1
How Deep Learning and Drones Can
Save the World from Asteroids?
@SravanthiSinha
Are asteroids a threat to the Earth?
@SravanthiSinha
4
What’s an Asteroid?
Credit: NASA, JAXA and ESA (montage by Emily
Lakdawalla)
5
Impact of Itokawa
@SravanthiSinha
Where do they live?
7
What's the solution and why find meteorites?
@SravanthiSinha
8
Composition affects
threat assessment and
deflection technologies
Why find meteorites?
@SravanthiSinha
- It takes 100 man hours to find
one meteorite
- To increase meteorite finds, the
efficiency must be increased
- We have trajectories, but finding
meteorites is difficult
9
Current approach to find meteorites
@SravanthiSinha
Use a drone combined with Deep learning to
increase fresh meteorite finds
10 @SravanthiSinha
11
Why Deep Learning is the best
solution?
@SravanthiSinha
12
Traditional Computer Vision - Anomaly Detection
@SravanthiSinha
13
Data-Set
@SravanthiSinha
14
2 wrong classifications
out of 17000 patches!
Our Deep Learning Solution
@SravanthiSinha
15
2 correctly labelled meteorites…
124 incorrectly labelled patches…
out of 17000 patches
Our Deep Learning Solution
@SravanthiSinha
16
Challenges
@SravanthiSinha
Unbalanced data!
17
Dataset Creation
18
How we solved the problem?
@SravanthiSinha
rotations
19
reflection resolution brightness saturation
Our meteorite pictures
320
Internet meteorites in field
280
Internet meteorites photoshopped
35
635 images... tiny dataset !
32 augmentations per image 21000 images... respectable dataset !
Dataset Augmentation
@SravanthiSinha
20
~15 million natural images
Leveraging Big Data
@SravanthiSinha
21
GoogLeNet AlexNet
~6 million parameters ~61 million parameters
Leveraging Pre-trained Networks
@SravanthiSinha
22
Model Ensembling
@SravanthiSinha
23
Hardware / Software
Each model ~2 hours to train
On a CPU it would be ~1 week !
@SravanthiSinha
24
DEMO
@SravanthiSinha
25
The ADELIE Meteorite Hunter
26
The ADELIE Meteorite Hunter
27
The ADELIE Meteorite Hunter
Functionality in place
28
The ADELIE Meteorite Hunter
29
The ADELIE Meteorite Hunter
30
The ADELIE Meteorite Hunter
31
The ADELIE Meteorite Hunter
32
The ADELIE Meteorite Hunter
33
The ADELIE Meteorite Hunter
34
The ADELIE Meteorite Hunter
35
The ADELIE Meteorite Hunter
Archive images for
future learning.
36
The ADELIE Meteorite Hunter
37
The ADELIE Meteorite Hunter
38
The ADELIE Meteorite Hunter
Image processing
○ Faster inference time
○ Weak classifier
○ Reduce false positives
Improved hardware
○ Autonomous height control (LIDAR)
○ Better camera resolution
○ Longer battery life
○ Additional sensors (IR, hyperspectral?, etc.)
39 @SravanthiSinha
Ongoing work..
Amar Shah - Data Scientist,
PhD Student, Cambridge
Robert Citron - Planetary
Scientist, PhD Student, UC
Berkeley
Christopher Watkins, Data
Scientist, PhD Student,
CSIRO, Melbourne
Sravanthi Sinha, Full-Stack
Software Developer, Holberton
School, San Francisco
Peter Jenniskens, Project
Mentor, Meteor Astronomer,
SETI Institute
40
Team
@SravanthiSinha

DEEP LEARNING SUMMIT ASIA 2016

Editor's Notes

  • #4 This has already happened at least once. The likely reason you don’t see any dinosaurs around the neighborhood.
  • #5 ITOKAVA EFFECT
  • #6 ITOKAVA EFFECT
  • #8  How to deflect an Asteroid?
  • #10 Out of 800 trajectories, we only have 27 recovered meteorites . We need to increase that > 40 meteorite types > 100 asteroid families Within each family, there’s a range of properties Can Deep learning improve our ability to locate freshly fallen meteorites?
  • #11 OUR IDEA/APPROACH
  • #40 WORK IN PROGRESS
  • #41 Acknowledgement to the team involved