bomb, coastal cliff erosion, volcano caldera

8. Structure From Motion Procedure

9. Structure from Motion Calibrate Camera (“performed with the same images”) Take pictures which have some overlap Find points which are same in both images Determine how these points have changed between images Create a Digital Surface Model and 'drape' the images over the model (Texture Map) Software = AGISOFT PHOTOSCAN (<$3500)

10. Unmanned Aerial Vehicles also kites, balloons

11. Structure from motion using balloon aerial photography with Sri Saripalli $500 balloon plus gear

12. Lofting on He balloon Canon camera with GPS tagging and 2 second interval shooting Can lift a few kg

13. Solve for 6 camera positions (examples)

14. =16 pixels / m = ~25 cm dem Example 6 image DEM

15. Structure from motion orthophoto texturemap (also can generate <10 cm DEM) Click to start video