Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Taming Terrain: Sculpting Geoscapes With LiDAR
Search
Andrew Godwin
August 31, 2018
0
300
Taming Terrain: Sculpting Geoscapes With LiDAR
A presentation I gave at Electromagnetic Field 2018
Andrew Godwin
August 31, 2018
Tweet
Share
More Decks by Andrew Godwin
See All by Andrew Godwin
Reconciling Everything
andrewgodwin
1
320
Django Through The Years
andrewgodwin
0
210
Writing Maintainable Software At Scale
andrewgodwin
0
450
A Newcomer's Guide To Airflow's Architecture
andrewgodwin
0
360
Async, Python, and the Future
andrewgodwin
2
680
How To Break Django: With Async
andrewgodwin
1
730
Taking Django's ORM Async
andrewgodwin
0
730
The Long Road To Asynchrony
andrewgodwin
0
660
The Scientist & The Engineer
andrewgodwin
1
770
Featured
See All Featured
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
Typedesign – Prime Four
hannesfritz
42
2.8k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
21k
Embracing the Ebb and Flow
colly
87
4.8k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
31
2.2k
Done Done
chrislema
185
16k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.6k
Statistics for Hackers
jakevdp
799
220k
KATA
mclloyd
32
14k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
50k
Documentation Writing (for coders)
carmenintech
73
5k
Transcript
Taming Terrain Sculpting geoscapes from LIDAR Andrew Godwin @andrewgodwin
Andrew Godwin / @andrewgodwin Hi, I’m Andrew Godwin • Python
programmer-at-large • Geodata enthusiast • Does not (yet) own LiDAR equipment
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin 1. Data 2. Modelling 3. Fabrication
Andrew Godwin / @andrewgodwin 1. Elevation Data
Andrew Godwin / @andrewgodwin Can be either surface or terrain
(no buildings/plants) Digital Elevation Model
Andrew Godwin / @andrewgodwin Source: maps-for-free.com
Andrew Godwin / @andrewgodwin Hawai'i (ASTER GDEM)
Andrew Godwin / @andrewgodwin Radar
Andrew Godwin / @andrewgodwin Low resolution Needs large-ish antennas Long
distance
Andrew Godwin / @andrewgodwin LiDAR
Andrew Godwin / @andrewgodwin Light Detection And Ranging
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin Very high resolution (cm range) Compact
devices (planes or vehicles) Short distances
Andrew Godwin / @andrewgodwin Free data in both point clouds
and DEMs! e.g. Environment Agency, USGIS
Andrew Godwin / @andrewgodwin data.gov.uk earthexplorer.usgs.gov
Andrew Godwin / @andrewgodwin 2. Processing
Andrew Godwin / @andrewgodwin "Point Cloud"
Andrew Godwin / @andrewgodwin Multiple returns Too much detail Noisy
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin a. "Thin" point cloud b. Rasterise
point cloud to DEM c. Smooth results
Andrew Godwin / @andrewgodwin 3. Fabrication
Andrew Godwin / @andrewgodwin 3D Printing Laser Cutting Milling
Andrew Godwin / @andrewgodwin 3D Printing
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin 4 - 12 unattended hours (per
15cm tile) Difficult to line up perfectly Has to print perfectly square!
Andrew Godwin / @andrewgodwin Milling
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin 2 - 4 attended hours per
10cm piece Small features hard to mill CNC mills ain't cheap
Andrew Godwin / @andrewgodwin Laser Cutting
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin
Andrew Godwin / @andrewgodwin 15 minutes to cut, 15 mins
to glue Only works for features surrounded by flat Limited detail
Andrew Godwin / @andrewgodwin What's next?
Andrew Godwin / @andrewgodwin Less human-intensive milling Better laser cut
feature highlighting 3D directly from point clouds Somehow getting a LiDAR scanner?!
Andrew Godwin / @andrewgodwin code: github.com/andrewgodwin/lidartile blog: aeracode.org videos: youtube.com/user/andrewgodwin
Thanks. Andrew Godwin @andrewgodwin aeracode.org