Getting started with Structure from Motion (SfM) photogrammetry
Structure from Motion (SfM) photogrammetry method uses overlapping images to create a 3D point cloud of an object or landscape. It can be applied to everything from fault scarps to landslides to topography. This ...

Working with Point Clouds in CloudCompare and Classifying with CANUPO
This exercise will walk you through 1) basic operations and use in CloudCompare, and 2) use of an Open-Source plugin in CloudCompare called CANUPO (http://nicolas.brodu.net/en/recherche/canupo/) that allows for ...

Unit 1-SfM: Introduction to SfM
This unit introduces students to Structure from Motion (SfM). SfM is a photogrammetric technique that uses overlapping images to construct a 3D model of the scene and has widespread research applications in ...

3D View from a Drone | Make a 3D Model From Your Photos
Using cameras mounted to drones, students will design and construct an experiment to take enough photos to make a 3-dimensional image of an outcrop or landform in a process called structure from motion (SfM). This activity has both a hands-on component (collecting data with the drone) and a computer-based component (creating the 3-dimensional model).___________________Drones can take photos that can be analyzed later. By planning ahead to have enough overlap between photos, you take those individual photos and make a 3-dimensional image!In this activity, you guide the students to identify an outcrop or landform to study later or over repeat visits. They go through the process to plan, conduct, and analyze an investigation to help answer their science question.The Challenge: Design and conduct an experiment to take enough photos to make a 3-dimensional image of an outcrop or landform, then analyze the image and interpret the resulting 3-d image.For instance they might wish to study a hillside that has been changed from a previous forest fire. How is the hillside starting to shift after rainstorms or snows? Monitoring an area over many months can lead to discoveries about how the erosional processes happen and also provide homeowners, park rangers, planners, and others valuable information to take action to stabilize areas to prevent landslides.

Ground Control Points for Structure from Motion
This assignment uses real-time kinematic GNSS methods to establish ground control points used in the Day 3 Part 2: Analysis of River Characteristics structure from motion (SfM) activity. Day 3 Part 1 - This ...

Structure from Motion for Analysis of River Characteristics
In this assignment, students conduct a Structure from Motion (SfM) survey of the Sheep Draw field site along the Poudre River near Greely, CO. The end product is a point cloud used in additional assignments to ...

Point Cloud and Raster Change Detection
In this assignment, students difference point cloud and raster data sets to compare structure from motion (SfM) and terrestrial laser scanner (TLS) results. They interpret error in these methods used for ...

OpenTopography Data Sources and Topographic Differencing
In spring 2020, the world was hit by a pandemic that spread globally by March, causing universities and most of the world to move to remote means. Summer field camps, long hailed as a rite of passage in the ...