Introduction to Photogrammetry

September 2020

Philo van Kemenade @phivk

Netherlands Institute for Sound and Vision

Storytellers United

@storyunite

3D scanning

Photogrammetry

The science of making measurements from photographs

Using software to construct 3D models from sets of photographs (or video frames)

Structure from Motion

Photogrammetry

recognizes key points
shared across a set of images

Accessibility

Affordability

Accuracy

Photogrammetry  vs

other techniques

⭐️⭐️⭐️⭐️⭐️

⭐️⭐️⭐️⭐️⭐️

⭐️⭐️⭐️

(e.g. laser based)

Capturing Scenarios

Fixed zoom level

Fixed white balance

Fill the frame

Fully in focus

Evenly lit

Camera settings

Ensure at least 50% overlap

Approx 30 - 50 photos give decent results

Think: photos as data
Avoid blind spots

Photo taking

hard to scan...

transparent things

reflective
things

thin
parts

comparisons = combinations

3

3

4

6

5

10

2

1

combinatorial explosion

in this together

Shared notepad

bit.ly/storyfutures2020pad

Cheat Sheet

bit.ly/agisoftcheatsheet

Thanks

These folks have provided helpful input into this workshop:

James George & Alexander Porter @scatterco
Lesley Johnston @LesleyJohnston_
Daniel Livingstone @gsofasimvis
Anna Desponds

Shoe Photos by Jake Ingle, Sylwia Bartyzel, Alex wong, Apostolos Vamvouras
on Unsplash