2019 Geological Society of America Annual Meeting Short Course, Phoenix, AZ
510. High Resolution Topography and 3D Imaging II: Introduction to Structure from Motion (SfM) Photogrammetry.
Sat., 21 Sept., 8 a.m.–5 p.m
Room 103AB, West Building, Phoenix Convention Center
Instructors: Ramon Arrowsmith & Tyler Scott, Arizona State Univ. & Christopher Crosby, UNAVCO
Supported by: UNAVCO & OpenTopography
Abstract: Structure from Motion (SfM), a photogrammetric technique that uses overlapping images to construct 3D surface models, is quickly emerging as a valuable research and education tool in geodesy, geomorphology, structural geology, and related disciplines. Images can be collected with a standard consumer-grade camera, making SfM a low-cost tool that compliments other 3D imaging technologies, such as terrestrial and airborne laser scanning (lidar). SfM can be collected from a handheld camera or an airborne platform such as an aircraft, tethered balloon, kite, or UAS (unmanned aerial system), enabling 3D imaging of features ranging in size from decimeters to several kilometers. This one-day course will provide faculty, students, and professionals with an introduction to SfM technology, data collection and processing, and examples of science and educational applications. A combination of lectures and hands-on demonstrations of SfM equipment and data processing will be used.
Software - please come with these software packages installed on your machine:
- Professional Edition of Agisoft Metashape (Commercial, multi-platform. We will use the free demo mode in this short course.)
- CloudCompare (multi-platform, open source software. Recommend the Latest stable release (2.10.2 Zephyrus))
- LIME: Visualisation and Interpretation Software (Windows only. Free for academic use.)
8:00 AM Welcome & Course Introduction
8:30 AM Intro to SfM & scientific motivations – high-resolution topography and 3D imaging
9:30 AM Break
9:45 AM Faraglione, Vulcano Island, Sicily, Italy demo
10:45 AM Overview of SfM data acquisition concepts
12:00 PM Lunch on your own. While out, take some pictures for afternoon session, start moving images off your phone.
1:00 PM Hands-on demonstration of SfM workflow: Participants photograph objects near short course venue, transfer images to computer, process data to simple 3D models using AgiSoft PhotoScan software.
Show and tell of the models
2:15 PM Mafala Bolo, Ethiopia georeferencing exercise
3:30 PM LIME demo
As time allows:
5:00 PM Adjourn