A. From images to 3D models: Photogrammetry and Structure from Motion concepts

Topic 2: Structure from Motion

Published

August 28, 2024

Outline:

principles of photogrammetry
UAS low range flight and consumer camera image acquisition
lateral and forward overlap, stereoscopic coverage
principles of Structure from Motion
3D reconstruction from multiple overlapping imagery

Lecture

Lecture Slides: Photogrammetry and SfM
Lecture Recording: Fall 2024 (NCSU Only)
In-Class Recording: Fall 2024 (NCSU Only)

Supplemental materials

Lecture Slides 2016, learn about history of aerial mapping
ISPRS 2016 paper on Reconstruction of Palmyra from tourist photos
ISPRS 2016 paper on Reconstruction of popular monuments from crowdsourced photos
Open Heritage - 3D models of iconic locations

Assignment

Perform an experiment to investigate impact of the number and orientation of photos, light, as well as shape and features of a photographed object on its 3D reconstruction from multiple overlapping imagery.

Lab Experiment: 3D reconstruction from multiple overlapping imagery

Homework

Prepare short report on your 3D modeling experiment.

3D models from previous courses are available on OsgeoLab Skechfab account. If you would like your model to be added to the collectionl please indicate at the end of your report “I agree for my 3D model to be uploaded to the OsgeoLab Skechfab collection and I want(/don’t want) my name to be listed as an author in the model description” and submit on through moodle your 3D model (preferably in the .obj format with accompaning .mtl and .jpg files, or check other formats supported by Sketchfab)